CRUISE CONTROL – CRUISE CONTROL SYSTEM

CC–1

CRUISE CONTROL SYSTEM
PRECAUTION
1.

NOTICE FOR INITIALIZATION
NOTICE:
When the cable of the negative (-) battery terminal is
disconnected, initialize the following system(s) after
the cable is reconnected.

System Name

See procedure

Power Window Control System

IN-32

2.

3.

NOTICE FOR HYBRID SYSTEM ACTIVATION
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.
NOTICE FOR CRUISE CONTROL SYSTEM
NOTICE:
Push the cruise control main switch ON-OFF button
"off" and reset the cruise control if the CRUISE main
indicator light blinks while driving with cruise
control. When the cruise control cannot be set by
this procedure or canceled immediately after setting,
there may be a problem in the cruise control system.
Do not inspect the cruise control system under the
following road conditions:
• Heavy traffic
• Steep downhill
• Sharp turns
• Icy or snowy roads
• Slippery roads

CC

CC–2

CRUISE CONTROL – CRUISE CONTROL SYSTEM

PARTS LOCATION
THROTTLE BODY
- THROTTLE POSITION SENSOR
- THROTTLE MOTOR

INVERTER

CC

HYBRID VEHICLE
CONTROL ECU

GATEWAY ECU
COMBINATION METER

SKID CONTROL
ECU

SHIFT POSITION
SENSOR

CRUISE CONTROL MAIN SWITCH
STOP LIGHT
SWITCH

SPIRAL CABLE SUB-ASSEMBLY

DLC3

ACCELERATOR PEDAL
POSITION SENSOR

B140276E01

CC–3

CRUISE CONTROL – CRUISE CONTROL SYSTEM

SYSTEM DIAGRAM

Cruise Control Main Switch

Stop Light Switch

Inverter

Hybrid Vehicle
Control ECU

Combination Meter

CC

Accelerator Pedal Position Sensor

Throttle Position
Sensor and Motor

Shift Position Sensor

CAN Communication Line

Skid Control ECU

ECM

Gateway ECU

BEAN

Combination Meter

I102162E01

Communication method
Transmitting ECU

Receiver

Hybrid Vehicle Control ECU

ECM

Engine torque demand signal

CAN

Combination Meter

•
•

•
•

Hybrid Vehicle Control ECU

Cruise control cancel signal

Skid Control ECU

Signals

CRUISE main indicator signal
Cruise control warning signal

Communication Method

CAN
BEAN

CAN

CC–4

CRUISE CONTROL – CRUISE CONTROL SYSTEM

SYSTEM DESCRIPTION
1.

2.

CC

3.

CRUISE CONTROL SYSTEM DESCRIPTION
The cruise control system controls constant speed
driving. It enables the driver to adjust vehicle speed by
operating the cruise control main switch without using
the accelerator pedal.
Receiving signals from each switch and sensor, the
hybrid vehicle control ECU controls constant speed
driving by optimizing the use of the engine and motor
driving force.
LIMIT CONTROL
(a) Low speed limit
The lowest possible limit of the speed setting range
is approximately 40 km/h (25 mph). The cruise
control system cannot be set when the driving
speed is below the low speed limit. Constant speed
control will be automatically canceled and the stored
vehicle speed will be erased when the vehicle
speed goes below the low speed limit while the
constant speed control is in operation.
(b) High speed limit
The highest possible limit of the speed setting range
is approximately 180 km/h (112 mph). The cruise
control system cannot be set when the driving
speed is over the high speed limit. Speed up using
RESUME/+ with the cruise control main switch
assembly also cannot be set beyond the high speed
limit.
CRUISE CONTROL OPERATION
(a) Cruise control main switch
The cruise control main switch operates 7 functions:
SET, COAST, TAP-DOWN, RESUME, ACCEL,
TAP-UP, and CANCEL. The SET, TAP-DOWN and
COAST functions, and the RESUME, TAP-UP and
ACCEL functions share the same switch. Each
function can be controlled by moving the switch in
the directions of the arrows on the cruise control
main switch assembly. The switch will return
automatically after it is released.
(b) Set control
Vehicle speed is stored and constant speed control
is maintained when pushing the switch to -/SET
while driving with the cruise control main switch ONOFF button "on" (CRUISE main indicator light is on),
and the vehicle speed is within the set speed range
(between the low and high speed limits).

CRUISE CONTROL – CRUISE CONTROL SYSTEM

CC–5

(c) Coast control
The hybrid vehicle control ECU decreases the
cruise control demand speed and controls the
engine and motor driving force to decelerate the
vehicle when -/SET on the cruise control main
switch is pressed and held while the cruise control
system is in operation. Vehicle speed, when the
cruise control main switch is released from -/SET, is
stored and constant speed control is maintained.
(d) Tap-down control
When tapping down on the cruise control main
switch to -/SET (for approx. 0.5 seconds) while the
cruise control system is in operation, the stored
vehicle speed decreases each time by
approximately 1.6 km/h (1.0 mph).
However, when the difference between the driving
and the stored vehicle speed is more than 5 km/h
(3.1 mph) and the cruise control main switch is
released from -/SET, the vehicle speed will be
stored and constant speed control is maintained.
(e) Acceleration control
The hybrid vehicle control ECU increases the cruise
control demand speed and controls the engine and
motor driving force to accelerate the vehicle when +/
RES on the cruise control main switch is pressed
and held while the cruise control system is in
operation.
Vehicle speed, when the cruise control main switch
is released from +/RES, is stored and constant
speed control is maintained.
(f) Tap-up control
When tapping up on the cruise control main switch
to +/RES (for approx. 0.5 seconds) while the cruise
control system is in operation, the stored vehicle
speed increases each time by approximately 1.6
km/h (1.0 mph). However, when the difference
between the driving and the stored vehicle speed is
more than 5 km/h (3.1 mph), the stored vehicle
speed will not be changed.
(g) Resume control
If constant speed control was canceled with the stop
light switch or the CANCEL switch, and if driving
speed is within the limit range, pushing the cruise
control main switch to -/RES restores vehicle speed
memorized at the time of cancellation, and restarts
constant speed control.
(h) Manual cancel control
Doing any of the following cancels the cruise control
system while in operation. (The stored vehicle
speed in the hybrid vehicle ECU is maintained).
• Depressing the brake pedal
• Shifting into any position except D
• Pushing the cruise control main switch to
CANCEL

CC

CC–6

CRUISE CONTROL – CRUISE CONTROL SYSTEM

(i)

CC

• Pushing the cruise control main switch ON-OFF
button "off" (The stored vehicle speed in the
hybrid vehicle control ECU is not maintained).
Auto cancel (fail-safe)
This system has an automatic cancellation function
(fail-safe) (see page CC-12).

CC–7

CRUISE CONTROL – CRUISE CONTROL SYSTEM

HOW TO PROCEED WITH
TROUBLESHOOTING
HINT:
• Use these procedures to troubleshoot the cruise control
system.
• *: Use the intelligent tester.

1

VEHICLE BROUGHT TO WORKSHOP

NEXT

CC
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

CHECK INDICATOR LIGHT

NEXT

4

CHECK DTC*
(a) Check for DTCs 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 7

A

5

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

CC–8

CRUISE CONTROL – CRUISE CONTROL SYSTEM

A

6

OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Terminals of ECU (see page CC-9)
(b) DATA LIST / ACTIVE TEST (see page CC-13)

NEXT

7

CC

REPAIR OR REPLACE

NEXT

8

CONFIRMATION TEST

NEXT
END

ROAD TEST
1.

I102366

I102367

PROBLEM SYMPTOM CONFIRMATION
(a) Inspect the SET function.
(1) Push the ON-OFF button "on".
(2) Drive at the required speed (40 km/h (25 mph)
or higher).
(3) Push the cruise control main switch to -/SET.
(4) Check that the vehicle cruises at the set speed
after releasing the switch.
(b) Inspect the "+ (ACCEL)" function.
(1) Push the ON-OFF button "on".
(2) Drive at the required speed (40 km/h (25 mph)
or higher).
(3) Push the cruise control main switch to -/SET.
(4) Check that vehicle speed increases while the
cruise control main switch is pushed to +/RES,
and that the vehicle cruises at the newly set
speed when the switch is released.
(5) Momentarily push the cruise control main switch
to +/RES and then immediately release it. Check
that vehicle speed increases by approximately
1.6 km/h (1.0 mph) (tap-up function).

CRUISE CONTROL – CRUISE CONTROL SYSTEM

I102366

I102368

I102367

CC–9

(c) Inspect the "- (COAST)" function.
(1) Push the ON-OFF button "on".
(2) Drive at the required speed (40 km/h (25 mph)
or higher).
(3) Push the cruise control main switch to -/SET.
(4) Check that vehicle speed decreases while the
cruise control main switch is pushed to -/SET,
and that the vehicle cruises at the newly set
speed when the switch is released.
(5) Momentarily push the cruise control main switch
to -/SET and then immediately release it. Check
that vehicle speed decreases by approximately
1.6 km/h (1.0 mph) (tap-down function).
(d) Inspect the CANCEL function.
(1) Push the ON-OFF button "on".
(2) Drive at the required speed (40 km/h (25 mph)
or higher).
(3) Push the cruise control main switch to -/SET.
(4) When doing one or more of the following, check
that the cruise control system is canceled and
that the normal driving mode is reset:
• Depressing the brake pedal
• Shifting into any position except D
• Pushing the ON-OFF button "off"
• Pulling the cruise control main switch to
CANCEL
(e) Inspect the RES (RESUME) function.
(1) Push the ON-OFF button "on".
(2) Drive at the required speed (40 km/h (25 mph)
or higher).
(3) Push the cruise control main switch to -/SET.
(4) When doing one or more of the following, check
that the cruise control system is canceled and
that the normal driving mode is reset:
• Depressing the brake pedal
• Shifting into any position except D
• Pulling the cruise control main switch to
CANCEL
(5) After pushing the cruise control main switch to +/
RES at a driving speed of more than 40 km/h (25
mph), check that the vehicle restores the speed
which was maintained before cancellation.

CC

CC–10

CRUISE CONTROL – CRUISE CONTROL 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.
• Insect the fuses and relays related to this system before
inspecting the suspected areas below.
Cruise control system
Symptom

CC

Suspected area
1. Cruise control switch circuit

ON-OFF button cannot be pushed on (CRUISE main
indicator light on combination meter does not come on)

Vehicle speed cannot be set (indicator light on
combination meter comes on when ON-OFF button is
pushed on, but it goes off when vehicle speed is set)

Setting cannot be done (indicator light on combination
meter come on when ON-OFF button is pushed on,
and it remains on while setting)

Cruise control is canceled while driving (CRUISE main
indicator light remains on)

Hunting occurs (speed is not constant)
Setting cannot be canceled (when functions such as
COAST, ACCEL, RESUME, set speed change are
operated with control switch)

See page
CC-23

2. Cruise main indicator light circuit

CC-29

3. Combination meter

-

4. Hybrid vehicle control ECU

-

1. Cruise control switch circuit

CC-23

2. Hybrid vehicle control ECU

-

1. Cruise control switch circuit

CC-23

2. Stop light switch circuit

CC-19

3. Shift position sensor circuit

HV-102

4. Combination meter

-

5. Hybrid vehicle control ECU

-

1. Cruise control switch circuit

CC-23

2. Vehicle speed sensor circuit

CC-15

3. Stop light switch circuit

CC-19

4. Cruise main indicator light circuit

CC-29

5. Hybrid vehicle control ECU

-

1. Vehicle speed sensor circuit

CC-15

2. Hybrid vehicle control ECU

-

1. Cruise control switch circuit

CC-23

2. Hybrid vehicle control ECU

-

CC–11

CRUISE CONTROL – CRUISE CONTROL SYSTEM

TERMINALS OF ECU
1.
H17

CHECK HYBRID VEHICLE CONTROL ECU
H15

H16

H14

I039285E01

(a) Measure the voltage of the connectors.
Symbols (Terminals No.)

Wiring Color

Terminal Description

Condition

Specified Condition

ST1 (H15-2) - GND1
(H14-1)

G - W-B

Stop light signal

Power switch is ON (IG),
depress brake pedal

Below 1 V

Power switch is ON (IG),
release brake pedal

10 to 14 V

Power switch is ON (IG),
depress brake pedal

10 to 14 V

Power switch is ON (IG),
release brake pedal

Below 1 V

Power switch is ON (IG)

10 to 14 V

Power switch is ON (IG),
CANCEL switch is held on

6.6 to 10.1 V

Power switch is ON (IG),
-/SET switch is held on

4.5 to 7.1 V

Power switch is ON (IG),
+/RES switch is held on

2.3 to 4.0 V

Power switch is ON (IG),
ON-OFF button is pushed
on

Below 1 V

Power switch is ON (IG),
slowly turn wheel

Below 1 V to above 5 V

STP (H15-3) - GND1
(H14-1)

CCS (H14-13) - GND1
(H14-1)

SPDI (H14-19) - GND1
(H14-1)

L - W-B

V - W-B

Cruise control main switch
circuit

Vehicle speed input signal

If the result is not as specified, the ECU may have a
malfunction.

CC

CC–12

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DIAGNOSIS SYSTEM

CC

1.

DESCRIPTION
The ECU controls the function of cruise control on this
vehicle. Data of the cruise control or DTC can be read
from DLC3 of the vehicle. When a trouble occurs with
cruise control, check that the CRUISE main indicator
light does not come on but DTC inspection is performed.
Therefore when there seems to be a problem with the
cruise control, use the intelligent tester (with CAN VIM)
or SST to check and troubleshoot it.

2.

CHECK DLC3
The hybrid vehicle control ECU of the vehicle uses ISO
15765-4 for communication. 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. 1)

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 67 Ω

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*

3 MΩ 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*

3 MΩ 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 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 display indicates that a
communication error has occurred, there is a problem
either with the vehicle or with the tester.

CRUISE CONTROL – CRUISE CONTROL SYSTEM

CC–13

• 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.

Intelligent Tester

CAN VIM
DLC3

CC
A082795E04

3.

I039302E01

CHECK INDICATOR
(a) Turn the power switch ON (IG).
(b) Check that the CRUISE main indicator light comes
on when the cruise control main switch ON-OFF
button is pushed on, and that the indicator light goes
off when the ON-OFF button is pushed off.
HINT:
• If there is a problem with the indicator light,
inspect the CRUISE main indicator light circuit
(see page CC-29).
• If a malfunction occurs in the vehicle speed
sensor, stop light switch or other related parts
while driving with cruise control, and the hybrid
vehicle control ECU activates AUTO CANCEL of
the cruise control and then the CRUISE main
indicator light starts to blink, informing the driver
of the malfunction. At the same time, data of the
malfunction is stored as a DTC.

DTC CHECK / CLEAR
1.
Intelligent Tester

CAN VIM
DLC3

2.
A082795E04

CHECK DTC
(a) Using the intelligent tester (with CAN VIM), check
for DTCs.
(1) Connect the intelligent tester (with CAN VIM) to
the DLC3.
(2) Turn the power switch ON (IG).
(3) 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
(a) Using the intelligent tester (with CAN VIM), clear the
DTCs.
(1) Connect the intelligent tester (with CAN VIM) to
the DLC3.
(2) Turn the power switch ON (IG).

CC–14

CRUISE CONTROL – CRUISE CONTROL SYSTEM

(3) Erase the DTCs by following the directions on
the tester screen.
HINT:
Refer to the intelligent tester operator's manual
for further details.

CC

CRUISE CONTROL – CRUISE CONTROL SYSTEM

CC–15

FAIL-SAFE CHART
1.

FAIL-SAFE CHART
If the following conditions are detected while the cruise
control is in operation, the system clears the stored
vehicle speed in the hybrid vehicle control ECU and
cancels the cruise control operation.

Cruise control system
Vehicle Condition

Auto Cancel Condition

Re-operation Condition

CRUISE main indicator light blinks

When either condition below is met:
• There is an open or short in stop light
switch circuit
• Vehicle speed signal changes suddenly

Push cruise control main switch ON-OFF
button "on" again

CRUISE main indicator light blinks

There is a problem with input circuit of stop
light switch circuit

When either condition below is met:
• Indicator light blinks until cruise control
main switch ON-OFF button is pushed on
again
• Constant speed control is prohibited until
the power switch is turned OFF

CRUISE main indicator light turns off

When either condition below is met:
• Vehicle speed is below the low speed limit
(approx. 40 km/h (approx. 25 mph)) while
driving with cruise control on
• Vehicle speed is lower than stored speed
by approx. 16 km/h (approx. 9.9 mph) or
more while driving with cruise control on

Push cruise control main switch to -/RES

CC

CC–16

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DATA LIST / ACTIVE TEST
1.

READ DATA LIST
HINT:
Using the intelligent tester's DATA LIST allows switch,
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 according to the display on the
tester.

CC Hybrid vehicle control system
Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

VEHICLE SPD

Cruise control vehicle speed/
min.: 0 km/h (0 mph), max.: 255
km/h (158 mph)

Actual vehicle speed is displayed

-

MEMORY SPD

Cruise control memorized speed/
min.: 1 km/h (0.6 mph), max.: 255
km/h (158 mph)

Actual vehicle speed is displayed

-

THROTTLE

Request opening angle/ min.: 0%,
max.: 125%

Actual throttle opening angle is
displayed

-

CRUISE CTRL

Cruise control system active
condition/ON or OFF

ON: Cruise control is activated
OFF: Cruise control is
deactivated

-

MAIN SW (MAIN)

CRUISE main switch signal (Main
CPU)/ON or OFF

ON: Cruise control main switch
ON-OFF button is pushed on
OFF: Cruise control main switch
ON-OFF button is pushed off

"3"

MAIN SW (SUB)

CRUISE main switch signal (Sub
CPU)/ON or OFF

ON: Cruise control main switch
ON-OFF button is pushed on
OFF: Cruise control main switch
ON-OFF button is pushed off

"3"

CCS READY M

Cruise control system standby
condition (Main CPU)/ON or OFF

ON ←→ OFF: Switching each
time ON-OFF button is pushed

"1"

CCS READY S

Cruise control system standby
condition (Sub CPU)/ON or OFF

ON ←→ OFF: Switching each
time ON-OFF button is pushed

"1"

CCS INDICATOR M

Cruise indicator signal (Main
CPU)/ON or OFF

ON: CRUISE main indicator light
is on
OFF: CRUISE main indicator light
is off

"2"

CCS INDICATOR S

Cruise indicator signal (Sub
CPU)/ON or OFF

ON: CRUISE main indicator light
is on
OFF: CRUISE main indicator light
is off

"2"

CANCEL SW

CANCEL switch signal/ON or
OFF

ON: Cruise control main switch is
pulled to CANCEL
OFF: Cruise control main switch
is not pulled to CANCEL

-

SET/COAST SW

-/SET switch signal/ON or OFF

ON: Cruise control main switch is
pushed to -/SET
OFF: Cruise control main switch
is not pushed to -/SET

-

RES/ACC SW

+/RES switch signal/ON or OFF

ON: Cruise control main switch is
pushed to +/RES
OFF: Cruise control main switch
is not pushed to +/RES

-

STP LIGHT SW1 M

Stop light switch signal (Main
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

CC–17

CRUISE CONTROL – CRUISE CONTROL SYSTEM
Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

STP LIGHT SW2 S

Stop light switch signal (Sub
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

STP LIGHT SW1 S

Stop light switch signal (Sub
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

SHIFT D POS

Shift lever position sensor signal
(D position)/ON or OFF

ON: Shift position is D
OFF: Shift position is not D

-

VEHICLE SPD CHG

Vehicle speed sudden change/
ON or OFF

ON: Changed
OFF: Not changing

-

HINT:
"3" is OK but "1" is NG → Hybrid vehicle control
ECU failure
"1" is OK but "2" is NG → DTC output or hybrid
vehicle control ECU failure
"3" is OK but the CRUISE main indicator light does
not turn on → CRUISE main indicator light , wire
harness, or hybrid vehicle control ECU failure

CC

CC–18

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a malfunction code is displayed during the DTC check,
check the circuit indicated by the DTC. For details of each
code, refer to the respective "DTC No." in the DTC chart.
Cruise control system

CC

DTC No.

Detection Item

P0500

Vehicle Speed Sensor "A"

- Vehicle speed sensor
- Vehicle speed sensor circuit
- Combination meter
- Hybrid vehicle control ECU

Trouble Area

See page
CC-15

P0571

Brake Switch "A" Circuit

- Stop light switch
- Stop light switch circuit
- Hybrid vehicle control ECU

CC-19

P0607

Control Module Performance

- Hybrid vehicle control ECU

CC-22

HINT:
DTC P0607 indicates an internal abnormality of the hybrid
vehicle control ECU. If this DTC is output, replace the hybrid
vehicle control ECU.

CC–19

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DTC

P0500

Vehicle Speed Sensor "A"

DESCRIPTION
The speed sensor for the skid control ECU detects wheel speed and sends appropriate signals to the skid
control ECU.
The skid control ECU converts these wheel speed signals into 4-pulse signals and outputs them to the
hybrid vehicle control ECU via the combination meter.
The hybrid vehicle control ECU determines vehicle speed based on the frequency of these pulse signals.

CC
4-Pulse

From
Speed Sensor

4-Pulse

Hybrid Vehicle
Control ECU

Skid Control
ECU

Combination Meter
I102164E01

DTC No.

DTC Detection Condition

Trouble Area

P0500

This trouble code is output when a signal from
vehicle speed sensor is cut for 1.4 seconds or
more while cruise control is in operation

•
•
•
•

Vehicle speed sensor
Vehicle speed sensor circuit
Combination meter
Hybrid vehicle control ECU

WIRING DIAGRAM

Combination Meter

Hybrid Vehicle Control ECU

SPDI

E115290E15

CC–20

CRUISE CONTROL – CRUISE CONTROL SYSTEM

INSPECTION PROCEDURE

1

CHECK OPERATION OF SPEEDOMETER
(a) Drive the vehicle and check if the function of the
speedometer in the combination meter is normal.
OK:
Actual vehicle speed and the speed indicated on
the speedometer are the same.
HINT:
The vehicle speed sensor is functioning normally when
the indication on the speedometer is normal.

CC

NG

GO TO SPEEDOMETER CIRCUIT

OK

2

READ VALUE OF INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)
(a) Check the DATA LIST for proper functioning of the
vehicle speed signal.

Hybrid vehicle control ECU
Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

VEHICLE SPD

Cruise control vehicle speed/
min.: 0 km/h (0 mph), max.: 255
km/h (158 mph)

Actual vehicle speed is
displayed

-

OK:
The speed displayed on the tester screen is almost the
same as the speed the one indicated on the
combination meter.
OK
NG

PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

CRUISE CONTROL – CRUISE CONTROL SYSTEM

3

INSPECT HYBRID VEHICLE CONTROL ECU (SPD VOLTAGE)
(a)
(b)
(c)
(d)

H14

SPDI

Turn the power switch ON (IG).
Move the shift lever to neutral.
Jack up the vehicle.
Measure the voltage of the connector.
Standard voltage

Tester Connection

Specified Condition

SPDI (H14-19) - Body ground

Waveform appears

HINT:
The output voltage fluctuates up and down, similarly to
the diagram on the left, when the wheel is turned slowly.
OK

REPLACE HYBRID VEHICLE CONTROL ECU

4.5 to
5.5 V

0V

Turn Wheel
I102399E01

NG

4

CC–21

CHECK WIRE HARNESS (ECU - METER)
(a) Disconnect the H14 ECU connector.
(b) Disconnect the C10 meter connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side
ECM
E14

Tester Connection

Specified Condition

SPDI (H14-19) - C10-13

Below 1 Ω

NG
SPDI
Combination Meter
C10

I102400E01

REPAIR OR REPLACE HARNESS AND
CONNECTOR

CC

CC–22

CRUISE CONTROL – CRUISE CONTROL SYSTEM

OK
REPLACE COMBINATION METER ASSEMBLY

CC

CC–23

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DTC

P0571

Brake Switch "A" Circuit

DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to the hybrid vehicle control ECU.
Receiving the signal, the hybrid vehicle control ECU cancels the cruise control. Even if there is a
malfunction in the stop light signal circuit while the cruise control is in operation, normal driving is
maintained due to fail-safe function.
Cruise control is canceled when positive battery voltage is applied to terminal STP.
When the brake pedal is depressed, positive voltage is applied to terminal STP of the hybrid vehicle
control ECU through the STOP fuse and the stop light switch, and the hybrid vehicle control ECU cancels
the cruise control.
When the brake pedal is released, positive voltage is applied to terminal ST1- of the hybrid vehicle control
ECU through the IGN fuse and the stop light switch, and the hybrid vehicle control ECU operates the
cruise control.
HINT:
Inspect the fuses and relays before confirming the suspected areas which are shown in the table below.
DTC No.

DTC Detection Condition

Trouble Area

P0571

Trouble code is output when voltages of
terminals ST1- and STP of the hybrid vehicle
control ECU are both below 1 V for 0.5
seconds or more

•
•
•

Stop light switch
Stop light switch circuit
Hybrid vehicle control ECU

WIRING DIAGRAM
Hybrid Vehicle Control ECU
Stop Light Switch
DC/DC

STOP
STP
IG2

P/I

MAIN

AM2

IGN

ST1-

to Power Source
Control ECU

E124731E01

CC

CC–24

CRUISE CONTROL – CRUISE CONTROL SYSTEM

INSPECTION PROCEDURE

1

INSPECT STOP LIGHT SWITCH OPERATION
(a) Check that the stop light turns on when the brake pedal
is depressed, and goes off when the brake pedal is
released.
OK:
The stop light turns on/turns off normally.
HINT:
The stop light uses the circuit on the terminal STP side of the
hybrid vehicle control ECU.

CC

NG

GO TO STOP LIGHT SWITCH CIRCUIT

OK

2

READ VALUE OF INTELLIGENT TESTER (STOP LIGHT SWITCH)
(a) Check the DATA LIST for proper functioning of the stop
light switch.

ECM
Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

STP LIGHT SW1 M

Stop light switch signal (Main
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

STP LIGHT SW1 S

Stop light switch signal (Sub
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

STP LIGHT SW2 S

Stop light switch signal (Sub
CPU)/ON or OFF

ON: Brake pedal is depressed
OFF: Brake pedal is released

-

OK:
Display changes according to brake pedal
operation described in above table.
OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

3

INSPECT STOP LIGHT SWITCH ASSEMBLY

2

1

(a) Remove the stop light switch.
(b) Measure the resistance of the switch.
Standard resistance
Tester Connection
3-4

Pushed

Specified Condition

Not pushed

Below 1 Ω

Pushed

10 kΩ or higher

Not Pushed
4

3
I004062E05

OK

Switch Condition

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

CC–25

CRUISE CONTROL – CRUISE CONTROL SYSTEM

4

CHECK WIRE HARNESS (SWITCH - BATTERY)
(a) Disconnect the S16 switch connector.
(b) Measure the voltage of the wire harness side connector.
Standard resistance

Wire Harness Side
S16

Tester Connection

Specified Condition

S16-3 - Body ground

10 to 14 V

NG

REPAIR OR REPLACE HARNESS AND
CONNECTOR

CC

E110511E06

OK

5

CHECK HYBRID VEHICLE CONTROL ECU
(a)
(b)
(c)
(d)

Wire Harness Side

Reconnect the S16 switch connector.
Disconnect the H15 ECU connector.
Turn the power switch ON (IG).
Measure the voltage of the wire harness side connector.
Standard resistance

Tester Connection

Switch Connection

Specified Condition

STP (H15-3) - Body
ground

Brake pedal is
depressed

10 to 14 V

ST1- (H15-2) - Body
ground

H15

NG

STP

ST1I039294E01

OK
REPLACE HYBRID VEHICLE CONTROL ECU

Brake pedal is released

Below 1 V

Brake pedal is released

10 to 14 V

Brake pedal is
depressed

Below 1 V

REPAIR OR REPLACE HARNESS AND
CONNECTOR

CC–26

CRUISE CONTROL – CRUISE CONTROL SYSTEM

DTC

P0607

Control Module Performance

DESCRIPTION
DTC P0607 is stored when an internal abnormality of the hybrid vehicle control ECU is detected.

CC

DTC No.

DTC Detection Condition

Trouble Area

P0607

Hybrid vehicle control ECU has a supervisory
CPU and a control CPU. Trouble code is
output when input STP signals to each CPU
are different for 0.15 seconds or more.

Hybrid vehicle control ECU

HINT:
If DTC P0607 is detected while the cruise control is in operation, the system clears the stored vehicle
speed in the hybrid vehicle control ECU and cancels the cruise control operation. At the same time, the
CRUISE main indicator light blinks to inform the driver of the malfunction.
When this trouble code is detected, fail-safe remains on until the power switch is turned OFF.

INSPECTION PROCEDURE

1

CHECK DTC
(a) Clear the DTC (see page CC-12).
(b) Check the DTC (see page CC-12).
OK:
DTC is not output.
NG

OK
END

REPLACE HYBRID VEHICLE CONTROL ECU

CRUISE CONTROL – CRUISE CONTROL SYSTEM

CC–27

Cruise Control Switch Circuit
DESCRIPTION
This circuit sends signals to the ECU depending on the cruise control main switch condition. The battery
supplies positive (+) battery voltage to the cruise control main switch. Then terminal CCS of the ECU
receives the voltage according to the switch condition.

WIRING DIAGRAM

CC
Cruise Control Main Switch
Hybrid Vehicle
Control ECU
Spiral Cable

CCS
CCS

CANCEL

-SET

+RES

ON-OFF

ECC

E110505E02

CC–28

CRUISE CONTROL – CRUISE CONTROL SYSTEM

INSPECTION PROCEDURE

1

READ VALUE OF INTELLIGENT TESTER (CRUISE CONTROL MAIN SWITCH)
(a) Check the DATA LIST for proper functioning of the cruise
control main switch.

Hybrid vehicle control ECU

CC

Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

MAIN SW (MAIN)

Cruise control main switch signal
(Main CPU) / ON or OFF

ON: Cruise control main switch
ON-OFF button is pushed on
OFF: Cruise control main switch
ON-OFF button is pushed off

-

MAIN SW (SUB)

Cruise control main switch signal
(Sub CPU) / ON or OFF

ON: Cruise control main switch
ON-OFF button is pushed on
OFF: Cruise control main switch
ON-OFF button is pushed off

-

CANCEL SW

CANCEL switch signal / ON or
OFF

ON: CANCEL switch ON
OFF: CANCEL switch OFF

-

SET/COAST SW

-/SET switch signal / ON or OFF

ON: -/SET switch ON
OFF: -/SET switch OFF

-

RES/ACC Switch

+/RES switch signal / ON or OFF

ON: +/RES switch ON
OFF: +/RES switch OFF

-

OK:
When cruise control main switch operation is
performed, the results will be same as above.
OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

2

CHECK HYBRID VEHICLE CONTROL ECU
(a) Measure the voltage of the connector.
Standard voltage
Tester Connection

Switch Condition

Specified Condition

H14-13 (CCS) - Body
ground

Cruise control main
switch off

10 to 14 V

+/RES

6.6 to 10.1 V

-/SET

4.5 to 7.1 V

CANCEL

2.3 to 4.0 V

Cruise control main
switch on

Below 1 V

H14

OK

CCS

I102360E01

PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

CC–29

CRUISE CONTROL – CRUISE CONTROL SYSTEM

NG

3

INSPECT CRUISE CONTROL MAIN SWITCH
(a) Disconnect the H14 ECU connector.
(b) Measure the resistance of the wire harness side
connector.
Standard resistance

Wire Harness Side

Tester Connection

Switch Condition

H14-13 (CCS) - Body
ground

Neutral

10 kΩ or higher

+/RES

210 to 270 Ω

H14

OK

Specified Condition

-/SET

560 to 700 Ω

CANCEL

1,380 to 1,700 Ω

Cruise control main
switch on

Below 1 Ω

REPLACE HYBRID VEHICLE CONTROL ECU

CCS

I039293E01

NG

4

INSPECT CRUISE CONTROL MAIN SWITCH
(a) Measure the resistance of the switch.
Standard resistance
+RES

Tester Connection

Switch Condition

Specified Condition

1-3

+/RES

210 to 270 Ω

ON-OFF

CANCEL

-SET

NG

I102362E01

-/SET

560 to 700 Ω

CANCEL

1,380 to 1,700 Ω

Cruise control main
switch on

Below 1 Ω

Cruise control main
switch off

10 kΩ or higher

REPLACE CRUISE CONTROL MAIN SWITCH

CC

CC–30

CRUISE CONTROL – CRUISE CONTROL SYSTEM

OK

5

REPLACE HYBRID VEHICLE CONTROL ECU
(a) Disconnect the spiral cable connector.
(b) Measure the resistance of the wire harness side
connectors.
Standard resistance

Spiral Cable Side
A

Tester Connection

Specified Condition

A-3 - B-1

Below 1 Ω

A-4 - B-3

CC

NG
Cruise Control Main Switch Side
B

I102363E01

OK

REPAIR OR REPLACE HARNESS AND
CONNECTOR

CRUISE CONTROL – CRUISE CONTROL SYSTEM

6

CC–31

INSPECT SPIRAL CABLE SUB-ASSEMBLY
(a) Disconnect the spiral cable connector.
(b) Measure the resistance of the cable.
Standard resistance
Switch Side

Tester Connection

Specified Condition

A-3 - C12-1

Below 1 Ω

A-4 - C12-2

C12

NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY

CC

ECU Side

I102364E01

OK

CC–32

7

CRUISE CONTROL – CRUISE CONTROL SYSTEM

CHECK WIRE HARNESS (SPIRAL CABLE - ECU AND BODY GROUND)
(a) Disconnect the C12 cable connector.
(b) Disconnect the H14 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side
Spiral Cable

C12

Tester Connection

Specified Condition

C12-1 - H14-13 (CCS)

Below 1 Ω

C12-2 - Body ground

CC

NG

Hybrid Vehicle Control ECU

REPAIR OR REPLACE HARNESS AND
CONNECTOR

H14

CCS
I102402E01

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

CC–33

CRUISE CONTROL – CRUISE CONTROL SYSTEM

Cruise Main Indicator Light Circuit
DESCRIPTION
The hybrid vehicle control ECU outputs the cruise control operation status to the CRUISE main indicator
light on the combination meter.
The CRUISE main indicator light circuit uses CAN and BEAN for communication. If there are any
malfunctions in this circuit, check for DTCs in the CAN communication system and the multiplex
communication system.

INSPECTION PROCEDURE

1

READ VALUE OF INTELLIGENT TESTER (CRUISE MAIN INDICATOR LIGHT)
(a) Check the DATA LIST for proper functioning of the
CRUISE main indicator light.

Hybrid vehicle control ECU
Item

Measurement Item / Display
(Range)

Normal Condition

Diagnostic Note

CCS INDICATOR M

Cruise indicator signal (Main
CPU) / ON or OFF

ON: CRUISE main indicator is
ON
OFF: CRUISE main indicator is
OFF

-

CCS INDICATOR S

Cruise indicator signal (Sub
CPU) / ON or OFF

ON: CRUISE main indicator is
ON
OFF: CRUISE main indicator is
OFF

-

OK:
Cruise control indicator light illuminates.
Result
Result

Proceed to

OK

A

NG (ON / OFF operates only on tester)
(see page ME-11)

B

NG (ON / OFF does not operate only on tester)

C

B

GO TO METER / GAUGE SYSTEM

C

REPLACE HYBRID VEHICLE CONTROL ECU

A
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

CC

CC–30

CRUISE CONTROL – CRUISE CONTROL MAIN SWITCH

CRUISE CONTROL MAIN SWITCH
CRUISE CONTROL SYSTEM

COMPONENTS

“TORX” SCREW
8.8 (90, 78 in.*lbf)

“TORX” SCREW
8.8 (90, 78 in.*lbf)

CC

CRUISE CONTROL MAIN SWITCH

50 (510, 37)

STEERING WHEEL ASSEMBLY
NO. 2 STEERING WHEEL
COVER LOWER

NO. 3 STEERING WHEEL COVER LOWER

STEERING PAD ASSEMBLY

N*m (kgf*cm, ft.*lbf) : Specified torque

B131356E01

CRUISE CONTROL – CRUISE CONTROL MAIN SWITCH

CC–31

REMOVAL

B078424E02

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. 2 STEERING WHEEL COVER LOWER

3.

REMOVE NO. 3 STEERING WHEEL COVER LOWER

4.

REMOVE STEERING PAD ASSEMBLY (See page RS268)

5.

REMOVE STEERING WHEEL ASSEMBLY (See page
SR-8)

6.

REMOVE CRUISE CONTROL MAIN SWITCH
(a) Disconnect the connector.
(b) Remove the 2 screws and switch.

CC

CC–32

CRUISE CONTROL – CRUISE CONTROL MAIN SWITCH

INSPECTION
1.
+RES

INSPECT CRUISE CONTROL MAIN SWITCH
(a) Measure the resistance of the switch.
Standard resistance

Tester Connection

ON-OFF

CANCEL

-SET

1-3

Switch Condition

Specified Condition

+RES

210 to 270 Ω

-SET

560 to 700 Ω

CANCEL

1,380 to 1,700 Ω

ON-OFF button is on

Below 1 Ω

ON-OFF button is off

10 kΩ or higher

If the result is not as specified, replace the switch
assembly.

CC

I102362E01

CRUISE CONTROL – CRUISE CONTROL MAIN SWITCH

CC–33

INSTALLATION
1.

INSTALL CRUISE CONTROL MAIN SWITCH
(a) Install the switch with the 2 screws.
(b) Connect the connector.

2.

INSTALL STEERING WHEEL ASSEMBLY (See page
SR-15)

3.

INSTALL STEERING PAD ASSEMBLY (See page RS269)

4.

INSTALL NO. 2 STEERING WHEEL COVER LOWER

5.

INSTALL NO. 3 STEERING WHEEL COVER LOWER

6.

CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL

7.

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.

8.

CHECK SRS WARNING LIGHT
(a) Check the SRS warning light (see page RS-31).

CC