TIRE AND WHEEL – TIRE AND WHEEL SYSTEM TW–1 TIRE AND WHEEL SYSTEM PRECAUTION 1. 2. REMOVAL AND INSTALLATION OF THE TIRE PRESSURE MONITOR VALVE SUB-ASSEMBLY (a) When installing a tire, make sure that the tire pressure monitor valve sub-assembly does not interfere with the tire bead. (b) After completing the operation, remove the valve core to rapidly release the air in the tire and check that the warning light comes on. If the warning light does not come on, the system may be defective. (c) If there is an air leakage, tighten the nut to a force of 4.0 N*m (41 kgf*cm, 35 in.*lbf) and push the valve core 2 or 3 times to remove any dirt attached to the valve core. If air continues to leak, replace the grommet, washer and nut. (d) When installing the tire pressure monitor valve, check whether the rim, grommet, washer and nut are clean. Use a manufacturer-specified cap. (e) When putting air into the tire, first install the tire pressure valve straight onto the stem of the tire pressure monitor valve. TIRE AND WHEEL REPLACEMENT OR TIRE ROTATION (a) If replacing a tire, be sure to check the grommet of the tire valve for damage. If necessary, replace the grommet, washer and nut. (b) If tires and wheels are replaced, be sure to register the transmitter ID (see page TW-17). (c) Transmitter IDs of all tires of the vehicle must correspond with IDs registered in ECU. TW TW–2 TIRE AND WHEEL – TIRE AND WHEEL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING 1. Check that the wheel nuts are fully tightened. NG Repair DIAGNOSIS OF TIRE VIBRATION (a) Inspection procedure. NG Inspect bearing looseness. Inspect axle hub runout. OK Repair tire(s). OK OK Return the vehicle to the customer. Check tire pressure. OK Check wheel balance. OK NG Adjustment NG Inspect bearing looseness. Inspect axle hub runout. Adjustment NG Repair NG TW OK Check wheel balance. C107882E07 2. DIAGNOSIS OF IRREGULAR TIRE WEAR (a) Inspection procedure. TIRE AND WHEEL – TIRE AND WHEEL SYSTEM Check tire pressure. OK Check wheel alignment. NG NG Adjustment Adjustment OK TW–3 Rotate or replace the tire(s). NG Check wheel alignment. OK C107883E01 TW TW–4 TIRE AND WHEEL – TIRE AND WHEEL SYSTEM INSPECTION 1. INSPECT TIRE (a) Check the tires for wear and proper inflation pressure. Standard cold tire inflation pressure Tire Size Front Pressure Rear Pressure 185/65R15 86S 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Using a dial indicator, check the tire runout (vertical and horizontal). Standard tire runout: 1.4 mm (0.055 in.) or less C050798E01 Front 2. ROTATE TIRE HINT: Rotate tires as shown in the illustration. 3. INSPECT WHEEL BALANCE (a) Check and adjust the off-the-car balance. (b) If necessary, check and adjust the on-the-car balance. Standard imbalance after adjustment: 8.0 g (0.018 lb) or less 4. INSPECT BEARING BACKLASH (a) Inspect the front bearing backlash (see page AH-4). 5. INSPECT FOR AXLE HUB DEVIATION (a) Inspect for front axle hub deviation (see page AH-4). 6. INSPECT BEARING BACKLASH (a) Inspect the rear bearing backlash (see page AH10). 7. INSPECT FOR AXLE HUB DEVIATION (a) Inspect for rear axle hub deviation (see page AH10). F008740E01 TW C080976E01 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–5 TIRE PRESSURE WARNING SYSTEM PRECAUTION NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected. System Name See procedure Power window control system IN-32 1. Combination Meter Tire Pressure Warning Light F100812E01 TIRE PRESSURE WARNING SYSTEM PRECAUTION (a) When the tire pressure warning light turns on, immediately check the tire pressure of each tire and adjust it to the specified value. When the tire pressure warning light circuit is open, the tire pressure warning light flashes for 1 minute and then illuminates. NOTICE: Check the spare tire as well since this system only monitors the pressure of the 4 vehicle tires. Standard pressure Front Rear 2 240 kPa (2.4 kgf/cm , 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) When the tire pressure warning light blinks, there is a malfunction in the system. Check for DTCs. (c) It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and / or tire pressure warning ECU (see page TW-14). (d) When replacing the tire pressure warning ECU: (1) Using the DATA LIST, read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU. (2) Register the transmitter IDs after installing a new tire pressure warning ECU. TW TW–6 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Transmitter ID C107262E01 2. 3. TW (e) When replacing the tire pressure warning valve and transmitter: (1) Make a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires and wheels on the vehicle. NOTICE: The transmitter ID is written on the tire pressure warning valve and transmitter and it will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, make a note of the transmitter ID before installing the tire pressure warning valve transmitter. IN CASE OF TIRE AND WHEEL REPLACEMENT (a) When tires and wheels are replaced, always be sure to register the transmitter ID correctly. FAIL-SAFE FUNCTION (a) When a system malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks and informs the driver of the system failure. (b) The result of this diagnosis is stored in the tire pressure warning ECU. (c) Precautions about tire pressure: • Tire pressure decreases naturally over time. • In winter, tire pressure may decrease due to low ambient temperature (tire pressure decreases by approximately 10 kPa (0.2 kgf/cm2, 1.45 psi) for every 10°C (50°F) drop in the ambient temperature). Therefore, the tire pressure warning is more likely to operate if the tire pressure are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires high so that the tire pressures are suitable under cold conditions. Incorrect tire pressure warning operation becomes less likely. TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–7 PARTS LOCATION TIRE PRESSURE WARNING VALVE AND TRANSMITTER TIRE PRESSURE WARNING VALVE AND TRANSMITTER TW TIRE PRESSURE WARNING ANTENNA AND RECEIVER F100810E01 TW–8 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DRIVER SIDE JUNCTION BLOCK - IG1 RELAY - ECU-IG FUSE TIRE PRESSURE WARNING ECU DLC3 TW TIRE PRESSURE WARNING RESET SWITCH F100811E03 TW–9 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM SYSTEM DIAGRAM Combination Meter (Tire Pressure Warning Light) Tire Pressure Warning Antenna and Receiver Combination Meter (Vehicle Speed Signal) Tire Pressure Warning Valve and Transmitter (Front LH) Tire Pressure Warning ECU DLC3 Tire Pressure Warning Valve and Transmitter (Front RH) CAN Gateway ECU Tire Pressure Warning Valve and Transmitter (Rear LH) Tire Pressure Warning Valve and Transmitter (Rear RH) TW Tire Pressure Warning Reset Switch Radio Signal ) BEAN Communication Line F100809E03 TW–10 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM SYSTEM DESCRIPTION 1. Tire Pressure Warning Valve and Transmitter DESCRIPTION OF SYSTEM (a) A tire pressure warning valve and transmitter is equipped with a tire pressure sensor and is installed in each tire wheel assembly. The sensor measures the tire pressure. The measured value and transmitter ID are transmitted to the tire pressure warning antenna and receiver on the body as radio waves, and then sent to the tire pressure warning ECU from the tire pressure warning antenna and receiver. If the transmitter ID has already been registered, the ECU compares the measured air pressure value with the standard value. When the value is less than the standard value registered in the tire pressure warning ECU, the warning light on the combination meter turns on. • The tire pressure warning reset switch resets the warning threshold in accordance with the various tire pressure settings that exist due to tire types and installation positions. • The tire pressure warning valve and transmitters may not be used on wheels other than those originally fitted on the vehicle due to the air valve angle of the tire pressure warning valve and transmitter. Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU Tire Pressure Warning Reset Switch TW Tire Pressure Warning Light DLC3 Tire Pressure Warning Valve and Transmitter F100813E03 2. WHEN TIRE PRESSURE WARNING LIGHT IS LIT (a) When the tire pressure warning light does not go off, or when it turns on during driving, check the tire pressure. If the tire pressure warning light turns on within several hours after adjusting the tire pressure, the tire may have a slow air leak. TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 3. TW–11 (b) Under the following conditions, the system may not function properly: • Areas, facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle. • Devices using similar radio frequencies are used in the vehicle. • Large amounts of snow or ice are stuck to the vehicle, especially on the wheels and around the wheel houses. • The battery of the transmitter is depleted. • Tires and wheels without tire pressure warning valves and transmitters are used. • Snow tires and tire chains are used. • If wheels other than the specified ones are used, the system may not function properly because different radio waves are transmitted from the tire pressure warning valve and transmitter. • Depending on the tire type, the tire pressure warning valve and transmitter may not function properly even though the specified wheels are used. • The system may not function properly if it is initialized with tire pressures which are not the specified values. (c) After removing and installing the ECU or a sensor, output a diagnosis code and check that it is a normal code. FUNCTION OF COMPONENTS Components Function Tire pressure warning valve and transmitter Combined as a single unit with a disc wheel air valve, it measures tire pressure and temperature, and transmits an ID number for measurement value and identification. Built into the battery. Tire pressure warning antenna and receiver Receives a necessary signal from the transmitter to the tire pressure warning ECU. Tire pressure warning ECU Receives the signal from the receiver and identifies it as vehicle's own signal. If the measurement value is equal to or lower than the specified value, it transmits a signal so that the air pressure warning light on the combination meter turns on. Tire pressure warning light Located in the combination meter, it informs the driver of lowered tire air pressure and system failure. Tire pressure warning reset switch Enters the initialization mode for tire or wheel replacement, or tire rotation. 4. TIRE PRESSURE WARNING RESET SWITCH • By operating the tire pressure warning reset switch, the tire pressure warning ECU can be set to issue a warning at a specified tire pressure that corresponds to the type of tires. Therefore, the dealer must set the warning threshold to the proper value in order to comply with the local regulations. • Operate the tire pressure warning reset switch only after the tire pressures of all 4 tires have been adjusted on the vehicle. TW TW–12 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM • To initialize the system, press and hold the tire pressure warning reset switch for 3 seconds or longer with the power switch ON (IG). After the system has been initialized, the warning light blinks 3 times (1 second on, 1 second off). • During initialization, the tire pressure warning valve and transmitter measures the tire pressure of the tires, and registers the signals that are transmitted into the tire pressure warning ECU at a frequency of one per minute. The initialization process is completed when the signals from the 4 tires have been received. TW TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–13 HOW TO PROCEED WITH TROUBLESHOOTING HINT: • Use these procedures to troubleshoot the tire pressure warning system. • *: Use the intelligent tester. 1 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 PROBLEM SYMPTOM CONFIRMATION NEXT 4 INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* (a) Check for output DTCs. HINT: The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system. Result Result Proceed to MPX system DTC is not output A MPX system DTC is output B B PROCEED TO MULTIPLEX COMMUNICATION SYSTEM A 5 CHECK CAN COMMUNICATION SYSTEM* (a) Check for output DTCs. TW TW–14 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM HINT: The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system. Result Proceed to CAN system DTC is not output A CAN system DTC is output B B PROCEED TO CAN COMMUNICATION SYSTEM A 6 CHECK FOR DTC (OTHER THAN MPX AND CAN SYSTEM) (a) Check for a DTC and note any codes that are output. (b) Delete the DTC. (c) Recheck for DTCs, and try to prompt the DTC by simulating the original activity that the DTC suggests. Result Result Proceed to DTC does not reoccur A DTC reoccurs B B Go to step 9 A 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 TW Go to step 9 A 8 OVERALL ANALYSIS AND TROUBLESHOOTING* (a) DATA LIST/ACTIVE TEST (see page TW-28). (b) Terminals of ECU (see page TW-23). NEXT TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 9 TW–15 REPAIR OR REPLACE NEXT 10 CONFIRMATION TEST (a) Check for DTC (see page TW-27). (b) Perform initialization (see page TW-17). (c) Confirm that the initialization has been completed. NEXT END TW TW–16 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM REGISTRATION 7-digit number Transmitter ID C124986E03 1. IN CASE OF TIRE PRESSURE WARNING ECU REPLACEMENT (a) Read the ID stored in the old ECU using the intelligent tester. 2. IN CASE OF TIRE PRESSURE WARNING VALVE AND TRANSMITTER AND/OR TIRE PRESSURE WARNING ECU REPLACEMENT (a) Read the ID written on the tire pressure warning valve. 3. REGISTER TRANSMITTER ID NOTICE: It is necessary to register the transmitter ID in the tire pressure warning ECU when replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU. (a) Prepare all transmitter ID data before starting registration. HINT: • Read the registered transmitter IDs that are stored in the ECU using the intelligent tester and note them down. • If reading stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning antenna and receiver, remove the tires from the wheels and check the IDs written on the tire pressure warning valves and transmitters (see page TW-71). • When replacing the tire pressure warning valves and transmitters, note down the IDs written on the tire pressure warning valves and transmitters. (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) *1: Read and write down the ID (ID1 to ID4) by using the DATA LIST. (e) *2: Select REGIST TIRE by following the prompts on the intelligent tester screen. (UTILITY - REGIST TIRE) (f) *3: Select the registration mode "MAIN". TW C110646 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–17 (g) *4: Input the ID (ID1 to ID4) using the intelligent tester and transmit it to the tire pressure warning ECU. C110645 (h) Check that "THE REGISTRATION SUCCEEDED" appears on the intelligent tester screen. HINT: The previously registered IDs will be deleted from the memory when the registration is completed. If the operations of steps *1 to *4 do not complete within 5 minutes, the mode will return to normal operation mode. C107265 TW TW–18 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW C136882 4. CONFIRMATION OF TRANSMITTER ID REGISTRATION (a) Set the tire pressure of the 4 tires to the specified value. Standard pressure Front 240 kPa (2.4 kgf/cm Rear 2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Connect the intelligent tester (with CAN VIM) to the DLC3. TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–19 (c) Turn the power switch ON (IG). (d) Select "SIGNAL CHECK" mode on the intelligent tester (see page TW-19). (e) Confirm that the transmitter IDs and the data of tire pressure of all the tires are displayed on the intelligent tester screen. NOTICE: • It may take up to 1 minute to update the tire pressure data. • If the IDs have not been registered, DTC C2171/71 is set in the tire pressure warning ECU after approximately 60 minutes. TW TW–20 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM INITIALIZATION 1. INITIALIZATION NOTICE: • Perform the tire pressure warning system initialization after the transmitter ID registration has been completed. • The initialization is necessary when one of the following situations applies: - Tire pressure warning ECU is replaced. - Tires are replaced with those of different pressures. - Tire pressure warning valve and transmitters are replaced. - Vehicle is newly delivered. (a) Set the tire air pressure for the 4 wheels to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Keep the tire pressure warning reset switch pressed for 3 seconds or more with the power switch ON (IG). (c) Check that the tire pressure warning light blinks 3 times at 1 second intervals. HINT: The initialization is complete when the tire pressure warning ECU has received signals from all of the wheels. Tire Pressure Warning Light Tire Pressure Warning Reset Switch TW Tire Pressure Warning Light Output Pattern 1 sec. ON OFF 1 sec. F100814E01 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM CG 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TC F100115E41 TW–21 (d) Wait for 2 or 3 minutes with the power switch ON (IG). NOTICE: • The initialization is normally completed within 2 to 3 minutes. • If the initialization has not been completed successfully, DTC C2177/77 is set approximately 20 minutes after driving starts. • The initialization can be terminated by making a short circuit between terminals TC and CG of the DLC3 connector. (e) Confirm that the initialization has been completed using the intelligent tester. (1) Change the mode to test mode using intelligent tester and check that test DTCs have been stored. • The test DTCs will not be indicated until the system initialization is complete. • After the initialization has been completed successfully, the test DTCs (C2181/81 to C2191/91) are indicated. NOTICE: The following operations can be used instead of above procedure: 1. Turn the power switch from OFF to ON (IG). 2. Monitor the tire pressure values of all the wheels using intelligent tester. 3. If the tire pressure values cannot be displayed on the intelligent tester screen, the initialization has failed. 4. It takes 2 to 3 minutes to display the tire pressure data. HINT: In winter, as the tire pressure may decrease depending on the ambient temperature, increase the tire pressure by 20 kPa (0.2 kgf/ cm2, 2.9 psi) to 30 kPa (0.3 kgf/cm2, 4.3 psi) above the specified value after confirmation that the initialization has been completed. (f) Initialization is completed. TW TW–22 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TEST MODE PROCEDURE 1. TEST MODE CHECK HINT: • When entering the TEST MODE, the tire pressure warning ECU sets all the test DTCs first. After completing the test mode for each inspection item, the DTCs that are determined normal by the tire pressure warning ECU will be erased. The DTCs for other inspection items may not be erased when only a certain signal is inspected. • When the test mode returns back to the normal mode, all the test DTCs will be erased. (a) Make sure that the power switch is OFF. (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). Intelligent Tester CAN VIM A082795E11 (d) Select the TEST MODE on the intelligent tester. TW C122887 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 2. 0.125 sec. ON OFF 0.125 sec. F100632E02 TW–23 (e) Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second intervals. PERFORM SIGNAL CHECK HINT: • When entering signal check, the tire pressure warning ECU sets all the signal check DTCs first. After completing signal check for each inspection item, the DTCs that are determined to be normal by the tire pressure warning ECU will be erased. The DTCs for other inspection items may not be erased when only a certain signal is inspected. • When the signal check returns to normal mode, all the signal check DTCs will be erased. (a) Make sure that the power switch is OFF. (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) Select the SIGNAL CHECK on the intelligent tester. Intelligent Tester CAN VIM A082795E11 TW C110644 (e) Drive the vehicle at 12 mph (20 km/h) or more for 30 seconds or more. TW–24 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM (f) Loosen the valve core and rapidly reduce the pressure (above 40 kPa (0.4 kgf/cm2, 5.8 psi) /30 sec.). HINT: The transmitter ID can be transmitted by rapidly reducing the tire pressure. (g) Check that the tire pressure warning system test mode DTCs are erased. SIGNAL CHECK DTC Test Signal Signal Check DTC Clear Condition C2181 to C2184 Transmitter Data Receive DATA from the transmitter which has a registered ID in tire pressure warning ECU C2191 Vehicle Speed Signal Vehicle speed of 12 mph (20 km/h) or more is detected for 3 seconds or more (h) Result HINT: After the signal check is completed, check for a DTC and signal check DTC to confirm the system status. Condition Procedure SIGNAL CHECK DTC is output Repair the faulty part and enter SIGNAL CHECK again SIGNAL CHECK DTCs are cleared No problem (i) (j) End of SIGNAL CHECK After completing test mode (SIGNAL CHECK), turn the power switch OFF and disconnect the tester. DTC of SIGNAL CHECK (TEST DIAGNOSIS) HINT: If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code. For details of each code, refer to the relevant page listed under the respective "DTC No." in the chart. DTC No. Detection Item Trouble Area See page C2181/81 Transmitter ID1 not received • Tire pressure warning antenna and receiver Each tire pressure warning valve and transmitter Tire pressure warning ECU Wire harness TW-35 Tire pressure warning antenna and receiver Each tire pressure warning valve and transmitter Tire pressure warning ECU Wire harness TW-35 Tire pressure warning antenna and receiver Each tire pressure warning valve and transmitter Tire pressure warning ECU Wire harness TW-35 Tire pressure warning antenna and receiver Each tire pressure warning valve and transmitter Tire pressure warning ECU Wire harness TW-35 • • • C2182/82 Transmitter ID2 not received TW • • • • C2183/83 Transmitter ID3 not received • • • • C2184/84 Transmitter ID4 not received • • • • TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC No. Detection Item Trouble Area See page C2191/91 Vehicle speed signal error • • • • TW-53 Vehicle speed sensor Combination meter Tire pressure warning ECU Wire harness TW–25 TW TW–26 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM PROBLEM SYMPTOMS TABLE • 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. Tire pressure warning system Symptom Tire pressure warning system does not operate. DTC check cannot be performed. Tire pressure warning light malfunctions (does not light up). Tire pressure warning light malfunctions (remains on). Tire pressure warning light malfunctions (blinking). Initialization cannot be performed. TW Suspected area See page 1. Power source circuit TW-60 2. TC and CG terminal circuit TW-62 3. Tire pressure warning valve and transmitter TW-72 4. Combination meter ME-46 5. Tire pressure warning antenna and receiver TW-68 6. Tire pressure warning ECU TW-23 1. Power source circuit TW-60 2. TC and CG terminal circuit TW-62 3. Tire pressure warning ECU TW-23 1. Power source circuit TW-60 2. Tire pressure warning light circuit TW-58 3. Combination meter ME-11 4. Tire pressure warning ECU TW-23 1. Tire pressure check TW-3 2. Tire pressure warning ECU connector poorly connected - 3. Tire pressure warning light circuit TW-58 4. Combination meter ME-11 5. Tire pressure warning ECU TW-23 1. Check DTC TW-27 2. TC and CG terminal circuit TW-62 3. Test mode (SIGNAL CHECK) TW-19 4. Tire pressure warning ECU TW-23 1. Combination meter ME-46 2. Tire pressure warning reset switch circuit TW-55 3. Tire pressure warning ECU TW-23 TW–27 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TERMINALS OF ECU 1. CHECK TIRE PRESSURE WARNING ECU T11 F100629E05 (a) Measure the voltage of the connector. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition IG (T11-1) - GND (T11-7) B - W-B IG power source Power switch ON (IG) 10 to 16 V CLSW (T11-2) - GND (T11-7) GR - W-B Tire pressure warning reset switch Power switch ON (IG), Tire pressure warning reset switch on 8 to 15 V CLSW (T11-2) - GND (T11-7) GR - W-B Tire pressure warning reset switch Power switch ON (IG), Tire pressure warning reset switch off Below 1.5 V MPX1 (T11-6) - GND (T11-7) W - W-B Multiplex communication line Power switch ON (IG) 10 to 16 V RDA (T11-9) - GND (T117) B - W-B Tire pressure warning antenna and receiver signal Power switch ON (IG), when the tire pressure warning antenna and receiver is not connected 9 to 16 V RF5V (T11-10) - GND (T11-7) R - W-B Tire pressure warning antenna and receiver power source Power switch ON (IG) 4.5 to 5.5 V MPX2 (T11-12) - GND (T11-7) B - W-B Multiplex communication line Power switch ON (IG) 10 to 16 V GND2 (T11-4) - GND (T11-7) G - W-B Tire pressure warning antenna and receiver ground Always Below 1 Ω If the result is not as specified, the ECU may have a malfunction. DIAGNOSIS SYSTEM CG SG CANH 1. SIL 1 2 3 4 5 6 7 8 9 10 11 1213141516 CANL CHECK DLC3 (a) The ECM uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. BAT A082779E39 Symbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation CG (4) - Body ground Chassis ground Always Below 1 Ω SG (5) - Body ground Signal ground Always Below 1 Ω BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) HIGH - level CAN bus line Power switch is OFF* 54 to 69 Ω TW TW–28 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Symbols (Terminal No.) Terminal Description Condition Specified Condition CANH (6) - Battery positive HIGH - level CAN bus line Power switch is OFF* 1 MΩ or higher CANH (6) - CG (4) HIGH - level CAN bus line Power switch is OFF* 1 kΩ or higher CANL (14) - Battery positive LOW-level CAN bus line Power switch is OFF* 1 MΩ or higher CANL (14) - CG (4) LOW-level CAN bus line Power switch is OFF* 1 kΩ or higher NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, other switches or the doors. 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 UNABLE TO CONNECT TO VEHICLE, there may be a problem on the vehicle side or the tester side. • 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 may be in the tester itself. Consult the Service Department listed in the tester's instruction manual. 2. Combination Meter Tire Pressure Warning Light F100812E01 TW 3. DIAGNOSIS SYSTEM (a) Warning light (1) When there is a problem with the tire pressure warning system, the tire pressure warning light blinks at 0.5 second intervals. NOTICE: When the malfunction has been corrected, the tire pressure warning light does not turn on. (b) DTCs (normal mode) (1) DTCs are memorized in the tire pressure warning ECU and read by the blinks of the tire pressure warning light or using the intelligent tester (see page TW-27). (c) Test mode (1) By switching from normal mode into test mode (input signal check), you can inspect the tire pressure warning antenna and receiver, each tire pressure warning valve and transmitter and vehicle speed sensor (see page TW-17). CHECK WARNING LIGHT (a) Turn the power switch ON (IG). TW–29 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM (b) Check that the tire pressure warning light comes on for 3 seconds. If the warning check result is not normal, proceed to the troubleshooting for the tire pressure warning light circuit. Combination Meter Tire Pressure Warning Light Trouble Area See procedure Tire pressure warning light circuit TW-58 4. TIRE PRESSURE WARNING LIGHT HINT: The table below indicates the state of the tire pressure warning light after the power switch is turned ON (IG). F100812E01 Immediately after turning the power switch ON (IG) Always Turns on for 3 sec. Turns off Normal { { Low tire pressure { System fail { Test mode { Initialization { Warning light output pattern Blinks (*1) (Warning light flashes for 1 minute and then remains on) Blinks (*2) Blinks (*3) { { { { { ECU connector poorly connected TC ground Turns on { *1: Comes on and goes off repeatedly at 0.5 second intervals. HINT: The tire pressure warning light blinks for approximately 1 minute and then remains on. 0.5 sec. ON OFF 0.5 sec. 60 sec. F101087E02 *2: Comes on and goes off repeatedly at 0.125 second intervals. 0.125 sec. ON OFF 0.125 sec. C110635E04 TW TW–30 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM *3: Blinks 3 times (1 second on, 1 second off). 1 sec. ON OFF 1 sec. C110636E03 DTC CHECK / CLEAR 1. DLC3 CG TC Combination Meter Normal System Code 0.25 sec. ON OFF 0.25 sec. Code 13 and 33 1.5 sec. 0.5 sec. 2.5 sec. 4.5 sec. ON OFF 1.5 sec. 0.5 sec. Trouble Area See procedure Tire pressure warning light circuit TW-58 • If 2 or more malfunctions are indicated at the same time, the lowest numbered DTC is displayed first. (d) Refer to the Diagnostic Trouble Code Chart (see page TW-29) for DTC information. (e) Using SST, connect terminals TC and CG of DLC3. SST 09843-18040 Tire Pressure Warning Light TW CHECK DTC (USING SST CHECK WIRE) (a) Using SST, connect terminals TC and CG of DLC3. (b) Turn the power switch ON (IG). (c) Read and record any DTCs from the tire pressure warning light on the combination meter. Refer to the illustration on the left for examples of a normal system code and codes 13 and 33. HINT: • If the tire pressure warning light does not blink any DTCs or the normal system code, inspect the tire pressure warning light circuit or TC and CG terminal circuit. Repeat F100815E01 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 2. Intelligent Tester CAN VIM A082795E11 3. TW–31 CHECK DTC (USING INTELLIGENT TESTER) (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 prompts on the tester screen. HINT: Refer to the intelligent tester operator's manual for further details. CLEAR DTC HINT: After repairing the malfunctions, clear the DTCs. (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 prompts on the tester screen. HINT: Refer to the intelligent tester operator's manual for further details. TW TW–32 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 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) and press the intelligent tester main switch on. (c) Read the DATA LIST by following the directions on the tester screen. Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note MODE STATUS Tire pressure warning system mode / NORMAL or REG 2nd or REG M or TEST NORMAL: Normal mode TEST: Test mode - MAIN TIRE Number of main tire ID to be registered / 0 or 1 or 2 or 3 or 4 0 to 4 should be displayed - INITIAL SW Initialization switch / ON or OFF ON: Switch on OFF: Switch off - VEHICLE SPEED Vehicle speed reading / min.: 0 km/h (0 mph), max.: 255 km/h (158 mph) Actual vehicle speed Speed indicated on the combination meter REGIT ID1 CODE Registered ID1 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID1 is displayed - REGIT ID2 CODE Registered ID2 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID2 is displayed - REGIT ID3 CODE Registered ID3 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID3 is displayed - REGIT ID4 CODE Registered ID4 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID4 is displayed - TRANS STATUS ID code transmission status / FINISH or NOW FINISH or NOW - TIREPRESS1 ID1 tire inflation pressure / min.: 0 Actual tire inflation pressure - Actual tire inflation pressure - Actual tire inflation pressure - Actual tire inflation pressure - kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS2 ID2 tire inflation pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TW TIREPRESS3 ID3 tire inflation pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS4 ID4 tire inflation pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIRE TEMP1 ID1 temperature in tire / min.: 40°C (-40°F), max.: 215°C (419°F) Actual tire temperature - TIRE TEMP2 ID2 temperature in tire / min.: 40°C (-40°F), max.: 215°C (419°F) Actual tire temperature - TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIRE TEMP3 ID3 temperature in tire / min.: 40°C (-40°F), max.: 215°C (419°F) Actual tire temperature - TIRE TEMP4 ID4 temperature in tire / min.: 40°C (-40°F), max.: 215°C (419°F) Actual tire temperature - BATT VOLT1 ID1 battery voltage / OVER or LESS OVER - BATT VOLT2 ID2 battery voltage / OVER or LESS OVER - BATT VOLT3 ID3 battery voltage / OVER or LESS OVER - BATT VOLT4 ID4 battery voltage / OVER or LESS OVER - INITIAL SW INFO Initialization switch setting information / WITH or WITHOUT WITH or WITHOUT - ID1 initial threshold of low- Threshold pressure after initialization - Threshold pressure after initialization - Threshold pressure after initialization - Threshold pressure after initialization - Min.: 0, Max.: - - INIT THRESHOLD1 pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/ TW–33 cm2, 92.2 psi) INIT THRESHOLD2 ID2 initial threshold of lowpressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/ cm2, 92.2 psi) INIT THRESHOLD3 ID3 initial threshold of lowpressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/ cm2, 92.2 psi) INIT THRESHOLD4 ID4 initial threshold of lowpressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/ cm2, 92.2 psi) # CODES Number of DTC recorded / min.: 0, max.: 255 TW TW–34 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DIAGNOSTIC TROUBLE CODE CHART HINT: • If no abnormality is found when the parts are inspected, inspect the tire pressure warning ECU. • If a malfunction code is displayed during the DTC check, inspect the circuit listed for that code. For details of each code, refer to the "DTC No." in the DTC chart. DTC chart of tire pressure warning TW DTC No. Detection Item Trouble Area See page C2111/11 Transmitter ID1 Operation Stop 1. Tire pressure warning valve and transmitter 2. Tire pressure warning ECU TW-32 C2112/12 Transmitter ID2 Operation Stop 1. Tire pressure warning valve and transmitter 2. Tire pressure warning ECU TW-32 C2113/13 Transmitter ID3 Operation Stop 1. Tire pressure warning valve and transmitter 2. Tire pressure warning ECU TW-32 C2114/14 Transmitter ID4 Operation Stop 1. Tire pressure warning valve and transmitter 2. Tire pressure warning ECU TW-32 C2121/21 No Signal from Transmitter ID1 in Main Mode 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver 3. Tire pressure warning ECU 4. Wire harness TW-35 C2122/22 No Signal from Transmitter ID2 in Main Mode 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver 3. Tire pressure warning ECU 4. Wire harness TW-35 C2123/23 No Signal from Transmitter ID3 in Main Mode 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver 3. Tire pressure warning ECU 4. Wire harness TW-35 C2124/24 No Signal from Transmitter ID4 in Main Mode 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver 3. Tire pressure warning ECU 4. Wire harness TW-35 C2141/41 Transmitter ID1 Error 1. Tire pressure warning valve and transmitter TW-41 C2142/42 Transmitter ID2 Error 1. Tire pressure warning valve and transmitter TW-41 C2143/43 Transmitter ID3 Error 1. Tire pressure warning valve and transmitter TW-41 C2144/44 Transmitter ID4 Error 1. Tire pressure warning valve and transmitter TW-41 C2165/65 Abnormal Temperature Inside ID1 Tire 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver TW-43 C2166/66 Abnormal Temperature Inside ID2 Tire 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver TW-43 TW–35 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC No. Detection Item Trouble Area See page C2167/67 Abnormal Temperature Inside ID3 Tire 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver TW-43 C2168/68 Abnormal Temperature Inside ID4 Tire 1. Tire pressure warning valve and transmitter 2. Tire pressure warning antenna and receiver TW-43 C2171/71 Transmitter ID not Registered in Main Mode 1. Tire pressure warning ECU TW-46 C2176/76 Receiver Error 1. Tire pressure warning antenna and receiver 2. Tire pressure warning ECU 3. Wire harness TW-48 C2177/77 Initialization not Completed 1. Tire pressure warning valve and transmitter 2. Tire pressure warning ECU TW-52 C2181/81 Transmitter ID1 not Received (Test Mode DTC) 1. Tire pressure warning valve and transmitter 2. Each tire pressure warning valve and transmitter 3. Tire pressure warning ECU 4. Wire harness TW-35 C2182/82 Transmitter ID2 not Received (Test Mode DTC) 1. Tire pressure warning valve and transmitter 2. Each tire pressure warning valve and transmitter 3. Tire pressure warning ECU 4. Wire harness TW-35 C2183/83 Transmitter ID3 not Received (Test Mode DTC) 1. Tire pressure warning valve and transmitter 2. Each tire pressure warning valve and transmitter 3. Tire pressure warning ECU 4. Wire harness TW-35 C2184/84 Transmitter ID4 not Received (Test Mode DTC) 1. Tire pressure warning valve and transmitter 2. Each tire pressure warning valve and transmitter 3. Tire pressure warning ECU 4. Wire harness TW-35 C2191/91 Vehicle Speed Signal Error (Test Mode DTC) 1. Vehicle speed sensor 2. Tire pressure warning ECU 3. Combination meter 4. Wire harness TW-53 TW TW–36 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2111/11 Transmitter ID1 Operation Stop DTC C2112/12 Transmitter ID2 Operation Stop DTC C2113/13 Transmitter ID3 Operation Stop DTC C2114/14 Transmitter ID4 Operation Stop DESCRIPTION The tire pressure warning valve and transmitter that is installed in the tires and wheels measures the air pressure of the tires. The measured values are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure values are less than this threshold, the warning light in the combination meter turns on. The tire pressure warning ECU stores a DTC when the tire pressure warning valve stops transmitting signals. At this time, forcibly transmit the signals by releasing the tire pressure rapidly. The stored DTC is cleared when the signal transmission is resumed. DTC No DTC Detection Condition Trouble Area C2111/11 C2112/12 C2113/13 C2114/14 Tire pressure monitor valve stops transmitting signals • • Tire pressure warning valve and transmitter Tire pressure warning ECU HINT: It is necessary to perform the procedure to identify the tire pressure monitor valve that is malfunctioning because it cannot be identified by the output DTC. WIRING DIAGRAM Tire Pressure Warning Antenna and Receiver TW Tire Pressure Warning ECU +5V RF5V RDA RDA GND GND2 E118453E14 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–37 INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning antenna and receiver and/or the tire pressure warning ECU (see page TW-14). 1 PERFORM FORCED TRANSMISSION OF TRANSMITTER ID OF ALL WHEELS (a) Set the pressure of each tire to the specified value. Standard pressure Front Rear 2 240 kPa (2.4 kgf/cm , 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) Select TIREPRESS by following the prompts displayed on the intelligent tester. Tire pressure warning ECU Item Measurement item / Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure / min.: 0 kPa Actual tire pressure - Actual tire pressure - Actual tire pressure - Actual tire pressure - (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS2 ID2 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS3 ID3 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS4 ID4 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) (e) Rapidly release the pressure from each wheel by approximately 40 kPa (0.4 kgf/cm2, 5.8 psi) for 30 seconds or more. (1) Check that each tire pressure data displayed on the intelligent tester screen changes. OK: The tire pressure data displayed on the intelligent tester screen changes with the value of the tire pressure. NOTICE: • It may take up to 1 minute to display the updated tire pressure data. • When the TIREPRESS data (IDs 1 to 4) changes, reset the tire pressure of the tires to the specified value, rotate the tires 90 to 270° and recheck. (2) After confirming that the tire pressure data displayed on the intelligent tester screen has changed, set the pressure of each tire to the specified value. TW TW–38 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) HINT: If the tire pressure data displayed on the intelligent tester screen has not changed after rechecking, go to the troubleshooting procedures of DTCs C2121/ 21 to C2124/24 which indicate transmission or reception malfunctions (see page TW-35). NG OK END TW CHECK OTHER PROBLEM (MALFUNCTION IN TRANSMISSION OR RECEPTION FUNCTION) TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–39 DTC C2121/21 No Signal from Transmitter ID1 in Main Mode DTC C2122/22 No Signal from Transmitter ID2 in Main Mode DTC C2123/23 No Signal from Transmitter ID3 in Main Mode DTC C2124/24 No Signal from Transmitter ID4 in Main Mode DTC C2181/81 Transmitter ID1 not Received (Test Mode DTC) DTC C2182/82 Transmitter ID2 not Received (Test Mode DTC) DTC C2183/83 Transmitter ID3 not Received (Test Mode DTC) DTC C2184/84 Transmitter ID4 not Received (Test Mode DTC) DESCRIPTION The tire pressure warning valve and transmitter constantly sends radio waves to the tire pressure warning ECU. Under the following conditions, the tire pressure warning antenna and receiver is unable to receive the signals from the tire pressure warning valve and transmitter, and a DTC is output. • Areas, facilities, or devices that use similar radio frequencies are located in the vicinity of the vehicle. • Devices using similar radio frequencies are used in the vehicle. DTCs C2121/21 to C2124/24 can only be deleted by the tester. DTCs C2181/81 to C2184/84 can be deleted when the transmitter sends a forced transmission signal or the test mode ends. DTCs C2181/81 to C2184/84 are output only in the test mode. DTC No. DTC Detection Condition Trouble Area C2121/21 C2122/22 C2123/23 C2124/24 These DTCs are detected when no signals are received for 51 minutes or more, after a vehicle speed of 5 mph (8 km/h) or more is detected and no signals are received for 12 minutes or more • Malfunction in transmission / reception circuit • C2181/81 C2182/82 C2183/83 C2184/84 • • • • • • Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness Tire pressure warning valve and transmitter Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness HINT: When no signals are received for 60 minutes or more, a DTC is output. It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output DTC. TW TW–40 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM WIRING DIAGRAM Tire Pressure Warning ECU Tire Pressure Warning Antenna and Receiver +5V RF5V RDA RDA GND GND2 E118453E14 INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and/or the tire pressure warning ECU (see page TW-14). 1 IDENTIFY TRANSMITTER (CORRESPONDING TO DTC) (a) Set the pressure of each tire to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) Select TIREPRESS by following the prompts displayed on the intelligent tester. TW Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure/ minimum: 0 Actual tire pressure - Actual tire pressure - kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS2 ID2 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS3 ID3 tire pressure/ minimum: 0 Actual tire pressure - Actual tire pressure - TW–41 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS4 ID4 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) (e) Rapidly release the tire pressure from any tire by 40 kPa (0.4 kgf/cm2, 5.8 psi) for 30 seconds or more. HINT: • Identify the malfunctioning tire pressure warning valve and transmitter by rapidly releasing the tire pressures from each tire. • Record which TIREPRESS data (ID1 to ID5) corresponds to each tire. (f) Check the DATA LIST. Result Condition Detection Condition One of TIREPRESS data (ID1 to ID4) changed Normal No TIREPRESS data changed Transmitter corresponding to DTC NOTICE: • It may take up to 1 minute to display the updated tire pressure data. • When the TIREPRESS data (IDs 1 to 4) changes, reset the tire pressure of the tires to the specified value, rotate the tires 90 to 270° and recheck. • When the transmitter is normal, record the tire location and the transmitter ID. (g) When the TIREPRESS data (IDs 1 to 4) changes, repeat the same procedure on the rest of the tires (one by one) to identify which tire pressure warning valve and transmitter the DTC corresponds to. (h) Set the pressure of each tire to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm (i) 2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) Check all transmitters of the tires. Result Result Detection Condition One or more of transmitters abnormal A All abnormal B All normal C B C Go to step 3 END TW TW–42 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM A 2 CHECK TIRE PRESSURE WARNING VALVE AND TRANSMITTER (a) Select REGIT ID CODE by following the prompts displayed on the intelligent tester. Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note REGIT ID1 CODE Registered ID1 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID1 is display - REGIT ID2 CODE Registered ID2 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID2 is display - REGIT ID3 CODE Registered ID3 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID3 is display - REGIT ID4 CODE Registered ID4 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID4 is display - Transmitter ID (b) Remove the tire pressure warning valve and transmitter and check its ID number (see page TW-72). (c) Check whether the recorded transmitter ID and the actual transmitter ID match. Result Result Detection Condition Unmatched A Matched B F100616E01 B A PERFORM REGISTRATION (TRANSMITTER ID) TW REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER TW–43 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 3 CHECK WIRE HARNESS (ECU - RECEIVER) Wire Harness Side Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU T11 1 (RDA) T10 4 (GND2) 9 (RDA) 4 (GND) 5 (+5V) 10 (RF5V) B128075E03 (a) Disconnect the T11 ECU connector. (b) Disconnect the T10 receiver connector. (c) Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition T11-10 (RF5V) - T10-5 (+5V) Below 1 Ω T11-9 (RDA) - T10-1 (RDA) T11-4 (GND2) - T10-4 (GND) NG REPAIR OR REPLACE HARNESS AND CONNECTOR OK 4 READ VALUE OF INTELLIGENT TESTER (TIRE PRESSURE) (a) Check the DATA LIST tire pressure valve. Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure/ minimum: 0 Actual tire pressure - Actual tire pressure - Actual tire pressure - kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS2 ID2 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS3 ID3 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TW TW–44 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS4 ID4 tire pressure/ minimum: 0 Actual tire pressure - kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) OK: All tire pressure readings are equal to the actual tire pressure. NOTICE: It may take up to 1 minute to display the updated tire pressure data. OK END NG 5 CHECK ID CODE (TIRE PRESSURE WARNING VALVE AND TRANSMITTER) (a) Select REGIT ID CODE by following the prompts displayed on the intelligent tester. Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note REGIT ID1 CODE Registered ID1 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID1 is display - REGIT ID2 CODE Registered ID2 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID2 is display - REGIT ID3 CODE Registered ID3 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID3 is display - REGIT ID4 CODE Registered ID4 code/ minimum: 0 maximum: FFFFFFF The ID No. registered in transmitter ID4 is display - Transmitter ID TW (b) Remove the tire pressure monitor valve and check its ID number (see page TW-72). (c) Check whether the recorded transmitter ID and the actual transmitter ID match. Result Result Detection Condition Unmatched A Matched B F100616E01 B A PERFORM REGISTRATION (TRANSMITTER ID) REPLACE TIRE PRESSURE WARNING RECEIVER AND TRANSMITTER TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2141/41 Transmitter ID1 Error DTC C2142/42 Transmitter ID2 Error DTC C2143/43 Transmitter ID3 Error DTC C2144/44 Transmitter ID4 Error TW–45 DESCRIPTION DTC No. DTC Detection Condition Trouble Area C2141/41 C2142/42 C2143/43 C2144/44 If an "ERROR" signal is received 3 times consecutively, tire pressure monitor valve will be judged as defective and this DTC will be output. This will happen in situations where inflation pressure is outside range 0 to 537.5 kPa (0 to Tire pressure warning valve and transmitter 5.27 kgf/cm2, 0 psi to 77.7 psi), temperature inside tire is outside specified range -40 to 215°C (-40 to 419 °F), or an error occurs in tire pressure monitor valve. HINT: It is necessary to perform the procedure to identify the tire pressure monitor valve that is malfunctioning because it cannot be identified by the output DTC. INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and/or the tire pressure warning ECU (see page TW-14). 1 IDENTIFY TRANSMITTER (CORRESPONDING TO DTC) (a) Set the pressure of each tire to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) Select TIREPRESS by following the prompts displayed on the intelligent tester. Tire pressure warning ECU Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure/ minimum: 0 Actual tire pressure - Actual tire pressure - kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS2 ID2 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TW TW–46 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Item Measurement Item / Range (Display) Normal Condition Diagnostic Note TIREPRESS3 ID3 tire pressure/ minimum: 0 Actual tire pressure - Actual tire pressure - kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) TIREPRESS4 ID4 tire pressure/ minimum: 0 kPa (0 kgf/cm2, 0 psi) maximum: 637.5 kPa (6.5 kgf/ cm2, 92.5 psi) NOTICE: It may take up to 1 minute to display the updated data. (e) Rapidly release the tire pressure from any tire by 40 kPa (0.4 kgf/cm2, 5.8 psi) for 30 seconds or more. HINT: • Identify the malfunctioning tire pressure warning valve and transmitter by rapidly releasing the tire pressures from each tire. • Record which TIREPRESS data (ID1 to ID4) corresponds to each tire. (f) Check the DATA LIST. Result Condition Detection Condition One of TIREPRESS data (ID1 to ID4) changed Normal None of TIREPRESS data changed Transmitter corresponding to DTC NOTICE: • When the TIREPRESS data (IDs 1 to 4) changes, reset the tire pressure of the tires to the specified value, rotate the tires 90 to 270° and recheck. • When the transmitter is normal, record the tire location and the transmitter ID. (g) When one of the TIREPRESS data (IDs 1 to 4) changes, repeat the same procedure on the rest of the tires one by one to identify which tire pressure warning valve and transmitter the DTC corresponds to. (h) When the TIREPRESS data (IDs 1 to 4) has been changed, identify the malfunctioning tire pressure warning valve and transmitter by using recorded ID numbers and the output DTC. (i) Set the pressure of each tire to the specified value. Standard pressure TW Front 240 kPa (2.4 kgf/cm2 Rear , 35 psi) NEXT REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER 230 kPa (2.3 kgf/cm2, 33 psi) TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2165/65 Abnormal Temperature Inside ID1 Tire DTC C2166/66 Abnormal Temperature Inside ID2 Tire DTC C2167/67 Abnormal Temperature Inside ID3 Tire DTC C2168/68 Abnormal Temperature Inside ID4 Tire TW–47 DESCRIPTION The tire pressure warning valve and transmitter measures tire internal temperature as well as tire pressure, and transmits the information to the tire pressure monitor receiver along with the transmitter ID. If the measured temperature is out of the specified range, the tire pressure warning ECU recognizes it as a malfunction, outputs DTCs, and blinks the tire pressure warning light. DTC No. DTC Detection Condition Trouble Area C2165/65 C2166/66 C2167/67 C2168/68 Tire internal temperature is not within -40 to 120°C (-40 to 246°F) • • Tire Tire pressure warning valve and transmitter HINT: It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output DTC. INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and/or the tire pressure warning ECU (see page TW-14). 1 IDENTIFY TRANSMITTER (CORRESPONDING TO DTC) (a) Set the pressure of each tire to the specified value. Standard pressure Front Rear 2 240 kPa (2.4 kgf/cm , 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) (b) Connect the intelligent tester (with CAN VIM) to the DLC3. (c) Turn the power switch ON (IG). (d) Select TIREPRESS by following the prompts displayed on the intelligent tester. Tire pressure warning ECU Item Measurement item / Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure / min.: 0 kPa Actual tire pressure - Actual tire pressure - Actual tire pressure - (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS2 ID2 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS3 ID3 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TW TW–48 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Item Measurement item / Range (Display) Normal Condition Diagnostic Note TIREPRESS4 ID4 tire pressure / min.: 0 kPa Actual tire pressure - (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) (e) Rapidly release the tire pressure from any tire by 40 kPa (0.4 kgf/cm2, 5.8 psi) for 30 seconds or more. HINT: • Identify the malfunctioning tire pressure warning valve and transmitter by rapidly releasing the tire pressures from each tire. • Record which TIREPRESS data (ID1 to ID4) corresponds to each tire. (f) Check the DATA LIST. Result Condition Detection Condition One of TIREPRESS data (ID1 to ID4) changed Normal No TIREPRESS data changed Transmitter corresponding to DTC NOTICE: • It may take up to 1 minute to display the updated data. • When the TIREPRESS data (IDs 1 to 4) changes, reset the tire pressure of the tires to the specified value, rotate the tires 90 to 270° and recheck. • When the transmitter is normal, record the tire location and the transmitter ID. (g) When one of the TIREPRESS data (IDs 1 to 4) changes, repeat the same procedure on the rest of the tires (one by one) to identify which tire pressure warning valve and transmitter the DTC corresponds to. (h) When the TIREPRESS data (IDs 1 to 4) has been changed, identify the malfunctioning tire pressure warning valve and transmitter by using recorded ID numbers and output DTC. (i) Set the pressure of each tire to the specified value. Standard pressure Front Rear 2 240 kPa (2.4 kgf/cm , 35 psi) TW 230 kPa (2.3 kgf/cm2, 33 psi) NEXT 2 CHECK TIRE (a) Check that the tire is not punctured, and there is no indication of air pressure drop. OK: Tire is normal. NG REPLACE TIRE TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–49 OK REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER TW TW–50 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2171/71 Transmitter ID not Registered in Main Mode DESCRIPTION DTC No. DTC Detection Condition Trouble Area C2171/71 Transmitter ID code is not registered (when an ID code is unregistered for 51 minutes or more) Tire pressure warning ECU INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and/or the tire pressure monitor ECU (see page TW-14). HINT: Set the tire pressure to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) 1 READ VALUE OF INTELLIGENT TESTER (REGISTERED ID CODES) (a) Check the DATA LIST for proper functioning of the registered ID codes. Tire pressure warning ECU Item Measurement item/ Range (Display) Normal Condition Diagnostic Note REGIT ID1 CODE Registered ID1 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID1 is displayed - REGIT ID2 CODE Registered ID2 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID2 is displayed - REGIT ID3 CODE Registered ID3 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID3 is displayed - REGIT ID4 CODE Registered ID4 code / min.: 0, max.: FFFFFFF The ID No. registered in the transmitter ID4 is displayed - OK: The registered transmitter ID codes are displayed on the intelligent tester screen. OK TW REPLACE TIRE PRESSURE WARNING ECU NG 2 PERFORM REGISTRATION (TRANSMITTER ID) (a) Register the transmitter IDs for all the wheels (see page TW-14). (b) Set the pressure of each tire to the specified value. Standard pressure Front Rear 2 240 kPa (2.4 kgf/cm , 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–51 NEXT 3 READ VALUE OF INTELLIGENT TESTER (TIRE PRESSURE) (a) Check the DATA LIST tire pressure value. Tire pressure warning ECU Item Measurement item/ Range (Display) Normal Condition Diagnostic Note TIREPRESS1 ID1 tire pressure / min.: 0 kPa Actual tire pressure - Actual tire pressure - Actual tire pressure - Actual tire pressure - (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS2 ID3 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS3 ID3 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) TIREPRESS4 ID4 tire pressure / min.: 0 kPa (0 kgf/cm2, 0 psi), max.: 637.5 kPa (6.48 kgf/cm2, 92.2 psi) OK: All tire pressure readings are equal to the actual tire pressure. NOTICE: It may take up to 1 minute to display the tire pressure data. NG REPLACE TIRE PRESSURE WARNING ECU OK END TW TW–52 DTC TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM C2176/76 Receiver Error DESCRIPTION DTC No. C2176/76 DTC Detection Condition DTC is stored when either of following is detected: • Malfunction in tire pressure warning ECU internal circuit. • Terminal RF5V is shorted to ground. Trouble Area • • • Tire pressure warning antenna and receiver Tire pressure warning ECU Wire harness WIRING DIAGRAM Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU +5V RF5V RDA RDA GND GND2 E118453E14 INSPECTION PROCEDURE TW NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve abd transmitter and/or the tire pressure warning ECU (see page TW-14). HINT: Set the tire pressure to the specified value. Standard pressure Front Rear 240 kPa (2.4 kgf/cm2, 35 psi) 230 kPa (2.3 kgf/cm2, 33 psi) TW–53 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 1 CHECK TIRE PRESSURE WARNING ANTENNA AND RECEIVER (a) Measure the voltage of the connector. Standard voltage +5V Tester Connection Switch Condition Specified Condition T10-5 (+5V) - T10-4 (GND) Power switch ON (IG) 4.5 to 5.5 V NG Go to step 5 GND E113554E05 OK 2 CHECK WIRE HARNESS (ECU - RECEIVER) (a) Disconnect the T11 ECU connector. (b) Disconnect the T10 receiver connector. (c) Measure the resistance of the wire harness side connectors. Wire Harness Side Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU 1 (RDA) T10 T11 9 (RDA) B128075E04 Standard resistance Tester Connection Specified Condition T11-9 (RDA) - T10-1 (RDA) Below 1 Ω NG REPAIR OR REPLACE HARNESS AND CONNECTOR OK 3 NEXT REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER TW TW–54 4 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM CHECK DTC (a) Check for DTC (see page TW-27). OK: DTC is not output. HINT: • It is necessary to register an ID when replacing the tire pressure warning ECU (see page TW-14). • Read the ID on the DATA LIST before removing the tire pressure warning ECU. Register the ID in the new tire pressure warning ECU. NG REPLACE TIRE PRESSURE WARNING ECU OK END 5 CHECK WIRE HARNESS (ECU - RECEIVER) (a) Disconnect the T11 ECU connector. (b) Disconnect the T10 receiver connector. (c) Measure the resistance of the wire harness side connectors. Wire Harness Side Tire Pressure Warning Antenna and Receiver Tire Pressure Warning ECU T11 T10 4 (GND2) TW 4 (GND) 5 (+5V) 10 (RF5V) B128075E05 Standard resistance Tester Connection Specified Condition T11-4 (GND2) - T10-4 (GND) Below 1 Ω T11-10 (RF5V) - T10-5 (+5V) NG REPAIR OR REPLACE HARNESS AND CONNECTOR TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TW–55 OK REPLACE TIRE PRESSURE WARNING ECU TW TW–56 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2177/77 Initialization not Completed DESCRIPTION The initialization procedure starts when the tire pressure warning reset switch is pressed for 3 seconds or more with the power switch in the ON (IG) position. The tire pressure warning ECU registers the tire pressure data signals from the tire pressure warning valve and transmitter, and blinks the tire pressure warning light 3 times at 1 second intervals. DTC No. DTC Detection Condition Trouble Area C2177/77 Initialization not complete after vehicle driven at 5 mph (8 km/h) or more for total of 20 minutes or more. • • Tire pressure warning valve and transmitter Tire pressure warning ECU INSPECTION PROCEDURE NOTICE: • When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the intelligent tester and note them down before removal (see page TW-28). • It is necessary to perform initialization (see page TW-17) after registration (see page TW-14) the transmitter IDs into the tire pressure warning ECU after the tire pressure warning ECU and/ or tire pressure warning valve and transmitter have been replaced. 1 CHECK DTC (a) Check for DTCs (see page TW-27). Result Result Proceed to DTC C2177 output with another DTCs A Only DTC C2177 output B HINT: • When the tire pressure warning ECU receives no signals for several minutes after the initialization procedure has finished, a DTC is output. • When only DTC C2177 is output, refer to the other troubleshooting procedure (see page TW-35). B TW GO TO OTHER PROBLEM (MALFUNCTION IN TRANSMISSION OR RECEPTION) A INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC TW–57 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC) DESCRIPTION The tire pressure monitor ECU receives speed signals from the combination meter. This DTC is stored upon entering the test mode, and cleared when a vehicle speed signal of 20 km/h (12 mph) is detected for 3 seconds or more. The DTC is output only in the test mode. DTC No. DTC Detecting Condition C2191/91 Trouble Area • • • • Speed sensor circuit malfunction. Combination meter MPX communication system Tire pressure warning ECU Wire harness WIRING DIAGRAM Gateway ECU Tire Pressure Warning ECU Combination Meter MPD1 MPX- MPX+ MPX2 MPD2 MPX1 C128027E05 INSPECTION PROCEDURE NOTICE: • When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the intelligent tester and note them down before removal. • It is necessary to perform initialization (see page TW-17) after registration (see page TW-14) of the transmitter IDs into the tire pressure warning ECU after the ECU or valve and transmitter has been replaced. TW TW–58 1 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM CHECK DTC (a) Check for DTCs of the MPX communication and the speed sensor. Result Condition Proceed to MPX communication error DTC is output. A (See page MP-16) DTC of the vehicle speed sensor (C0200/31,C0205/32, C0210/33 and C0215/34) is output. B (See page BC-54, BC-61) DTCs of the MPX communication and the speed sensor are not output. C A REPAIR CIRCUITS INDICATED BY OUTPUT DTCS B REPAIR CIRCUITS INDICATED BY OUTPUT DTCS C 2 READ VALUE OF INTELLIGENT TESTER (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch to the ON (IG) position, and turn the intelligent tester on. (c) Select the item below in the DATA LIST, and read the value displayed on the intelligent tester. Tire pressure warning ECU Item VEHICLE SPEED Measurement Item / Range (Display) Vehicle speed reading/ min.: 0 km/h (0 mph) max.: 255 km/h (158 mph) Normal Condition Almost same as actual vehicle speed Diagnostic Note Speed indicated on the combination meter (d) Check that the value indicated on the tester and on the combination meter are the same. OK: Vehicle speed indicated on the intelligent tester indicates the actual speed. TW OK NG REPLACE COMBINATION METER REPLACE TIRE PRESSURE WARNING ECU TW–59 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Tire Pressure Warning Reset Switch Circuit DESCRIPTION During initialization, the tire pressure warning ECU receives the signal from the tire pressure warning reset switch. If the initialization is completely normally, the tire pressure warning light blinks 3 times (1 second on, 1 second off). WIRING DIAGRAM Tire Pressure Warning ECU Tire Pressure Warning Reset Switch CLSW GND F100645E10 INSPECTION PROCEDURE NOTICE: It is necessary to register an ID code after replacing the tire pressure warning valve and transmitter and / or the tire pressure warning ECU (see page TW-14). 1 CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION (a) Turn the power switch ON (IG). (b) Check that the tire pressure warning light comes on for 3 seconds. TW TW–60 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM (c) Perform the tire pressure warning reset switch test in TEST MODE PROCEDURE (see page TW-19). OK: Reset switch ON: Tire pressure warning light comes on. Reset switch OFF: Tire pressure warning light blinks. OK PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE NG 2 INSPECT TIRE PRESSURE WARNING RESET SWITCH Tire Pressure Warning Reset Switch (a) Remove the tire pressure warning reset switch. (b) Measure the resistance of the switch. Standard resistance Tester Connection ON 2 1 OFF C107260E05 OK TW Switch Condition Specified Condition 1-2 ON Below 1 Ω 1-2 OFF 10 kΩ or higher NG REPLACE TIRE PRESSURE WARNING RESET SWITCH TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 3 TW–61 CHECK WIRE HARNESS (RESET SWITCH - TIRE PRESSURE WARNING ECU) Wire Harness Side Tire Pressure Warning Reset Switch T12 (a) Disconnect the T12 tire pressure warning reset switch connector and T11 tire pressure warning ECU connector. (b) Measure the resistance of the wire harness side connectors. Standard resistance Tester Connection Specified Condition T11-2 (CLSW) - T12-1 Below 1 Ω T11-2 (CLSW) - Body ground 10 kΩ or higher NG REPAIR OR REPLACE HARNESS AND CONNECTOR Tire Pressure Warning ECU T11 2 (CLSW) C111010E05 OK REPLACE TIRE PRESSURE WARNING ECU TW TW–62 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM Tire Pressure Warning Light Circuit DESCRIPTION When the tire pressure decreases, the ECU sends the communication signal to the combination meter assembly through the BEAN, and it illuminates the tire pressure warning light on the combination meter assembly. The tire pressure warning light also turns on when the signal for the tire pressure warning light is cut off. HINT: Refer to the "TIRE PRESSURE WARNING LIGHT CHART" section of the "DIAGNOSIS SYSTEM" for checking the condition of the tire pressure warning light (see page TW-24). WIRING DIAGRAM Gateway ECU Tire Pressure Warning ECU Combination Meter MPD1 MPX- MPX+ MPX2 MPD2 MPX1 C128027E01 TW INSPECTION PROCEDURE NOTICE: It is necessary to perform initialization (see page TW-17) after registration (see page TW-14) of the transmitter IDs into the tire pressure warning ECU after the ECU or valve and transmitter has been replaced. HINT: This procedure must be performed according to the PROBLEM SYMPTOMS TABLE. TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 1 TW–63 CHECK DIAGNOSTIC CODE OUTPUT (a) Check if DTC B1247 is output in the multiplex communication system (See page MP-41). Result Result Proceed to B1247 is not output A B1247 is output B B REPAIR CIRCUIT INDICATED BY OUTPUT CODE A 2 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (TIRE PRESSURE WARNING LIGHT) (a) Connect the intelligent tester (with CAN VIM) to the DLC3. (b) Turn the power switch ON (IG) and press the intelligent tester main switch on. (c) Select the ACTIVE TEST mode on the intelligent tester. (d) Check the condition of the tire pressure warning light by operating the tester. Combination meter Item Vehicle Condition / Test Details Diagnostic Note TIRE PRESS WARN Tire pressure warning light / ON or OFF ON: light turns on OFF: light turns off OK: The warning light turns on when operating the tester. NG REPLACE COMBINATION METER ASSEMBLY OK REPLACE TIRE PRESSURE WARNING ECU TW TW–64 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit DESCRIPTION This is the power source for the tire pressure warning ECU. It also supplies the power to the tire pressure warning antenna and receiver via the ECU. WIRING DIAGRAM Tire Pressure Warning ECU ECU-IG IG IG1D IG1 AM1 Power Source Control ECU GND B128079E01 TW INSPECTION PROCEDURE 1 INSPECT FUSE (ECU-IG) (a) Remove the ECU-IG fuse from the driver side junction block. (b) Measure the resistance of the fuse. Standard resistance: Below 1 Ω TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM NG TW–65 CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK 2 CHECK WIRE HARNESS (TIRE PRESSURE WARNING ECU - BATTERY) (a) Disconnect the T11 tire pressure warning ECU connector. (b) Turn the power switch ON (IG). (c) Measure the voltage of the wire harness side connector. Standard voltage Wire Harness Side T11 Tester Connection Specified Condition T11-1 (IG) - Body ground 10 to 14 V NG 1 (IG) REPAIR OR REPLACE HARNESS AND CONNECTOR C110949E17 OK 3 CHECK WIRE HARNESS (TIRE PRESSURE WARNING ECU - BODY GROUND) (a) Disconnect the T11 tire pressure warning ECU connector. (b) Measure the resistance of the wire harness side connector. Standard resistance Wire Harness Side T11 Tester Connection Specified Condition T11-7 (GND) - Body ground Below 1 Ω NG 7 (GND) C110949E18 OK REPLACE TIRE PRESSURE WARNING ECU REPAIR OR REPLACE HARNESS AND CONNECTOR TW TW–66 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM TC and CG Terminal Circuit DESCRIPTION DTC output mode is set by connecting terminals TC and CG of the DLC3. The DTCs are displayed by blinking the tire pressure warning light. TW TW–67 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM WIRING DIAGRAM Tire Pressure Warning ECU Combination Meter MPX2 MPX+ MPX- Power Source Control ECU Gateway ECU MPD2 MPX1 MPX2 MPX1 MPD1 CA1H ECM CANH CA1L CANL TC DLC3 TW TC CANH CANL CG B128089E01 TW–68 TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM INSPECTION PROCEDURE 1 CHECK CAN COMMUNICATION SYSTEM AND MULTIPLEX COMMUNICATION SYSTEM (a) Check if a DTC of CAN communication system and multiplex communication system is output. Result Result Proceed to DTC is not output A DTC is output B B REPAIR CIRCUITS INDICATED BY OUTPUT DTCS A 2 CHECK WIRE HARNESS (ECM - DLC3) (a) Disconnect the E6 ECM connector. (b) Measure the resistance of the wire harness side connector. Standard resistance Wire Harness Side ECM E6 DLC3 D1 TC B128090E01 OK Specified Condition E6-14 (TC) - D1-13 (TC) Below 1 Ω D1-13 (TC) - Body ground 10 kΩ or higher NG TC TW Tester Connection REPAIR OR REPLACE HARNESS AND CONNECTOR TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM 3 TW–69 INSPECT DLC3 TERMINAL VOLTAGE (a) Turn the power switch ON (IG). (b) Measure the voltage of the DLC3 connector. Standard voltage D1 Tester Connection Specified Condition D1-13 (TC) - Body ground 10 to 14 V NG REPLACE ECM TC H100769E70 OK 4 CHECK WIRE HARNESS (DLC3 - BODY GROUND) (a) Measure the resistance of the DLC3 connector. Standard resistance D1 Tester Connection Specified Condition D1-4 (CG) - Body ground Below 1 Ω NG REPAIR OR REPLACE HARNESS AND CONNECTOR CG H100769E71 OK REPLACE TIRE PRESSURE WARNING ECU TW TW–66 TIRE AND WHEEL – TIRE PRESSURE WARNING RECEIVER TIRE PRESSURE WARNING RECEIVER SUSPENSION TIRE AND WHEEL & AXLE COMPONENTS ROOF SIDE INNER GARNISH ASSEMBLY RH CONNECTOR REAR DOOR OPENING TRIM WEATHERSTRIP RH 7.5 (76, 66 in.*lbf) TIRE PRESSURE WARNING RECEIVER ASSEMBLY TW 42 (430, 31) DECK TRIM SIDE PANEL ASSEMBLY RH REAR DOOR SCUFF PLATE RH REAR SEAT 3 POINT TYPE BELT ASSEMBLY RH N*m (kgf*cm, ft.*lbf) : Specified torque C128499E01 TW–67 TIRE AND WHEEL – TIRE PRESSURE WARNING RECEIVER BACK DOOR WEATHERSTRIP TONNEAU COVER ASSEMBLY DECK TRIM COVER REAR REAR FLOOR NO. 3 BOARD ROPE HOOK REAR FLOOR NO. 1 BOARD REAR FLOOR NO. 2 BOARD REAR FLOOR NO. 4 BOARD REAR SIDE SEATBACK FRAME RH DECK FLOOR BOX LH TW DECK FLOOR BOX REAR REAR SEAT CUSHION ASSEMBLY REAR SIDE SEATBACK FRAME LH C128500E01 TW–68 TIRE AND WHEEL – TIRE PRESSURE WARNING RECEIVER REMOVAL 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE REAR SEAT CUSHION ASSEMBLY (See page SE-15) 3. REMOVE REAR DOOR SCUFF PLATE RH (See page IR-9) 4. REMOVE REAR SIDE SEATBACK FRAME LH (See page IR-9) 5. REMOVE REAR SIDE SEATBACK FRAME RH (See page IR-9) 6. REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP RH 7. REMOVE REAR SEAT 3 POINT TYPE BELT ASSEMBLY RH (See page IR-10) 8. REMOVE BACK DOOR WEATHERSTRIP 9. REMOVE TONNEAU COVER ASSEMBLY 10. REMOVE REAR FLOOR NO. 2 BOARD 11. REMOVE REAR FLOOR NO. 3 BOARD 12. REMOVE REAR FLOOR NO. 4 BOARD 13. REMOVE DECK FLOOR BOX REAR 14. REMOVE DECK FLOOR BOX LH 15. REMOVE REAR FLOOR NO. 1 BOARD (See page IR10) 16. REMOVE DECK TRIM COVER REAR (See page IR-10) 17. REMOVE DECK TRIM SIDE PANEL ASSEMBLY RH (See page IR-11) 18. REMOVE ROOF SIDE INNER GARNISH ASSEMBLY RH (See page IR-11) TW 19. REMOVE TIRE PRESSURE WARNING RECEIVER ASSEMBLY (a) Disconnect the connector. (b) Remove the bolt. (c) Using a clip remover, detach the clip and remove the receiver. Clip Connector C128501E01 TIRE AND WHEEL – TIRE PRESSURE WARNING RECEIVER TW–69 INSTALLATION Clip 1. INSTALL TIRE PRESSURE WARNING RECEIVER ASSEMBLY (a) Attach the clip and install the bolt with the receiver. Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) (b) Connect the connector. 2. INSTALL ROOF SIDE INNER GARNISH ASSEMBLY RH (See page IR-15) 3. INSTALL DECK TRIM SIDE PANEL ASSEMBLY RH (See page IR-16) 4. INSTALL REAR DECK TRIM COVER (See page IR-16) 5. INSTALL REAR FLOOR NO. 1 BOARD (See page IR16) 6. INSTALL DECK FLOOR BOX LH 7. INSTALL DECK FLOOR BOX REAR 8. INSTALL REAR FLOOR NO. 4 BOARD 9. INSTALL REAR FLOOR NO. 3 BOARD Connector C128501E01 10. INSTALL REAR FLOOR NO. 2 BOARD 11. INSTALL TONNEAU COVER ASSEMBLY 12. INSTALL BACK DOOR WEATHERSTRIP 13. INSTALL REAR SEAT 3 POINT TYPE BELT ASSEMBLY RH (See page IR-16) 14. INSTALL REAR DOOR OPENING TRIM WEATHERSTRIP RH 15. INSTALL REAR SIDE SEATBACK FRAME LH (See page IR-17) 16. INSTALL REAR SIDE SEATBACK FRAME RH (See page IR-17) 17. INSTALL REAR DOOR SCUFF PLATE RH (See page IR-19) 18. INSTALL REAR SEAT CUSHION ASSEMBLY (See page SE-23) 19. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL NOTICE: • 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. • With the power switch's power mode changed to ON (IG), disconnect the battery. If the key is not in the key slot during reconnection, DTC B2799 may be output. TW TW–70 TIRE AND WHEEL – TIRE PRESSURE WARNING RECEIVER 20. REGISTER TRANSMITTER ID (a) Register the transmitter ID (see page TW-14). 21. INSPECT TIRE PRESSURE WARNING SYSTEM (a) Inspect the tire pressure warning system (see page TW-22). 22. PERFORM INITIALIZATION (a) Perform initialization (see page TW-17). NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal. TW TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTER TW–71 TIRE PRESSURE WARNING VALVE AND TRANSMITTER SUSPENSION TIRE AND WHEEL & AXLE COMPONENTS INNER GROMMET WASHER 4.0 (41, 35 in.*lbf) NUT TIRE PRESSURE WARNING VALVE SUB-ASSEMBLY VALVE CORE TW CAP N*m (kgf*cm, ft.*lbf) : Specified torque C128502E01 TW–72 TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTER REMOVAL Tire 1. REMOVE FRONT WHEEL 2. REMOVE REAR WHEEL 3. REMOVE TIRE PRESSURE WARNING VALVE SUBASSEMBLY (a) Remove the valve core and cap, and release air from the tire. (b) After ensuring that air is sufficiently released, remove the nut and washer that are used to fix the tire pressure warning valve and drop the valve sensor inside the tire. HINT: Keep the removed cap, valve core, nut and washer. (c) After dropping the tire pressure warning valve into the tire, disengage the bead using the shoe of the tire remover. NOTICE: Be careful not to damage the tire pressure warning valve because of interference between the sensor and tire bead. (d) Remove the bead on the upper side. (e) Take out the valve sensor from the tire and remove the bead on the lower bead. HINT: Check that there are no cracks or damage on the grommet. If any damage is found, replace the grommet together with the washer and nut. Shoe 10 to 20 mm (0.39 to 0.79 in.) C083779E01 INSTALLATION Print Surface C128503E01 TW 1. INSTALL TIRE PRESSURE WARNING VALVE SUBASSEMBLY (a) Insert the tire pressure warning valve into the valve installation hole. Insert it from the inside of the rim so that the print surface can be seen. NOTICE: • Check that there is no visible deformation, damage or other abnormalities on the transmitter. • Check that there is no foreign matter on the inner grommet and around the rim hole. • If installed in the reverse direction, the tire pressure warning valve may be damaged or fail to transmit signals when running at high speed. • If installing a new tire pressure warning valve, write down the ID number before installation. • It is necessary to register the ID in the ECU after installation (see page TW-14). TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTER (b) Set the washer on the tire pressure monitor valve rim side. Tighten the tire pressure warning valve with the nut. Torque: 4.0 N*m (41 kgf*cm, 35 ft.*lbf) NOTICE: • Check that there is no foreign matter on the washer and nut. • If the tire pressure warning valve is removed when the tire is removed for replacement, check that there is no damage or cuts, and no foreign matter such as mud, dirt or sand attached to the grommet. Replace the grommet with a new one if necessary. • Check that there is no oil, water or lubricant around the rim hole, tire pressure warning valve, washer and nut. Failing to check may result in improper installation. (c) After the tire is inflated, the valve nut may be loose. Retighten the nut to the specified torque and then check for air leaks with soapy water. Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf) Grommet Nut Rim Sensor Cap Washer C128504E01 (d) Set the wheel disc to the mounting machine and install the lower tire bead. Position the main body of the valve sensor as in the shaded area shown in the illustration. NOTICE: If the valve sensor is positioned outside this area, it generates interference with the tire bead, and may cause damage to the valve sensor. (e) Install the upper bead. NOTICE: Make sure that the tire bead and tool do not interfere with the main body of the valve sensor and that the valve sensor is not clamped by the bead. Mount Tool of Mounting Machine Rim Rim Rotating Direction Area for Valve Sensor Mount Tool of Mounting Machine Rim Rim Rotating Direction Area for Valve Sensor TW–73 2. INSTALL FRONT WHEEL Torque: 131 N*m (1,340 kgf*cm, 97 ft.*lbf) 3. INSTALL REAR WHEEL Torque: 131 N*m (1,340 kgf*cm, 97 ft.*lbf) 4. INSPECT TIRE (a) Inspect the tire (see page TW-3). 5. REGISTER TRANSMITTER ID (a) Register the transmitter ID (see page TW-14). 6. INSPECT TIRE PRESSURE WARNING SYSTEM (a) Inspect the tire pressure warning system (see page TW-22). C084539E01 TW TW–74 TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTER DISPOSAL HINT: The tire pressure monitor valve is powered by a lithium battery. When disposing of the tire pressure monitor valve, remove the battery and dispose of it correctly. 1. DISPOSE OF TIRE PRESSURE WARNING VALVE SUB-ASSEMBLY (a) Using a screwdriver, pry off the cover. Remove the back cover. C128511 Lithium Battery Base Board Terminal C128512E01 TW (b) The battery and base board covered with resin are exposed. While taking out the battery, cut the 2 terminals which connect the battery and base board. TIRE AND WHEEL – TIRE PRESSURE WARNING ECU TW–75 TIRE PRESSURE WARNING ECU SUSPENSION TIRE AND WHEEL & AXLE COMPONENTS MULTI-DISPLAY ASSEMBLY NO. 3 INSTRUMENT PANEL REGISTER ASSEMBLY INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY UPPER NO. 2 INSTRUMENT PANEL REGISTER ASSEMBLY CONNECTOR NO. 4 INSTRUMENT PANEL REGISTER ASSEMBLY 7.5 (76, 66 in.*lbf) NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY TIRE PRESSURE WARNING ECU TW INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LOWER N*m (kgf*cm, ft.*lbf) : Specified torque C128497E01 TW–76 TIRE AND WHEEL – TIRE PRESSURE WARNING ECU REMOVAL 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-5) 3. REMOVE INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY LOWER (See page IP-6) 4. REMOVE INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY UPPER (See page IP-6) 5. REMOVE NO.3 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-6) 6. REMOVE NO.4 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-6) 7. REMOVE NO.2 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-7) 8. REMOVE MULTI-DISPLAY ASSEMBLY (a) Remove the multi-display (see page IP-7). 9. REMOVE TIRE PRESSURE WARNING ECU (a) Disconnect the connector. (b) Remove the bolt and ECU. Connector C128498E01 INSTALLATION TW Connector C128498E01 1. INSTALL TIRE PRESSURE WARNING ECU (a) Install the ECU with the bolt. Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) (b) Connect the connector. 2. INSTALL MULTI-DISPLAY ASSEMBLY (a) Install the multi-display (see page IP-12). 3. INSTALL NO. 2 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-12) 4. INSTALL NO. 4 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-12) 5. INSTALL NO. 3 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-13) 6. INSTALL INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY UPPER (See page IP-13) TIRE AND WHEEL – TIRE PRESSURE WARNING ECU TW–77 7. INSTALL INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY LOWER (See page IP-13) 8. INSTALL NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY (See page IP-13) 9. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL NOTICE: • 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. • With the power switch's power mode changed to ON (IG), disconnect the battery. If the key is not in the key slot during reconnection, DTC B2799 may be output. 10. REGISTER TRANSMITTER ID (a) Register the transmitter ID (see page TW-14). 11. INSPECT TIRE PRESSURE WARNING SYSTEM (a) Inspect the tire pressure warning system (see page TW-22). 12. PERFORM INITIALIZATION (a) Perform initialization (see page IN-32). NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal. TW