ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–1 ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) PRECAUTION NOTICE: For initialization: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected. System Name Power Window Control System See procedure IN-32 For hybrid system activation: • When the warning light is illuminated or the battery has been disconnected and reconnected, pressing the power switch may not start the system on the first try. If so, press the power switch again. • If the power switch is ON (IG), the battery is disconnected, and the key is not in the key slot or not within the key detection area during reconnection, DTC B2799 (see page EI-25) may be output. EI EI–2 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) PARTS LOCATION COMBINATION METER EI SECURITY INDICATOR LIGHT NETWORK GATEWAY ECU CERTIFICATION ECU POWER SOURCE CONTROL ECU HYBRID VEHICLE CONTROL ECU TRANSPONDER KEY ECU KEY SLOT TRANSMISSION CONTROL ECU ROOM OSCILLATOR DOOR CONTROL RECEIVER B126441E02 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–3 SYSTEM DIAGRAM Key (Door Control Transmitter) Door Control Receiver Certification ECU EI Room Oscillator BEAN Main Body ECU Security Indicator Light Network Gateway ECU Transmission Control ECU CAN Power Source Control ECU Hybrid Vehicle Control ECU Transponder Key Amplifier Key Slot Coil BEAN LIN Transponder Key ECU Unlock Warning Switch Halfway Switch Full Switch B126008E03 EI–4 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) SYSTEM DESCRIPTION 1. EI 2. Components ENGINE IMMOBILISER SYSTEM DESCRIPTION (a) The immobiliser system is a theft deterrent system that determines whether or not to disable starting of the hybrid control system depending on a comparison of the key's ID code and the vehicle's pre-registered code. The immobiliser system compares the vehicle transponder key ECU's pre-registered ID code with the key-embedded transponder chip's ID code. If the ID codes do not match, the immobiliser system activates and the hybrid control system cannot be started. The transponder key ECU manages communication with the hybrid vehicle control ECU and power source control ECU. When the ID codes of the transponder chip and transponder key ECU match, the transponder key ECU authorizes the starting of the hybrid control system. FUNCTION OF MAIN COMPONENTS Outline Transponder key coil/amplifier Receives key ID code, amplifies ID code and outputs it to transponder key ECU. Key ID code is received when key is inserted into key slot. Halfway switch (inside key slot) Detects if key is/is not inserted into key slot and outputs results to transponder key ECU Full switch (inside key slot) Detects if key is/is not inserted into key slot and outputs results to power source control ECU Room oscillator Transmits key detection signals within detection area in vehicle interior upon receiving transmission request signal from certification ECU. Entry key ECU request signal is activated when key is brought into vehicle interior and, without inserting key into key slot, power switch is pushed. Door control receiver Transmits ID code to certification ECU. Key ID code is received when key is brought into vehicle interior and, without inserting key into key slot, power switch is pushed Security indicator light Illuminates or starts flashing. Illumination is controlled by body ECU 3. SYSTEM FUNCTION (a) Starting hybrid control system with key inserted into the key slot: When the transponder key ECU detects that the halfway switch is ON, the ECU provides current to the transponder key coil and produces a faint electric wave. A transponder chip in the key receives the faint electric wave. Upon receiving the faint electric wave, the transponder chip outputs a key ID code signal. The transponder key coil receives this signal, the transponder key amplifier amplifies it, and then the signal is transmitted to the transponder key ECU. The transponder key ECU matches the key's ID code with the vehicle's ID code, which was previously registered in the ECU. If the ID codes match, the transponder key ECU turns off the security indicator. Then when the power switch is pushed, the code match results are sent through the transponder key ECU to the power ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–5 source control ECU, which authorizes the transition of the power switch's power modes. The ACC, IG1 and IG2 relays are turned ON, supplying power to the power switch ON (ACC) and ON (IG) power modes. Also, the power source control ECU changes the power switch's indicator to amber, informing the driver that the power mode is set to ON (IG). Then, the power source control ECU sends a system start signal to the hybrid vehicle control ECU. The hybrid vehicle control ECU confirms that the key ID code has been verified. If the ID code has been verified, the hybrid vehicle control ECU bypasses the immobiliser system and starts the hybrid control system. (b) Starting hybrid control system without inserting the key into key slot: If a user operates the power switch while the key is in the user's possession, the certification ECU outputs a request signal to the room oscillator. The room oscillator emits signals in order to form a key detection area in the vehicle interior. The key then sends its ID code signal to the certification ECU via the door control receiver. The certification ECU matches the key's ID code with the vehicle's ID code, which was previously registered in the transponder key ECU. If the ID codes match, the transponder key ECU turns off the security indicator. Then when the power switch is pushed, the code match results are sent through the transponder key ECU to the power source control ECU, which authorizes the transition of the power switch's power modes. The ACC, IG1 and IG2 relays are turned ON, supplying power to the power switch ON (ACC) and ON (IG) power modes. Also, the power source control ECU changes the power switch's indicator to amber, informing the driver that the power mode is set to ON (IG). Then, the power source control ECU sends a system start signal to the hybrid vehicle control ECU. The hybrid vehicle control ECU confirms that the key ID code has been verified. If the ID code has been verified, the hybrid vehicle control ECU bypasses the immobiliser system and starts the hybrid control system. EI EI–6 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) HOW TO PROCEED WITH TROUBLESHOOTING HINT: • Use these procedures to troubleshoot the engine immobiliser system. • *: Use the intelligent tester. 1 EI VEHICLE BROUGHT TO WORKSHOP NEXT 2 INSPECT BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding NEXT 3 START HYBRID CONTROL SYSTEM Result Result Proceed to Power switch cannot be turned ON (ACC) or when hybrid control system can be started A Power switch can be turned ON (ACC) and hybrid control system cannot be started B B Go to HYBRID CONTROL SYSTEM A 4 CHECK FOR DTC* (a) Check for DTCs and note any codes that are output (see page EI-24). (b) Delete the DTC. (c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests. Result: Result DTC reoccurs A DTC does not reoccur B B A Proceed to Go to step 7 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) 5 EI–7 PROBLEM SYMPTOMS TABLE Result: Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B Go to step 7 A 6 OVERALL ANALYSIS AND TROUBLESHOOTING* (a) DATA LIST/ACTIVE TEST (see page EI-24) (b) Terminals of ECU (see page EI-18) NEXT 7 ADJUST, REPAIR OR REPLACE NEXT 8 NEXT END CONFIRMATION TEST EI EI–8 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) REGISTRATION 1. DESCRIPTION OF CODE REGISTRATION HINT: • The key code (immobiliser code) is needed when the transponder key ECU, hybrid vehicle control ECU, certification ECU or key is replaced with a new one. • The key has 3 codes: the key code, the entry code and the wireless code. All of these code types need to be registered when the key is replaced a with new one. Refer to the following key code registration procedures and the entry and wireless code registration procedures (see page DL-142). 2. PART REPLACEMENT AND KEY REGISTRATION PROCEDURES (a) The following table shows ECU replacement and key registration procedures in case the malfunctioning ECU has been determined after troubleshooting the engine immobiliser system. HINT: • The following procedures indicated in the table below require the use of the intelligent tester: - New key code registration - Additional key code registration - Key code erasure - ECU code registration • If all of the registered keys are not available, replacement of the transponder key ECU is also required. EI Part to be replaced Procedure Refer to 1. Replace transponder key ECU 2. Reregister all keys Transponder key ECU 3. Using SST (09843-018040), connect terminals TC and CG of DLC3 4. Turn power switch ON (IG) and leave it as is for 30 minutes Certification ECU Hybrid vehicle control ECU "KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)" "ECU CODE REGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU)" 5. Register ECU communication ID to be used between certification ECU and transponder key ECU "ECU CODE REGISTRATION (TRANSPONDER KEY ECU CERTIFICATION ECU)" 1. Replace certification ECU - 2. Register ECU communication ID to be used between certification ECU and transponder key ECU "ECU CODE REGISTRATION (TRANSPONDER KEY ECU CERTIFICATION ECU)" 1. Replace ECM Refer to replacement (see page ES-469) 2. Using SST (09843-018040), connect terminals TC and CG of DLC3 3. Turn power switch ON (IG) and leave it as is for 30 minutes Key - "ECU CODE REREGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU)" 1. Using remaining key, erase key code of lost key "ERASURE OF KEY CODE" 2. Register additional keys as necessary "REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION)" ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) 3. EI–9 KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION) (a) When a key is inserted into the key slot, the key code (immobiliser code) registration is automatic. In this mode, a maximum of 2 key codes can be registered. HINT: • When a new transponder key ECU is installed, key codes (immobiliser codes) must be registered in the transponder key ECU. • New transponder key ECU are automatically set to automatic key code registration mode. EI EI–10 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) Security Indicator Light Blinking (Until first key is inserted) START EI Insert key into key slot ON Registration begins (Registration is completed approx. 1 second after key is inserted) OFF (Approx. 1 second) Remove key ON (When maximum number of key codes are registered, security indicator light remains off until last key registered is removed. After it is removed, security indicator light starts blinking) Yes Register another key? No END B113366E05 (b) End automatic key code registration mode. Automatic key code registration mode can be forced to end when at least 1 key code (immobiliser code) for the key has been registered. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–11 (1) Turn the power switch from ON (IG) and OFF 5 times within 10 seconds using the already registered key. HINT: • When no key is inserted into the key slot in automatic key code registration mode, the security indicator light remains on. • When the immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously. • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator light. Trying to reregister an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator light. The output details are shown below. EI EI–12 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) 0.2 sec. Normal (Immobiliser system is operating normally) ON OFF 1.8 sec. EI 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-1 OFF 0.25 sec. 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-2 OFF 0.25 sec. 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-3 OFF 0.25 sec. B113367E01 4. REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION) (a) Register an additional key using the intelligent tester. HINT: • A maximum of 5 key codes can be registered. • Registration mode will be ended if each step is not completed within the specified time. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–13 Security Indicator Light START Blinking (Until first key is inserted) Insert already registered key into key slot and turn power switch ON (IG) EI Intelligent tester operation: 1. Select PRIUS from menu 2. Select W/ SMART KEY OFF Within 120 seconds 3. Select IMMOBILISER 4. Select ID UTILITY 5. Select TRANSP CODE REG. After above operation, proceed to next step according to prompts on tester screen Within 20 seconds after tester instruction After turning power switch OFF, remove key ON Insert key to be registered in key slot Blinking Within 10 seconds After 60 seconds, key is registered. (Security indicator light turns off) OFF END B113368E08 HINT: • A brief outline of procedures for key code registration is shown above. For more detailed information, refer to the intelligent tester screen's instructions. EI–14 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) • When the immobiliser system is operating normally and key is pulled out, the security indicator light blinks continuously. • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator light. Trying to reregister an already registered key will be cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator light. The output details are shown in the "KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)" procedures. EI 5. ERASURE OF KEY CODE (a) Erase the key codes using the intelligent tester. HINT: • All key codes are erased except for the key that is used to erase the key codes. In order to use a key whose code has been erased, a new key code must be registered. • Registration will be canceled if each step is not completed within the specified time. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–15 Security Indicator Light START Blinking (Until first key is inserted) EI Insert already registered key into key slot and turn power switch ON (IG) Intelligent tester operation: 1. Select PRIUS from menu 2. Select W/ SMART KEY OFF Within 120 seconds 3. Select IMMOBILISER 4. Select ID UTILITY 5. Select IMMOB CODE ERS After above operation, proceed to next step according to prompts on tester screen ON for 1 second then OFF Within 10 seconds after tester instruction After turning power switch OFF, remove key Blinking END B113369E05 HINT: • A brief outline of procedures for the key code erasure is shown above. For more detailed information, refer to the intelligent tester screen's instructions. EI–16 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) • When the immobiliser system is operating normally and key is pulled out, the security indicator light blinks continuously. 6. EI ECU COMMUNICATION ID REGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) NOTICE: • If the transponder key ECU and/or hybrid vehicle control ECU has been replaced, register the ECU communication ID to both ECUs in order to match their IDs. • The hybrid control system cannot be started unless the ECU communication ID matches. • When the transponder key ECU has been replaced, do not turn the power switch from ON to OFF 20 times or more consecutively. The ECU communication ID must be registered before such an occurrence or the transponder key ECU will need to be replaced. If the transponder key ECU is unable to be recognize the hybrid vehicle control ECU, the hybrid control system will be unable to be started. If the transponder key ECU cannot recognize the hybrid vehicle control ECU, the transponder key ECU must be replaced again with a new one. • After the registration, pressing the power switch may not start the system on the first try. If so, press the poser switch again. • After the hybrid control system is started, erase DTC B2799 (code for hybrid vehicle control ECU's immobiliser communication error) using either of the following: - Using the intelligent tester (see page EI-24). - Disconnect the battery for 30 seconds. (a) Register the ECU communication ID. (b) Using SST, connect terminals TC and CG of the DLC3. SST 09843-18040 CG 1 2 3 4 5 6 7 8 9 10111213141516 DLC3 TC SST B135493E01 (c) Turn the power switch ON (IG) (do not start the hybrid control system) and leave it as is for 30 minutes. (d) Turn the power switch OFF and disconnect terminals TC and CG. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–17 (e) Check that the hybrid control system starts. 7. ECU COMMUNICATION ID REGISTRATION (TRANSPONDER KEY ECU - CERTIFICATION ECU) Security Indicator Light EI START Blinking (Until first key is inserted) Insert already registered key into key slot and turn power switch ON (IG) Intelligent tester operation: 1. Select PRIUS from menu 2. Select W/ SMART KEY OFF Within 120 seconds 2. Select IMMOBILISER 3. Select ID UTILITY 4. Select ECU COMM ID REG After above operation, proceed to next step according to prompts on tester screen ON for 1 second then OFF Within 10 seconds after tester instruction After turning power switch OFF, remove key Blinking END B113369E06 EI–18 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) HINT: • A brief outline of procedures for key code registration is shown above. For more detailed information, refer to the intelligent tester screen's instructions. • When the engine immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously. 8. EI ECU COMMUNICATION ID REREGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) NOTICE: • The ECU communication ID should be registered when the hybrid vehicle control ECU is replaced in order to match the ECU communication ID (transponder key ECU - hybrid vehicle control ECU). • The hybrid control system cannot be started unless the ECU communication ID (transponder key ECU - hybrid vehicle control ECU) matches. (a) Insert the already registered key in the key slot and turn the power switch ON (READY) with the brake pedal depressed. (b) Check that the hybrid control system stays on for more than 3 seconds. EI–19 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) PROBLEM SYMPTOMS TABLE HINT: • Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary. • Inspect the fuses and relays related to this system before inspecting the suspected areas below. Engine immobiliser system Symptom Hybrid control system does not start Suspected area See page 1. Power source circuit EI-47 2. Hybrid control system HV-21 EI EI–20 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) TERMINALS OF ECU 1. CHECK KEY SLOT K3 7 6 5 4 3 2 1 EI B126055E01 (a) Disconnect the K3 key slot connector. (b) Measure the resistance of the wire harness side connector. Symbols (Terminal No.) GND (K3-7) - Body ground Wiring Color P - Body ground Terminal Description Ground Condition Specified Condition Below 1 Ω Always If the result is not as specified, there may be a malfunction on the wire harness side. (c) Reconnect the K3 key slot connector. (d) Measure the resistance and voltage of the connector. Symbols (Terminal No.) Wiring Color Terminal Description GND (K3-7) - Body ground P - Body ground Ground VC5 (K3-1) - GND (K3-7) Y-P Power source CODE (K3-4) - GND (K37) L-P Demodulated signal of key code data TXCT (K3-5) - GND (K3-7) LG - P Condition Key code output signal Specified Condition Below 1 Ω Always No key in key slot Below 1 V Key inserted 4.6 to 5.4 V No key in key slot Below 1 V Key inserted Pulse generation (see waveform 1) No key in key slot Below 1 V Key inserted Pulse generation (see waveform 2) If the result is not as specified, the key slot (amplifier) may have a malfunction. (e) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item Symbols (Terminal No.) GND B135496E01 Content CODE (K3-4) - GND (K3-7) Tool Setting 2 V/DIV., 20 msec./DIV. Condition Key inserted EI–21 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) (f) Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Waveform 2 Item Content Symbols (Terminal No.) GND TXCT (K3-5) - GND (K3-7) Tool Setting 2 V/DIV., 10 msec./DIV. Condition Key inserted 2. CHECK TRANSPONDER KEY ECU EI B135497E01 T5 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 B126056E01 (a) Disconnect the T5 ECU connector. (b) Measure the resistance and voltage of the wire harness side connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (T5-22) - Body ground W-B - Body ground Ground Always Below 1 Ω AGND (T5-7) - GND (T522) P - W-B Ground Always Below 1 Ω CPUB (T5-3) - GND (T522) L - W-B +B (CPUB) power supply Always 10 to 14 V IG (T5-4) - GND (T5-22) O - W-B Ignition power supply Power switch OFF Blow 1 V CUWS (T5-5) - GND (T522) B - W-B Halfway switch signal Power switch ON (IG) 10 to 14 V No key in key slot Below 1 Ω Key inserted 10 kΩ or higher If the result is not as specified, there may be a malfunction on the wire harness side. (c) Reconnect the T5 ECU connector. (d) Measure the voltage of the connector. Symbols (Terminal No.) CUWS (T5-5) - GND (T522) VC5 (T5-20) - GND (T522) Wiring Color B - W-B Y - W-B Terminal Description Halfway switch signal Key slot power source Condition No key in key slot Specified Condition 10 to 14 V Key inserted Below 1 V No key in key slot Below 1 V Key inserted 4.6 to 5.4 V EI–22 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) Symbols (Terminal No.) CODE (T5-21) - GND (T522) Wiring Color Terminal Description L - W-B Transponder key amplifier communication signal EI TXCT (T5-6) - GND (T522) LG - P HEV0 (T5-19) - GND (T522) W - W-B Hybrid vehicle control ECU output signal HEV1 (T5-18) - GND (T522) R - W-B Hybrid vehicle control ECU input signal Condition Specified Condition No key in key slot Below 1 V Key inserted Pulse generation (see waveform 1) No key in key slot Below 1 V Key inserted Pulse generation (see waveform 2) Power switch OFF Below 1 V Power switch ON (IG) Pulse generation (see waveform 3) Always Pulse generation (see waveform 4) If the result is not as specified, the ECU may have a malfunction. (e) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item Content Symbols (Terminal No.) CODE (T5-21) - GND (T5-22) Tool Setting 2 V/DIV., 20 msec./DIV. Condition Key inserted GND B135496E01 (f) Waveform 2 Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Item GND B135497E01 Content Symbols (Terminal No.) TXCT (T5-6) - GND (T5-22) Tool Setting 2 V/DIV., 10 msec./DIV. Condition Key inserted EI–23 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) (g) Using an oscilloscope, check the waveform 3. Waveform 3 (Reference): Waveform 3 Item Content Symbols (Terminal No.) GND HEV0 (T5-19) - GND (T5-22) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Power switch ON (IG) EI B135498E01 (h) Using an oscilloscope, check the waveform 4. Waveform 4 (Reference): Waveform 4 Item GND Content Symbols (Terminal No.) HEV1 (T5-18) - GND (T5-22) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Always 3. CHECK CERTIFICATION ECU B135499E01 S11 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 B126057E01 (a) Disconnect the S11 ECU connector. (b) Measure the resistance and voltage of the wire harness side connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (S11-17) - Body ground W-B - Body ground Ground Always Below 1 Ω +B1 (S11-1) - E (S11-17) R - W-B Battery power supply Always 10 to 14 V KSW (S11-4) - E (S11-17) Y - W-B Halfway switch signal IG (S11-18) - E (S11-17) B - W-B Ignition switch supply No key in key slot 10 kΩ or higher Key inserted Below 1 Ω Power switch OFF Below 1 V Power switch ON (IG) 10 to 14 V EI–24 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) If the result is not as specified, there may be a malfunction on the wire harness side. CHECK HYBRID VEHICLE CONTROL ECU 4. H17 EI 7 6 5 4 H16 3 2 1 7 6 5 4 H14 H15 3 2 1 6 5 4 3 2 1 7 6 5 4 3 2 1 17 16 15 14 13 12 11 19 9 8 19 18 17 16 15 14 13 12 11 10 9 8 16 15 14 13 12 11 10 9 8 7 27 26 25 24 23 22 21 20 19 18 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 19 18 17 25 24 23 22 21 20 19 18 34 33 35 34 33 32 31 30 29 28 35 34 33 32 31 31 30 29 28 32 31 30 29 28 30 29 28 17 16 15 14 13 12 11 10 9 8 27 26 B126058E01 (a) Measure the resistance and voltage of the connectors. Symbols (Terminal No.) GND1 (H14-1) - Body ground Wiring Color Terminal Description Condition Specified Condition Below 1 Ω W-B - Body ground Ground Always ST2 (H14-5) - GND1 (H14-1) Y - W-B Ignition ready control signal input Hybrid control system stopped and power switch ON (READY) IGSW (H14-7) - GND1 (H14-1) O - W-B Ignition start control signal input Hybrid control system stopped and power switch ON (IG) BATT (H15-6) - GND1 (H14-1) Y - W-B Battery Always L - W-B Ignition power supply Power switch ON (IG) IMI (H14-18) - GND2 (H14-4) W - W-B Transponder key ECU input signal Always Pulse generation (see waveform 1) IMO (H14-26) - GND2 (H14-4) Transponder key ECU output signal Power switch OFF Below 1 V R - W-B Power switch ON (IG) Pulse generation (see waveform 2) GND 2 (H14-4) - Body ground +B1 (H16-7) - GND1 (H14-1) +B2 (H16-6) - GND1 (H14-1) 10 to 14 V If the result is not as specified, the ECM may have a malfunction. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–25 (b) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item Symbols (Terminal No.) GND Content IMI (H14-18) - GND2 (H14-4) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Always EI B135499E02 (c) Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Waveform 2 Item GND B135498E02 Content Symbols (Terminal No.) IMO (H14-26) - GND2 (H14-4) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Power switch ON (IG) EI–26 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DIAGNOSIS SYSTEM EI 1. DESCRIPTION (a) The hybrid vehicle control ECU controls vehicle's immobiliser system function. Immobiliser system data and the Diagnostic Trouble Codes (DTCs) can be read through the vehicle's Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the immobiliser system even though the security indicator light is off. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs. 2. CHECK DLC3 (a) The vehicle uses the ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. CG SG CANH SIL CANL BAT H100769E16 Symbols (Terminal No.) Terminal Description SIL (7) - SG (5) Bus "+" line CG (4) - Body ground Chassis ground SG (5) - Body ground Signal ground BAT (16) - Body ground Battery positive Condition During transmission Always Pulse generation Below 1 Ω 11 to 14 V 54 to 69 Ω CANH (6) - CANL (14) CANH (6) - Battery positive HIGH-level CAN bus line CANH (6) - CG (4) 1 kΩ or higher Power switch OFF CANL (14) - Battery positive CANL (14) - CG (4) Specified Condition LOW-level CAN bus line 1 kΩ or higher 1 MΩ or higher 1 MΩ or higher If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the intelligent tester (with CAN VIM) to the DLC3, turn the power switch ON (IG) and attempt to use the tester. If the screen displays the message UNABLE TO CONNECT TO VEHICLE, there is a problem either with the vehicle or with the tester. • If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. • If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual. Intelligent Tester DLC3 CAN VIM B126098E01 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–27 DTC CHECK / CLEAR Intelligent Tester 1. 2. DLC3 CAN VIM B126098E01 CHECK DTC (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Read the DTCs by following the directions on the tester's screen. CLEAR DTC (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Erase the DTCs by following the directions on the tester's screen. EI EI–28 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DATA LIST / ACTIVE TEST 1. EI READ DATA LIST HINT: Using the intelligent tester's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time. (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Read the DATA LIST by following the directions on the tester screen. Transponder key ECU: Item Measurement Item / Display (Range) Normal Condition Diagnostic Note KEY UNLK WRN SW Unlock warning switch signal / ON or OFF ON: Key is in key slot OFF: No key is in key slot - SHIFT POS Shift position P signal / ON or OFF ON: Shift position is P OFF: Shift position is not P - +B Battery voltage / NORMAL or BREAK NORMAL: Battery supply is normal BREAK: Battery supply is malfunctioning - ANTENNA COIL Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - IMMOBILISER Immobiliser system status / SET or UNSET SET: Without key UNSET: Power switch ON (IG) - CHECK (SECURITY) Verification with entry key ECU / NORMAL or ABNORMAL NORMAL: Verified with entry key ECU ABNORMAL: Not verified with entry key ECU - REMIT (START) Hybrid control system starting control / OK or NG OK: Hybrid control system starting is permitted NG: Hybrid control system is not permitted - G-CODE SUPPORT G-code support / SUPPORT or NOT SUP SUPPORT: G-code is supported NOT SUP: G-code is not supported - MASTER KEY Key code signal / NOMATCH or MATCH MATCH: Key code is send NOMATCH: Unmatched key code is sent - REGIST MAS CODE Number of registered key / min.: 0; max.: 5 Number of registered key - 2. PERFORM ACTIVE TEST HINT: Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST. (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–29 (c) Perform the ACTIVE TEST by following the directions on the tester's screen. Transponder key ECU: Item NOT P-POS WARN Test Details Shift p-pos warning is ON / OFF Diagnostic Note - METER CHIME Meter chime is ON / OFF - METER BUZ Meter buzzer is ON / OFF - SECURITY INDC Turn security indicator light ON / OFF - EI EI–30 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DIAGNOSTIC TROUBLE CODE CHART 1. TRANSPONDER KEY ECU DTC CHART Transponder key ECU: DTC No. EI Detection Item Trouble Area See page B2775 Interior Verification Abnormal (To Theft Deterrent ECU) - Transponder key ECU - Certification ECU - Smart key system EI-27 B2784 Antenna Coil Open / Short - Wire harness - Key slot - Transponder key ECU EI-30 B2785 Communication Malfunction between ECUs Connected by LIN - Wire harness - Transponder key ECU - Power source control ECU EI-33 B2793 Transponder Chip Malfunction Key (door control transmitter) EI-35 B2794 Unmatched Encryption Code Key (door control transmitter) EI-36 B2795 Unmatched Key Code Key (door control transmitter) EI-37 B2796 No Communication in Immobiliser System - Key (door control transmitter) - Key slot - Wire harness EI-38 B2797 Communication Malfunction No. 1 - Key (door control transmitter) - Wire harness - Key slot EI-41 B2798 Communication Malfunction No. 2 - Key (door control transmitter) EI-38 2. HYBRID VEHICLE CONTROL ECU DTC CHART Hybrid vehicle control ECU DTC No. Detection Item Trouble Area See page B2799-539 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 B2799-540 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 B2799-541 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 B2799-542 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 B2799-543 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 B2799-544 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-44 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2775 EI–31 Interior Verification Abnormal (To Theft Deterrent ECU) DESCRIPTION This DTC is output when: 1) there is no response from the certification ECU, 2) the ECU communication ID was unable to be registered properly, 3) a communication error occurs between the transponder key ECU and certification ECU. DTC No. DTC Detection Condition When any of following conditions are met: • There is no response from certification ECU • ECU communication ID is unable to be registered properly • Communication error occurs between transponder key ECU and certification ECU B2775 Trouble Area • • • Transponder key ECU Certification ECU Smart key system (for door lock) INSPECTION PROCEDURE 1 CHECK FOR DTC (a) Delete the DTC (see page EI-24). (b) Check for DTCs when turning the power switch ON (IG) without inserting the key into the key slot. Result: Result Proceed to DTC reoccurs A DTC does not reoccur B B NORMAL A 2 CHECK CERTIFICATION ECU (VERIFICATION) (a) Check that the smart indicator on the meter is ON. Result: Result Proceed to Smart indicator is ON A Smart indicator is OFF B B GO TO SMART KEY SYSTEM (for Door lock) A 3 CHECK TRANSPONDER KEY ECU (a) Insert the key into the key slot. (b) Check that the power switch can be turned ON (IG). OK: Power switch can be turned ON (IG). EI EI–32 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) OK Go to step 5 NG 4 CHECK FOR DTC (IMMOBILISER SYSTEM DTC) (a) Check for DTCs and note any codes that are output (see page EI-24). (b) Delete the DTC. (c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests. Result: EI Result Proceed to DTC does not reoccur A DTC reoccurs B NG GO TO DTC CHART OK 5 REREGISTER ECU COMMUNICATION ID CODE (a) Reregister the ECU communication ID code with a transponder key ECU and certification ECU (see page EI-7). (b) Check that the power switch can be turned ON (IG) even if the key is not inserted into the key slot. OK: Power switch can be turned ON (IG) without key in key slot OK NORMAL NG 6 CHECK TRANSPONDER KEY ECU (OPERATION) (a) Temporarily replace the transponder key ECU with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC or IG) and the hybrid control system can be started. Result: Result Proceed to Power switch can be turned ON (ACC and IG) and hybrid control system can be started with/without inserting key into key slot A Power switch cannot be turned ON (ACC and IG) and hybrid control system cannot be started without inserting key into key slot B Power switch cannot be turned (ACC and IG) and hybrid control system cannot be started with inserting key into key slot C B REPLACE CERTIFICATION ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) C EI–33 GO TO SMART KEY SYSTEM A END (TRANSPONDER KEY ECU IS DEFECTIVE) EI EI–34 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2784 Antenna Coil Open / Short DESCRIPTION This DTC is detected when a transponder key coil (antenna coil) is open/shorted. DTC No. DTC Detection Condition B2784 EI Antenna coil is open/shorted Trouble Area • • • Wire harness Key slot Transponder key ECU WIRING DIAGRAM Transponder Key ECU Key Slot Transponder Key Amplifier ANT2 VC5 CODE VC5 CODE Transponder Key Coil TXCT GND ANT1 TXCT AGND B121682E08 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–35 INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT TESTER (TRANSPONDER KEY COIL) (a) Check the DATA LIST for proper functioning of the transponder key coil. Transponder key ECU: Measurement Item / Display (Range) Normal Condition Diagnostic Note Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - Item ANTENNA COIL OK: NORMAL (transponder key coil is normal) appears on screen. OK REPLACE TRANSPONDER KEY ECU NG 2 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU TXCT AGND Tester Connection T5-20 (VC5) - K3-1 (VC5) T5-21 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 6 7 8 9 T5-6 (TXCT) - K3-5 (TXCT) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Specified Condition Below 1 Ω T5-7 (AGND) - K3-7 (GND) VC5 CODE T5-20 (VC5) or K3-1 (VC5) - Body ground T5-21 (CODE) or K3-4 (CODE) - Body ground T5-6 (TXCT) or K3-5 (TXCT) - Body ground Key Slot T5-7 (AGND) or K3-7 (GND) - Body ground NG 1 2 3 4 5 6 7 K3 VC5 GND CODE 10 kΩ or higher TXCT B126099E01 REPAIR OR REPLACE HARNESS AND CONNECTOR EI EI–36 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) OK REPLACE KEY SLOT EI ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2785 EI–37 Communication Malfunction between ECUs Connected by LIN DESCRIPTION This DTC is output if communication between the transponder key ECU and power source control ECU is not possible. DTC No. DTC Detection Condition Communication between transponder key ECU and power source control ECU is not possible B2785 Trouble Area • • • Wire harness Power source control ECU Transponder key ECU EI WIRING DIAGRAM Power Source Control ECU LIN1 Transponder Key ECU LIN1 B126100E01 EI–38 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) INSPECTION PROCEDURE 1 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - POWER SOURCE CONTROL ECU) (a) Reconnect the T5 and P6 ECU connectors. (b) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU Tester Connection EI T5 1 2 3 4 5 6 7 8 9 Specified Condition T5-14 (LIN1) - P6-30 (LIN1) Below 1 Ω T5-14 (LIN1) or P6-30 (LIN1) - Body ground 10 kΩ or higher 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 NG LIN1 REPAIR OR REPLACE HARNESS AND CONNECTOR Power Source Control ECU P6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 LIN1 B126101E01 OK 2 CHECK TRANSPONDER KEY ECU (OPERATION) (a) Temporarily replace the transponder key ECU with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (TRANSPONDER KEY ECU IS DEFECTIVE) REPLACE POWER SOURCE CONTROL ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2793 EI–39 Transponder Chip Malfunction DESCRIPTION This DTC is output when: 1) during key code registration, a key malfunction occurs; or 2) the key code was unable to be registered properly. Follow the inspection procedure below. DTC No. B2793 DTC Detection Condition Transponder chip malfunction Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-24). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-7). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IG) and hybrid control system can be started. NG OK END REPLACE KEY EI–40 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2794 Unmatched Encryption Code DESCRIPTION This DTC is output when a key with an incomplete key code is inserted into the key slot. DTC No. B2794 DTC Detection Condition Key with incomplete key code is inserted Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-24). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-7). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IC) and hybrid control system can be started. NG OK END REPLACE KEY ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2795 EI–41 Unmatched Key Code DESCRIPTION This DTC is output when a key with a key code that has not been registered in the ECU is inserted into the key slot. DTC No. B2795 DTC Detection Condition Key with unregistered code is inserted Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-24). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-7). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IC) and hybrid control system can be started. NG OK END REPLACE KEY EI–42 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2796 No Communication in Immobiliser System DTC B2798 Communication Malfunction No. 2 DESCRIPTION When a key is inserted into the key slot but no communication occurs between the key and transponder key ECU, DTC B2796 is output. When a key is inserted into the key slot but a communication error occurs between the key and transponder key ECU, DTC B2798 is output. DTC No. EI DTC Detection Condition Trouble Area B2796 No communication • • • • Key (door control transmitter) Wire harness Key slot Transponder key ECU B2798 Communication error Key (door control transmitter) WIRING DIAGRAM Transponder Key ECU Key Slot Transponder Key Amplifier ANT2 VC5 CODE VC5 CODE Transponder Key Coil TXCT GND ANT1 TXCT AGND B121682E09 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–43 INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT TESTER (ENGINE IMMOBILISER SYSTEM) (a) Check the DATA LIST for proper functioning of the engine immobiliser system. Transponder key ECU: Item IMMOBILISER Measurement Item / Display (Range) Engine immobiliser system status / SET or UNSET Normal Condition SET: No key is in key slot UNSET: Power switch ON (IG) Diagnostic Note - OK: "UNSET" (power switch ON (IG)) appears on screen. OK REPLACE TRANSPONDER KEY ECU NG 2 CHECK DOOR CONTROL TRANSMITTER (OPERATION) (a) Temporarily replace the door control transmitter with a new or normally functioning one. (b) Check that change the power switch can be turned ON (IG). OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. OK END (DOOR CONTROL TRANSMITTER IS DEFECTIVE) NG 3 READ VALUE OF INTELLIGENT TESTER (TRANSPONDER KEY COIL) (a) Check the DATA LIST for proper functioning of the transponder key coil. Transponder key ECU: Item ANTENNA COIL Measurement Item / Display (Range) Normal Condition Diagnostic Note Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - OK: "NORMAL" (transponder key coil is normal) is appears on screen. NG OK REPLACE KEY SLOT EI EI–44 4 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU TXCT Tester Connection T5-20 (VC5) - K3-1 (VC5) AGND EI T5-21 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 Specified Condition 6 7 8 9 T5-6 (TXCT) - K3-5 (TXCT) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Below 1 Ω T5-7 (AGND) - K3-7 (GND) VC5 T5-20 (VC5) or K3-1 (VC5) - Body ground CODE T5-21 (CODE) or K3-4 (CODE) - Body ground T5-6 (TXCT) or K3-5 (TXCT) - Body ground Key Slot T5-7 (AGND) or K3-7 (GND) - Body ground NG 1 2 3 4 5 6 7 K3 VC5 10 kΩ or higher REPAIR OR REPLACE HARNESS AND CONNECTOR GND CODE TXCT B126099E01 OK 5 CHECK KEY SLOT (OPERATION) (a) Temporarily replace the key slot with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (KEY SLOT IS DEFECTIVE) REPLACE TRANSPONDER KEY ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2797 EI–45 Communication Malfunction No. 1 DESCRIPTION This DTC is output when a communication error occurs between the key slot and transponder key ECU. A possible reason for the communication error is that noise is occurring on the communication line. Following the inspection procedure below. DTC No. DTC Detection Condition Key has noise occurring on communication line B2797 Trouble Area • • • • Key (door control transmitter) Wire harness Key slot Transponder key ECU EI WIRING DIAGRAM Key Slot CODE Transponder Key ECU CODE B121683E05 EI–46 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) INSPECTION PROCEDURE 1 CHECK TRANSPONDER KEY ECU (a) Using an oscilloscope or the intelligent tester, check for noise in the waveform between the terminals of the K3 key slot connector and T5 ECU connector. OK: No noise is present (see illustration). Transponder Key ECU EI 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 T5 CODE 7 6 5 4 3 2 1 CODE Noise should not appear. B126102E01 OK Tool Setting T21-15 (CODE) T20-4 (CODE) NG Key Slot K3 Tester Connection 5 V/DIV., 20 msec./DIV. Condition Key inserted Specified Condition No noise is present FIND CAUSE OF NOISE AND REMOVE IT ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) 2 EI–47 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU Tester Connection T21-5 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 6 7 8 9 NG 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Specified Condition Below 1 Ω REPAIR OR REPLACE HARNESS AND CONNECTOR CODE Key Slot K3 1 2 3 4 5 6 7 CODE B126099E02 OK 3 CHECK KEY SLOT (OPERATION) (a) Temporarily replace the key slot with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be turned. NG OK END (KEY SLOT IS DEFECTIVE) REPLACE TRANSPONDER KEY ECU EI EI–48 EI ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) DTC B2799-539 Engine Immobiliser System Malfunction DTC B2799-540 Engine Immobiliser System Malfunction DTC B2799-541 Engine Immobiliser System Malfunction DTC B2799-542 Engine Immobiliser System Malfunction DTC B2799-543 Engine Immobiliser System Malfunction DTC B2799-544 Engine Immobiliser System Malfunction DESCRIPTION These DTCs are detected when: 1) the wire harness between the transponder key ECU and hybrid vehicle control ECU is open or shorted, 2) the ECU communication IDs of the hybrid vehicle control ECU and transponder key ECU are different, 3) the start ON (READY) signal is delayed, or 4) the key codes are unmatched. Before troubleshooting for these DTCs, make sure no transponder key ECU DTCs are present. If present, troubleshoot the transponder key ECU DTCs or hybrid vehicle control ECU DTCs first. DTC No. DTC Detection Condition When any of the following conditions are met: • Wire harness between transponder key ECU and hybrid vehicle control ECU is open or short • ECU communication IDs of hybrid vehicle control ECU and transponder key ECU are different • ON (READY) signal is delayed more than 10 seconds from when power switch is turned to ON (READY) • Key codes are unmatched B2799-539 B2799-540 B2799-541 B2799-542 B2799-543 B2799-544 Trouble Area • • • Wire harness Transponder key ECU Hybrid vehicle control ECU WIRING DIAGRAM Hybrid Vehicle Control ECU Transponder Key ECU IMI HEV0 IMO HEV1 B121684E11 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–49 INSPECTION PROCEDURE 1 CHECK FOR DTC (a) Delete the DTC (see page EI-24). (b) Check that no DTC is output. OK: DTC is not output. OK END EI NG 2 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) (a) Disconnect the T5 and H14 ECU connectors. (b) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Tester Connection Transponder Key ECU T5-19 (HEV0) - H14-18 (IMI) T5-18 (HEV1) - H14-26 (IMO) 1 2 3 4 5 T5 T5-19 (HEV0) or H14-18 (IMI) - Body ground 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 T5-18 (HEV1) or H14-26 (IMO) - Body ground HEV1 Specified Condition Below 1 Ω 10 kΩ or higher HEV0 NG REPAIR OR REPLACE HARNESS AND CONNECTOR Hybrid Vehicle Control ECU H14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 IMI 18 19 20 21 22 23 24 25 26 27 30 31 28 29 IMO B126103E01 OK 3 CHECK TRANSPONDER KEY ECU (OPERATION) (a) Temporarily replace the transponder key ECU with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. EI–50 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (TRANSPONDER KEY ECU IS DEFECTIVE) EI REPLACE HYBRID VEHICLE CONTROL ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) EI–51 Power Source Circuit DESCRIPTION This circuit provides power to operate the transponder key ECU. WIRING DIAGRAM Transponder Key ECU P CON MAIN CPUB P/I AM2 IG2 IGN IG to Power Source Control ECU MAIN GND B126104E02 INSPECTION PROCEDURE 1 CHECK POWER SWITCH (OPERATION) (a) Check that the power switch can be turned. HINT: • Without depressing the brake pedal, push the power switch repeatedly. Power switch should change as following: OFF→ ON (ACC) → ON (IG) → OFF. EI EI–52 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System) • With depressing the brake pedal, push the power switch repeatedly. Power switch should change as following: OFF→ ON (ACC) → ON (IG) → ON (READY) → OFF. NG GO TO SMART KEY SYSTEM (for Starting) OK 2 INSPECT FUSE (IGN, P CON MAIN, AM2) EI (a) Remove the IGN fuse from the instrument panel junction block. (b) Remove the P CON MAIN and AM2 fuses from the engine room junction block. (c) Measure the resistance of the fuses. Standard resistance: Below 1 Ω NG REPLACE FUSE OK 3 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - BATTERY AND BODY GROUND) (a) Disconnect the T5 ECU connector. (b) Measure the resistance and voltage of the wire harness side connector. Standard resistance Wire Harness Side Tester Connection CPUB IG Specified Condition Below 1 Ω T5-22 (GND) - Body ground Standard voltage T5 1 2 3 4 5 6 7 8 9 Tester Connection 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 T5-4 (IG) - Body ground GND T5-3 (CPUB) - Body ground B126105E01 NG Condition Specified Condition Power switch ON (IG) 10 to 14 V Power switch OFF Below 1 V Always 10 to 14 V REPAIR OR REPLACE HARNESS AND CONNECTOR OK PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–49 ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) PRECAUTION NOTICE: For initialization: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected. System Name Power Window Control System See procedure IN-32 For hybrid system activation: • When the warning light is illuminated or the battery has been disconnected and reconnected, pressing the power switch may not start the system on the first try. If so, press the power switch again. • If the power switch is ON (IG), the battery is disconnected, and the key is not in the key slot or not within the key detection area during reconnection, DTC B2799 (see page EI-70) may be output. EI EI–50 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) PARTS LOCATION COMBINATION METER EI SECURITY INDICATOR LIGHT NETWORK GATEWAY ECU POWER SOURCE CONTROL ECU HYBRID VEHICLE CONTROL ECU TRANSPONDER KEY ECU KEY SLOT TRANSMISSION CONTROL ECU B126637E01 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–51 SYSTEM DIAGRAM Key (Door Control Transmitter) EI Main Body ECU Security Indicator Light Network Gateway ECU Transmission Control ECU CAN Power Source Control ECU Hybrid Vehicle Control ECU Key Slot Coil Transponder Key Amplifier BEAN LIN Transponder Key ECU Unlock Warning Switch Halfway Switch Full Switch B126638E03 EI–52 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) SYSTEM DESCRIPTION 1. EI 2. Components ENGINE IMMOBILISER SYSTEM DESCRIPTION (a) The immobiliser system is a theft deterrent system that determines whether or not to disable starting of the hybrid control system depending on a comparison of the key's ID code and the vehicle's pre-registered code. The immobiliser system compares the vehicle transponder key ECU's pre-registered ID code with the key-embedded transponder chip's ID code. If the ID codes do not match, the immobiliser system activates and the hybrid control system cannot be started. The transponder key ECU manages communication with the hybrid vehicle control ECU and power source control ECU. When the ID codes of the transponder chip and transponder key ECU match, the transponder key ECU authorizes the starting of the hybrid control system. FUNCTION OF MAIN COMPONENTS Outline Transponder key coil/amplifier Receives key ID code, amplifies ID code and outputs it to transponder key ECU. Key ID code is received when key is inserted into key slot. Halfway switch (inside key slot) Detects if key is/is not inserted into key slot and outputs results to transponder key ECU Full switch (inside key slot) Detects if key is/is not inserted into key slot and outputs results to power source control ECU Security indicator light Illuminates or starts flashing. Illumination is controlled by body ECU 3. SYSTEM FUNCTION (a) When the transponder key ECU detects that the halfway switch is ON, the ECU provides current to the transponder key coil and produces a faint electric wave. A transponder chip in the key receives the faint electric wave. Upon receiving the faint electric wave, the transponder chip outputs a key ID code signal. The transponder key coil receives this signal, the transponder key amplifier amplifies it, and then the signal is transmitted to the transponder key ECU. The transponder key ECU matches the key's ID code with the vehicle's ID code, which was previously registered in the ECU. If the ID codes match, the transponder key ECU turns off the security indicator. Then when the power switch is pushed, the code match results are sent through the transponder key ECU to the power source control ECU, which authorizes the transition of the power switch's power modes. The ACC, IG1 and IG2 relays are turned ON, supplying power to the power switch ON (ACC) and ON (IG) power ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–53 modes. Also, the power source control ECU changes the power switch's indicator to amber, informing the driver that the power mode is set to ON (IG). Then, the power source control ECU sends a system start signal to the hybrid vehicle control ECU. The hybrid vehicle control ECU confirms that the key ID code has been verified. If the ID code has been verified, the hybrid vehicle control ECU bypasses the immobiliser system and starts the hybrid control system. EI EI–54 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) HOW TO PROCEED WITH TROUBLESHOOTING HINT: • Use these procedures to troubleshoot the engine immobiliser system. • *: Use the intelligent tester. 1 EI VEHICLE BROUGHT TO WORKSHOP NEXT 2 INSPECT BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding NEXT 3 START HYBRID CONTROL SYSTEM Result: Result Proceed to Power switch cannot be turned ON (ACC) or when hybrid control system can be started A Power switch can be turned ON (ACC) and hybrid control system cannot be started B B Go to HYBRID CONTROL SYSTEM A 4 CHECK FOR DTC* (a) Check for DTCs and note any codes that are output (see page EI-69). (b) Delete the DTC. (c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests. Result: Result DTC reoccurs A DTC does not reoccur B B A Proceed to Go to step 7 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) 5 EI–55 PROBLEM SYMPTOMS TABLE Result: Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B Go to step 7 A 6 OVERALL ANALYSIS AND TROUBLESHOOTING* (a) DATA LIST/ACTIVE TEST (see page EI-69) (b) Terminals of ECU (see page EI-63) NEXT 7 ADJUST, REPAIR OR REPLACE NEXT 8 NEXT END CONFIRMATION TEST EI EI–56 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) REGISTRATION 1. DESCRIPTION OF CODE REGISTRATION HINT: • The key code (immobiliser code) is needed when the transponder key ECU, hybrid vehicle control ECU or key is replaced with a new one. • The key has 2 codes: the key code and the wireless code. Both of these code types need to be registered when the key is replaced with a new one. Refer to the following key code registration procedures and the entry and wireless code registration procedures (see page DL-95). 2. PART REPLACEMENT AND KEY REGISTRATION PROCEDURES (a) The following table shows ECU replacement and key registration procedures in case the malfunctioning ECU has been determined after troubleshooting the engine immobiliser system. HINT: • The following procedures indicated in the table below require the use of the intelligent tester: - New key code registration - Additional key code registration - Key code erasure - ECU code registration • If all of the registered keys are not available, replacement of the transponder key ECU is also required. EI Part to be replaced Procedure 1. Replace transponder key ECU 2. Reregister all keys Transponder key ECU 3. Using SST (09843-018040), connect terminals TC and CG of DLC3 4. Turn power switch ON (IG) and leave it as is for 30 minutes 1. Replace ECM Hybrid vehicle control ECU 2. Using SST (09843-018040), connect terminals TC and CG of DLC3 3. Turn power switch ON (IG) and leave it as is for 30 minutes Key Refer to "KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)" "ECU CODE REGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU)" Refer to replacement (see page ES-469) "ECU CODE REREGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU)" 1. Using remaining key, erase key code of lost key "ERASURE OF KEY CODE" 2. Register additional keys as necessary "REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION)" ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) 3. EI–57 KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION) (a) When a key is inserted into the key slot, the key code (immobiliser code) registration is automatic. In this mode, a maximum of 2 key codes can be registered. HINT: • When a new transponder key ECU is installed, key codes (immobiliser codes) must be registered in the transponder key ECU. • New transponder key ECU are automatically set to automatic key code registration mode. EI EI–58 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) Security Indicator Light Blinking (Until first key is inserted) START EI Insert key into key slot ON Registration begins (Registration is completed approx. 1 second after key is inserted) OFF (Approx. 1 second) Remove key ON (When maximum number of key codes are registered, security indicator light remains off until last key registered is removed. After it is removed, security indicator light starts blinking) Yes Register another key? No END B113366E05 (b) End automatic key code registration mode. Automatic key code registration mode can be forced to end when at least 1 key code (immobiliser code) for the key has been registered. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–59 (1) Turn the power switch from ON (IG) and OFF 5 times within 10 seconds using the already registered key. HINT: • When no key is inserted into the key slot in automatic key code registration mode, the security indicator light remains on. • When the immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously. • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator light. Trying to reregister an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator light. The output details are shown below. EI EI–60 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) 0.2 sec. Normal (Immobiliser system is operating normally) ON OFF 1.8 sec. EI 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-1 OFF 0.25 sec. 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-2 OFF 0.25 sec. 0.25 sec. 0.5 sec. 1.0 sec. ON Code 2-3 OFF 0.25 sec. B113367E01 4. REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION) (a) Register an additional key using the intelligent tester. HINT: • A maximum of 5 key codes can be registered. • Registration mode will be ended if each step is not completed within the specified time. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–61 Security Indicator Light START Blinking (Until first key is inserted) Insert already registered key into key slot and turn power switch ON (IG) EI Intelligent tester operation: 1. Select PRIUS from menu 2. Select W/O SMART KEY OFF Within 120 seconds 3. Select IMMOBILISER 4. Select ID UTILITY 5. Select TRANSP CODE REG. After above operation, proceed to next step according to prompts on tester screen Within 20 seconds after tester instruction After turning power switch OFF, remove key ON Insert key to be registered in key slot Blinking Within 10 seconds After 60 seconds, key is registered. (Security indicator light turns off) OFF END B113368E09 HINT: • A brief outline of procedures for key code registration is shown above. For more detailed information, refer to the intelligent tester screen's instructions. EI–62 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) • When the immobiliser system is operating normally and key is pulled out, the security indicator light blinks continuously. • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator light. Trying to reregister an already registered key will be cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator light. The output details are shown in the "KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)" procedures. EI 5. ERASURE OF KEY CODE (a) Erase the key codes using the intelligent tester. HINT: • All key codes are erased except for the key that is used to erase the key codes. In order to use a key whose code has been erased, a new key code must be registered. • Registration will be canceled if each step is not completed within the specified time. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–63 Security Indicator Light START Blinking (Until first key is inserted) EI Insert already registered key into key slot and turn power switch ON (IG) Intelligent tester operation: 1. Select PRIUS from menu 2. Select W/O SMART KEY OFF Within 120 seconds 3. Select IMMOBILISER 4. Select ID UTILITY 5. Select IMMOB CODE ERS After above operation, proceed to next step according to prompts on tester screen ON for 1 second then OFF Within 10 seconds after tester instruction After turning power switch OFF, remove key Blinking END B113369E07 HINT: • A brief outline of procedures for the key code erasure is shown above. For more detailed information, refer to the intelligent tester screen's instructions. EI–64 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) • When the immobiliser system is operating normally and key is pulled out, the security indicator light blinks continuously. 6. EI ECU COMMUNICATION ID REGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) NOTICE: • If the transponder key ECU and/or hybrid vehicle control ECU has been replaced, register the ECU communication ID to both ECUs in order to match their IDs. • The hybrid control system cannot be started unless the ECU communication ID matches. • When the transponder key ECU has been replaced, do not turn the power switch from ON to OFF 20 times or more consecutively. The ECU communication ID must be registered before such an occurrence or the transponder key ECU will need to be replaced. If the transponder key ECU is unable to be recognize the hybrid vehicle control ECU, the hybrid control system will be unable to be started. If the transponder key ECU cannot recognize the hybrid vehicle control ECU, the transponder key ECU must be replaced again with a new one. • After the registration, pressing the power switch may not start the system on the first try. If so, press the poser switch again. • After the hybrid control system is started, erase DTC B2799 (code for hybrid vehicle control ECU's immobiliser communication error) using either of the following: - Using the intelligent tester (see page EI-69). - Disconnect the battery for 30 seconds. (a) Register the ECU communication ID. (b) Using SST, connect terminals TC and CG of the DLC3. SST 09843-18040 CG 1 2 3 4 5 6 7 8 9 10111213141516 DLC3 TC SST B135493E01 (c) Turn the power switch ON (IG) (do not start the hybrid control system) and leave it as is for 30 minutes. (d) Turn the power switch OFF and disconnect terminals TC and CG. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–65 (e) Check that the hybrid control system starts. 7. ECU COMMUNICATION ID REREGISTRATION (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) NOTICE: • The ECU communication ID should be registered when the hybrid vehicle control ECU is replaced in order to match the ECU communication ID (transponder key ECU - hybrid vehicle control ECU). • The hybrid control system cannot be started unless the ECU communication ID (transponder key ECU - hybrid vehicle control ECU) matches. (a) Insert the already registered key in the key slot and turn the power switch ON (READY) with the brake pedal depressed. (b) Check that the hybrid control system stays on for more than 3 seconds. EI EI–66 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) PROBLEM SYMPTOMS TABLE HINT: • Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary. • Inspect the fuses and relays related to this system before inspecting the suspected areas below. EI Engine immobiliser system Symptom Hybrid control system does not start Suspected area See page 1. Power source circuit EI-89 2. Hybrid control system HV-21 EI–67 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) TERMINALS OF ECU 1. CHECK KEY SLOT K3 7 6 5 4 3 2 1 EI B126055E01 (a) Disconnect the K3 key slot connector. (b) Measure the resistance of the wire harness side connector. Symbols (Terminal No.) GND (K3-7) - Body ground Wiring Color P - Body ground Terminal Description Ground Condition Specified Condition Below 1 Ω Always If the result is not as specified, there may be a malfunction on the wire harness side. (c) Reconnect the K3 key slot connector. (d) Measure the resistance and voltage of the connector. Symbols (Terminal No.) Wiring Color Terminal Description GND (K3-7) - Body ground P - Body ground Ground VC5 (K3-1) - GND (K3-7) Y-P Power source CODE (K3-4) - GND (K37) L-P Demodulated signal of key code data TXCT (K3-5) - GND (K3-7) LG - P Key code output signal Condition Specified Condition Always Below 1 Ω No key in key slot Below 1 V Key inserted 4.6 to 5.4 V No key in key slot Below 1 V Key inserted Pulse generation (see waveform 1) No key in key slot Below 1 V Key inserted Pulse generation (see waveform 2) If the result is not as specified, the key slot (amplifier) may have a malfunction. (e) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item Symbols (Terminal No.) GND B135496E01 Content CODE (K3-4) - GND (K3-7) Tool Setting 2 V/DIV., 20 msec./DIV. Condition Key inserted EI–68 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) (f) Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Waveform 2 Item Content Symbols (Terminal No.) GND TXCT (K3-5) - GND (K3-7) Tool Setting 2 V/DIV., 10 msec./DIV. Condition Key inserted 2. CHECK TRANSPONDER KEY ECU EI B135497E01 T5 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 B126056E01 (a) Disconnect the T5 ECU connector. (b) Measure the resistance and voltage of the wire harness side connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (T5-22) - Body ground W-B - Body ground Ground Always Below 1 Ω AGND (T5-7) - GND (T522) P - W-B Ground Always Below 1 Ω CPUB (T5-3) - GND (T522) L - W-B +B (CPUB) power supply Always 10 to 14 V IG (T5-4) - GND (T5-22) O - W-B Ignition power supply Power switch OFF Blow 1 V CUWS (T5-5) - GND (T522) B - W-B Halfway switch signal Power switch ON (IG) 10 to 14 V No key in key slot Below 1 Ω Key inserted 10 kΩ or higher If the result is not as specified, there may be a malfunction on the wire harness side. (c) Reconnect the T5 ECU connector. (d) Measure the voltage of the connector. Symbols (Terminal No.) CUWS (T5-5) - GND (T522) VC5 (T5-20) - GND (T522) Wiring Color B - W-B Y - W-B Terminal Description Halfway switch signal Key slot power source Condition Specified Condition No key in key slot 10 to 14 V Key inserted Below 1 V No key in key slot Below 1 V Key inserted 4.6 to 5.4 V ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) Symbols (Terminal No.) CODE (T5-21) - GND (T522) Wiring Color Terminal Description L - W-B Transponder key amplifier communication signal TXCT (T5-6) - GND (T522) LG - P HEV0 (T5-19) - GND (T522) W - W-B Hybrid vehicle control ECU output signal HEV1 (T5-18) - GND (T522) R - W-B Hybrid vehicle control ECU input signal Condition EI–69 Specified Condition No key in key slot Below 1 V Key inserted Pulse generation (see waveform 1) No key in key slot Below 1 V Key inserted Pulse generation (see waveform 2) Power switch OFF Below 1 V Power switch ON (IG) Pulse generation (see waveform 3) Always Pulse generation (see waveform 4) If the result is not as specified, the ECU may have a malfunction. (e) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item Content Symbols (Terminal No.) CODE (T5-21) - GND (T5-22) Tool Setting 2 V/DIV., 20 msec./DIV. Condition Key inserted GND B135496E01 (f) Waveform 2 Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Item GND B135497E01 Content Symbols (Terminal No.) TXCT (T5-6) - GND (T5-22) Tool Setting 2 V/DIV., 10 msec./DIV. Condition Key inserted EI EI–70 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) (g) Using an oscilloscope, check the waveform 3. Waveform 3 (Reference): Waveform 3 Item Content Symbols (Terminal No.) GND HEV0 (T5-19) - GND (T5-22) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Power switch ON (IG) EI B135498E01 (h) Using an oscilloscope, check the waveform 4. Waveform 4 (Reference): Waveform 4 Item GND Content Symbols (Terminal No.) HEV1 (T5-18) - GND (T5-22) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Always 3. CHECK HYBRID VEHICLE CONTROL ECU B135499E01 H17 7 6 5 4 H16 3 2 1 7 6 5 4 3 H14 H15 2 1 6 5 4 3 2 1 7 6 5 4 3 2 1 17 16 15 14 13 12 11 19 9 8 19 18 17 16 15 14 13 12 11 10 9 8 16 15 14 13 12 11 10 9 8 7 27 26 25 24 23 22 21 20 19 18 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 19 18 17 25 24 23 22 21 20 19 18 34 33 35 34 33 32 31 30 29 28 35 34 33 32 31 31 30 29 28 32 31 30 29 28 30 29 28 17 16 15 14 13 12 11 10 9 8 27 26 B126058E01 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–71 (a) Measure the resistance and voltage of the connectors. Symbols (Terminal No.) GND1 (H14-1) - Body ground Wiring Color Terminal Description Condition Below 1 Ω W-B - Body ground Ground Always ST2 (H14-5) - GND1 (H14-1) Y - W-B Ignition ready control signal input Hybrid control system stopped and power switch ON (READY) IGSW (H14-7) - GND1 (H14-1) O - W-B Ignition start control signal input Hybrid control system stopped and power switch ON (IG) GND 2 (H14-4) - Body ground BATT (H15-6) - GND1 (H14-1) Specified Condition 10 to 14 V Y - W-B Battery Always L - W-B Ignition power supply Power switch ON (IG) IMI (H14-18) - GND2 (H14-4) W - W-B Transponder key ECU input signal Always Pulse generation (see waveform 1) IMO (H14-26) - GND2 (H14-4) Transponder key ECU output signal Power switch OFF Below 1 V R - W-B Power switch ON (IG) Pulse generation (see waveform 2) +B1 (H16-7) - GND1 (H14-1) +B2 (H16-6) - GND1 (H14-1) If the result is not as specified, the ECM may have a malfunction. (b) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference): Waveform 1 Item GND B135499E02 Content Symbols (Terminal No.) IMI (H14-18) - GND2 (H14-4) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Always EI EI–72 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) (c) Using an oscilloscope, check the waveform 2. Waveform 2 (Reference): Waveform 2 Item Symbols (Terminal No.) GND EI B135498E02 Content IMO (H14-26) - GND2 (H14-4) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Power switch ON (IG) ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–73 DIAGNOSIS SYSTEM 1. DESCRIPTION (a) The hybrid vehicle control ECU controls vehicle's immobiliser system function. Immobiliser system data and the Diagnostic Trouble Codes (DTCs) can be read through the vehicle's Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the immobiliser system even though the security indicator light is off. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs. 2. CHECK DLC3 (a) The vehicle uses the ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. CG SG CANH SIL CANL BAT H100769E16 Symbols (Terminal No.) Terminal Description SIL (7) - SG (5) Bus "+" line CG (4) - Body ground Chassis ground SG (5) - Body ground Signal ground BAT (16) - Body ground Battery positive Condition During transmission Always Below 1 Ω 11 to 14 V 54 to 69 Ω CANH (6) - CANL (14) CANH (6) - Battery positive HIGH-level CAN bus line CANH (6) - CG (4) 1 kΩ or higher Power switch OFF CANL (14) - Battery positive CANL (14) - CG (4) Specified Condition Pulse generation LOW-level CAN bus line 1 kΩ or higher 1 MΩ or higher 1 MΩ or higher If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the intelligent tester (with CAN VIM) to the DLC3, turn the power switch ON (IG) and attempt to use the tester. If the screen displays the message UNABLE TO CONNECT TO VEHICLE, there is a problem either with the vehicle or with the tester. • If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. • If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual. Intelligent Tester DLC3 CAN VIM B126098E01 EI EI–74 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC CHECK / CLEAR Intelligent Tester 1. 2. EI DLC3 CAN VIM B126098E01 CHECK DTC (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Read the DTCs by following the directions on the tester's screen. CLEAR DTC (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Erase the DTCs by following the directions on the tester's screen. ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–75 DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the intelligent tester's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time. (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). (c) Read the DATA LIST by following the directions on the tester screen. Transponder key ECU: Item Measurement Item / Display (Range) Normal Condition Diagnostic Note KEY UNLK WRN SW Unlock warning switch signal / ON or OFF ON: Key is in key slot OFF: No key is in key slot - SHIFT POS Shift position P signal / ON or OFF ON: Shift position is P OFF: Shift position is not P - +B Battery voltage / NORMAL or BREAK NORMAL: Battery supply is normal BREAK: Battery supply is malfunctioning - ANTENNA COIL Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - IMMOBILISER Immobiliser system status / SET or UNSET SET: Without key UNSET: Power switch ON (IG) - REMIT (START) Hybrid control system starting control / OK or NG OK: Hybrid control system starting is permitted NG: Hybrid control system is not permitted - G-CODE SUPPORT G-code support / SUPPORT or NOT SUP SUPPORT: G-code is supported NOT SUP: G-code is not supported - MASTER KEY Key code signal / NOMATCH or MATCH MATCH: Key code is send NOMATCH: Unmatched key code is sent - REGIST MAS CODE Number of registered key / min.: 0; max.: 5 Number of registered key - 2. PERFORM ACTIVE TEST HINT: Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST. (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG). EI EI–76 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) (c) Perform the ACTIVE TEST by following the directions on the tester's screen. Transponder key ECU: Item EI Test Details Diagnostic Note NOT P-POS WARN Shift p-pos warning is ON / OFF - METER CHIME Meter chime is ON / OFF - METER BUZ Meter buzzer is ON / OFF - SECURITY INDC Turn security indicator light ON / OFF - ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–77 DIAGNOSTIC TROUBLE CODE CHART 1. TRANSPONDER KEY ECU DTC CHART Transponder key ECU DTC No. Detection Item Trouble Area See page B2784 Antenna Coil Open / Short - Wire harness - Key slot - Transponder key ECU EI-72 B2785 Communication Malfunction between ECUs Connected by LIN - Wire harness - Transponder key ECU - Power source control ECU EI-75 B2793 Transponder Chip Malfunction Key (door control transmitter) EI-77 B2794 Unmatched Encryption Code Key (door control transmitter) EI-78 B2795 Unmatched Key Code Key (door control transmitter) EI-79 B2796 No Communication in Immobiliser System - Key (door control transmitter) - Key slot - Wire harness EI-80 B2797 Communication Malfunction No. 1 - Key (door control transmitter) - Wire harness - Key slot EI-83 B2798 Communication Malfunction No. 2 - Key (door control transmitter) EI-80 2. HYBRID VEHICLE CONTROL ECU DTC CHART Hybrid vehicle control ECU DTC No. Detection Item Trouble Area See page B2799-539 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU B2799-540 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-86 B2799-541 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-86 B2799-542 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-86 B2799-543 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-86 B2799-544 Engine Immobiliser System Malfunction - Wire harness - Transponder key ECU - Hybrid vehicle control ECU EI-86 EI-86 EI EI–78 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2784 Antenna Coil Open / Short DESCRIPTION This DTC is detected when a transponder key coil (antenna coil) is open/shorted. DTC No. DTC Detection Condition B2784 EI Antenna coil is open/shorted Trouble Area • • • Wire harness Key slot Transponder key ECU WIRING DIAGRAM Transponder Key ECU Key Slot Transponder Key Amplifier ANT2 VC5 CODE VC5 CODE Transponder Key Coil TXCT GND ANT1 TXCT AGND B121682E08 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–79 INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT TESTER (TRANSPONDER KEY COIL) (a) Check the DATA LIST for proper functioning of the transponder key coil. Transponder key ECU: Measurement Item / Display (Range) Normal Condition Diagnostic Note Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - Item ANTENNA COIL OK: NORMAL (transponder key coil is normal) appears on screen. OK REPLACE TRANSPONDER KEY ECU NG 2 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU TXCT AGND Tester Connection T5-20 (VC5) - K3-1 (VC5) T5-21 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 6 7 8 9 T5-6 (TXCT) - K3-5 (TXCT) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Specified Condition Below 1 Ω T5-7 (AGND) - K3-7 (GND) VC5 CODE T5-20 (VC5) or K3-1 (VC5) - Body ground T5-21 (CODE) or K3-4 (CODE) - Body ground T5-6 (TXCT) or K3-5 (TXCT) - Body ground Key Slot T5-7 (AGND) or K3-7 (GND) - Body ground NG 1 2 3 4 5 6 7 K3 VC5 GND CODE 10 kΩ or higher TXCT B126099E01 REPAIR OR REPLACE HARNESS AND CONNECTOR EI EI–80 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) OK REPLACE KEY SLOT EI ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2785 EI–81 Communication Malfunction between ECUs Connected by LIN DESCRIPTION This DTC is output if communication between the transponder key ECU and power source control ECU is not possible. DTC No. DTC Detection Condition Communication between transponder key ECU and power source control ECU is not possible B2785 Trouble Area • • • Wire harness Power source control ECU Transponder key ECU EI WIRING DIAGRAM Power Source Control ECU LIN1 Transponder Key ECU LIN1 B126100E01 EI–82 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) INSPECTION PROCEDURE 1 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - POWER SOURCE CONTROL ECU) (a) Reconnect the T5 and P6 ECU connectors. (b) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU Tester Connection EI T5 1 2 3 4 5 6 7 8 9 Specified Condition T5-14 (LIN1) - P6-30 (LIN1) Below 1 Ω T5-14 (LIN1) or P6-30 (LIN1) - Body ground 10 kΩ or higher 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 NG LIN1 REPAIR OR REPLACE HARNESS AND CONNECTOR Power Source Control ECU P6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 LIN1 B126101E01 OK 2 CHECK TRANSPONDER KEY ECU (OPERATION) (a) Temporarily replace the transponder key ECU with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (TRANSPONDER KEY ECU IS DEFECTIVE) REPLACE POWER SOURCE CONTROL ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2793 EI–83 Transponder Chip Malfunction DESCRIPTION This DTC is output when: 1) during key code registration, a key malfunction occurs; or 2) the key code was unable to be registered properly. Follow the inspection procedure below. DTC No. B2793 DTC Detection Condition Transponder chip malfunction Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-69). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-54). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IG) and hybrid control system can be started. NG OK END REPLACE KEY EI–84 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2794 Unmatched Encryption Code DESCRIPTION This DTC is output when a key with an incomplete key code is inserted into the key slot. DTC No. B2794 DTC Detection Condition Key with incomplete key code is inserted Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-69). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-54). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IG) and hybrid control system can be started. NG OK END REPLACE KEY ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2795 EI–85 Unmatched Key Code DESCRIPTION This DTC is output when a key with a key code that has not been registered in the ECU is inserted into the key slot. DTC No. B2795 DTC Detection Condition Key with unregistered code is inserted Trouble Area Key (door control transmitter) INSPECTION PROCEDURE EI 1 REREGISTER KEY (a) Delete the DTC (see page EI-69). (b) Reregister the key (which caused this DTC to be output) with the transponder key ECU (see page EI-54). (c) Insert the same key into the key slot. (d) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned (ACC and IG) and hybrid control system can be started. NG OK END REPLACE KEY EI–86 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2796 No Communication in Immobiliser System DTC B2798 Communication Malfunction No. 2 DESCRIPTION When a key is inserted into the key slot but no communication occurs between the key and transponder key ECU, DTC B2796 is output. When a key is inserted into the key slot but a communication error occurs between the key and transponder key ECU, DTC B2798 is output. DTC No. EI DTC Detection Condition Trouble Area B2796 No communication • • • • Key (door control transmitter) Wire harness Key slot Transponder key ECU B2798 Communication error Key (door control transmitter) WIRING DIAGRAM Transponder Key ECU Key Slot Transponder Key Amplifier ANT2 VC5 CODE VC5 CODE Transponder Key Coil TXCT GND ANT1 TXCT AGND B121682E08 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–87 INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT TESTER (ENGINE IMMOBILISER SYSTEM) (a) Check the DATA LIST for proper functioning of the engine immobiliser system. Transponder key ECU: Item IMMOBILISER Measurement Item / Display (Range) Engine immobiliser system status / SET or UNSET Normal Condition SET: No key is in key slot UNSET: Power switch ON (IG) Diagnostic Note - OK: "UNSET" (power switch ON (IG)) appears on screen. OK REPLACE TRANSPONDER KEY ECU NG 2 CHECK DOOR CONTROL TRANSMITTER (OPERATION) (a) Temporarily replace the door control transmitter with a new or normally functioning one. (b) Check that change the power switch can be turned ON (IG). OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. OK END (DOOR CONTROL TRANSMITTER IS DEFECTIVE) NG 3 READ VALUE OF INTELLIGENT TESTER (TRANSPONDER KEY COIL) (a) Check the DATA LIST for proper functioning of the transponder key coil. Transponder key ECU: Item ANTENNA COIL Measurement Item / Display (Range) Normal Condition Diagnostic Note Transponder key coil condition / NORMAL or FAIL NORMAL: Transponder key coil is normal FAIL: Transponder key coil is malfunctioning - OK: "NORMAL" (transponder key coil is normal) is appears on screen. NG OK REPLACE KEY SLOT EI EI–88 4 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU TXCT Tester Connection T5-20 (VC5) - K3-1 (VC5) AGND EI T5-21 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 Specified Condition 6 7 8 9 T5-6 (TXCT) - K3-5 (TXCT) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Below 1 Ω T5-7 (AGND) - K3-7 (GND) VC5 T5-20 (VC5) or K3-1 (VC5) - Body ground CODE T5-21 (CODE) or K3-4 (CODE) - Body ground T5-6 (TXCT) or K3-5 (TXCT) - Body ground Key Slot T5-7 (AGND) or K3-7 (GND) - Body ground NG 1 2 3 4 5 6 7 K3 VC5 10 kΩ or higher REPAIR OR REPLACE HARNESS AND CONNECTOR GND CODE TXCT B126099E01 OK 5 CHECK KEY SLOT (OPERATION) (a) Temporarily replace the key slot with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (KEY SLOT IS DEFECTIVE) REPLACE TRANSPONDER KEY ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2797 EI–89 Communication Malfunction No. 1 DESCRIPTION This DTC is output when a communication error occurs between the key slot and transponder key ECU. A possible reason for the communication error is that noise is occurring on the communication line. Following the inspection procedure below. DTC No. DTC Detection Condition Key has noise occurring on communication line B2797 Trouble Area • • • • Key (door control transmitter) Wire harness Key slot Transponder key ECU EI WIRING DIAGRAM Key Slot CODE Transponder Key ECU CODE B121683E05 EI–90 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) INSPECTION PROCEDURE 1 CHECK TRANSPONDER KEY ECU (a) Using an oscilloscope or the intelligent tester, check for noise in the waveform between the terminals of the K3 key slot connector and T5 ECU connector. OK: No noise is present (see illustration). Transponder Key ECU EI 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 T5 CODE 7 6 5 4 3 2 1 CODE Noise should not appear. B126102E01 OK Tool Setting T21-15 (CODE) T20-4 (CODE) NG Key Slot K3 Tester Connection 5 V/DIV., 20 msec./DIV. Condition Key inserted Specified Condition No noise is present FIND CAUSE OF NOISE AND REMOVE IT ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) 2 EI–91 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - KEY SLOT) (a) Disconnect the T5 ECU connector. (b) Disconnect the K3 key slot connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Transponder Key ECU Tester Connection T21-5 (CODE) - K3-4 (CODE) T5 1 2 3 4 5 6 7 8 9 NG 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Specified Condition Below 1 Ω REPAIR OR REPLACE HARNESS AND CONNECTOR CODE Key Slot K3 1 2 3 4 5 6 7 CODE B126099E02 OK 3 CHECK KEY SLOT (OPERATION) (a) Temporarily replace the key slot with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be turned. NG OK END (KEY SLOT IS DEFECTIVE) REPLACE TRANSPONDER KEY ECU EI EI–92 EI ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) DTC B2799-539 Engine Immobiliser System Malfunction DTC B2799-540 Engine Immobiliser System Malfunction DTC B2799-541 Engine Immobiliser System Malfunction DTC B2799-542 Engine Immobiliser System Malfunction DTC B2799-543 Engine Immobiliser System Malfunction DTC B2799-544 Engine Immobiliser System Malfunction DESCRIPTION These DTCs are detected when: 1) the wire harness between the transponder key ECU and hybrid vehicle control ECU is open or shorted, 2) the ECU communication IDs of the hybrid vehicle control ECU and transponder key ECU are different, 3) the start ON (READY) signal is delayed, or 4) the key codes are unmatched. Before troubleshooting for these DTCs, make sure no transponder key ECU DTCs are present. If present, troubleshoot the transponder key ECU DTCs or hybrid vehicle control ECU DTCs first. DTC No. DTC Detection Condition When any of the following conditions are met: • Wire harness between transponder key ECU and hybrid vehicle control ECU is open or short • ECU communication IDs of hybrid vehicle control ECU and transponder key ECU are different • ON (READY) signal is delayed more than 10 seconds from when power switch is turned to ON (READY) • Key codes are unmatched B2799-539 B2799-540 B2799-541 B2799-542 B2799-543 B2799-544 Trouble Area • • • Wire harness Transponder key ECU Hybrid vehicle control ECU WIRING DIAGRAM Hybrid Vehicle Control ECU Transponder Key ECU IMI HEV0 IMO HEV1 B121684E08 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–93 INSPECTION PROCEDURE 1 CHECK FOR DTC (a) Delete the DTC (see page EI-69). (b) Check that no DTC is output. OK: DTC is not output. OK END EI NG 2 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - HYBRID VEHICLE CONTROL ECU) (a) Disconnect the T5 and H14 ECU connectors. (b) Measure the resistance of the wire harness side connectors. Standard resistance Wire Harness Side Tester Connection Transponder Key ECU T5-19 (HEV0) - H14-18 (IMI) T5-18 (HEV1) - H14-26 (IMO) 1 2 3 4 5 T5 T5-19 (HEV0) or H14-18 (IMI) - Body ground 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 T5-18 (HEV1) or H14-26 (IMO) - Body ground HEV1 Specified Condition Below 1 Ω 10 kΩ or higher HEV0 NG REPAIR OR REPLACE HARNESS AND CONNECTOR Hybrid Vehicle Control ECU H14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 IMI 18 19 20 21 22 23 24 25 26 27 30 31 28 29 IMO B126103E01 OK 3 CHECK TRANSPONDER KEY ECU (OPERATION) (a) Temporarily replace the transponder key ECU with a new or normally functioning one. (b) Check that the power switch can be turned ON (ACC and IG) and the hybrid control system can be started. EI–94 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) OK: Power switch can be turned ON (ACC and IG) and hybrid control system can be started. NG OK END (TRANSPONDER KEY ECU IS DEFECTIVE) EI REPLACE HYBRID VEHICLE CONTROL ECU ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) EI–95 Power Source Circuit DESCRIPTION This circuit provides power to operate the transponder key ECU. WIRING DIAGRAM Transponder Key ECU P CON MAIN CPUB P/I AM2 IG2 IGN IG to Power Source Control ECU MAIN GND B126104E02 INSPECTION PROCEDURE 1 CHECK POWER SWITCH (OPERATION) (a) Check that the power switch can be turned. HINT: • Without depressing the brake pedal, push the power switch repeatedly. Power switch should change as following: OFF→ ON (ACC) → ON (IG) → OFF. EI EI–96 ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) • With depressing the brake pedal, push the power switch repeatedly. Power switch should change as following: OFF→ ON (ACC) → ON (IG) → ON (READY) → OFF. NG GO TO SMART KEY SYSTEM (for Starting) OK 2 INSPECT FUSE (IGN, P CON MAIN, AM2) EI (a) Remove the IGN fuse from the instrument panel junction block. (b) Remove the P CON MAIN and AM2 fuses from the engine room junction block. (c) Measure the resistance of the fuses. Standard resistance: Below 1 Ω NG REPLACE FUSE OK 3 CHECK WIRE HARNESS (TRANSPONDER KEY ECU - BATTERY AND BODY GROUND) (a) Disconnect the T5 ECU connector. (b) Measure the resistance and voltage of the wire harness side connector. Standard resistance Wire Harness Side Tester Connection CPUB IG Specified Condition Below 1 Ω T5-22 (GND) - Body ground Standard voltage T5 1 2 3 4 5 6 7 8 9 Tester Connection 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 T5-4 (IG) - Body ground GND T5-3 (CPUB) - Body ground B126105E01 NG Condition Specified Condition Power switch ON (IG) 10 to 14 V Power switch OFF Below 1 V Always 10 to 14 V REPAIR OR REPLACE HARNESS AND CONNECTOR OK PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE