TOYOTA RAV4 2006 Service Repair Manual

CC–22CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, check
the trouble areas listed for that code in the table below and
proceed to the appropriate page.
Cruise control system
Cruise control system (w/ VSC)
DTC No. Detection Item Trouble Area See page
P0500/21 Vehicle Speed Sensor "A" - Combination meter
- Vehicle speed sensor
- Vehicle speed sensor circuit
- ECMCC-20
P0503/23 Vehicle Speed Sensor Circuit - Combination meter
- Vehicle speed sensor
- Vehicle speed sensor circuit
- ECMCC-20
P0571/52 Stop Light Switch Circuit - Stop light switch
- BRK relay circuit*
- Wire harness
- ECMCC-21
P0607/54 Input Signal Circuit Abnormal - ECMCC-25
DTC No. Detection Item Trouble Area See page
P1578/69 Brake System Malfunction - VSC systemCC-26
P1630/64 Communication Error from Skid
Control ECU to ECM- Communication circuit
- Skid control
- ECMCC-27
P1631/65 Communication Error from ECM
to Skid Control ECU- Communication circuit
- ECM
- Skid controlCC-28
U0100/78 Communication Stop from ECM
to Distance Control ECU, VSC- Communication circuit
- ECM
- Skid controlCC-28
U0122/82 Communication Stop from VSC to
ECM- Communication circuit
- Skid control
- ECMCC-27

CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–23
CC
DESCRIPTION
Refer to the SFI system (see page ES-224).
WIRING DIAGRAM
Refer to the SFI system (see page ES-224).
INSPECTION PROCEDURE
Refer to the SFI system (see page ES-224).
DTC P0500/21 Vehicle Speed Sensor "A"
DTC P0503/23 Vehicle Speed Sensor Circuit
DTC No. DTC Detection Condition Trouble Area
P0500/21
P0503/23No vehicle speed sensor signal to ECM under
conditions (a) and (b) (2 trip detection logic):
(a) Cruise control system is operating
(b) Vehicle is being driven• Combination meter
• Vehicle speed sensor
• Vehicle speed sensor circuit
•ECM

CC–24CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
DESCRIPTION
While driving with the cruise control, if the ECM detects that the brake pedal is depressed, the cruise
control operation will be canceled. The stop light switch sends brake pedal status signals to the ECM.
When the brake pedal is not depressed, terminal ST1- is equal to the positive (+) battery voltage and
terminal STP is below 1 V. When the brake pedal is depressed, the ECM cancels cruise control operation.
The ECM outputs this DTC when the voltage of terminals ST1- and STP are both below 1 V for 0.5
seconds or more at the same time. The fail-safe function operates to enable normal driving even if there is
a malfunction in the stop light signal circuit.
HINT:
*: w/ Vehicle stability control system
WIRING DIAGRAM
DTC P0571/52 Stop Light Switch Circuit
DTC No. DTC Detection Condition Trouble Area
P0571/52 ECM detects malfunction of stop light switch
circuit under both of following conditions:
• Voltage of terminal STP is less than 1 V
for 0.5 seconds or more
• Voltage of terminal ST1- is less than 1 V
for 0.5 seconds or more• Stop light switch
• BRK relay circuit*
• Wire harness
•ECM
E124257E01

CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–25
CC
INSPECTION PROCEDURE
(a) Check the DATA LIST for proper functioning of the stop
light switch.
ECM
OK:
Display changes according to brake pedal
operation described in above table.
NG
OK
(a) Remove the STOP and IGN fuses from the instrument
panel junction block.
(b) Remove the IG2 fuse from the engine room No. 1 relay
block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG
OK
(a) Remove the IG2 relay from the instrument panel junction
block.
(b) Measure the resistance of the relay.
Standard resistance
NG
OK
1READ VALUE OF INTELLIGENT TESTER (STOP LIGHT SWITCH)
Item Measurement Item / Display
(Range) Normal Condition Diagnostic Note
ST LIGHT SW M Stop light switch signal (Main
CPU) / ON or OFF ON: Brake pedal is depressed
OFF: Brake pedal is released -
REPLACE ECM
2INSPECT FUSE (STOP, IGN, IG2)
REPLACE FUSE
3INSPECT IG2 RELAY
I045791E02
Tester Connection Specified Condition
3 - 5 10 k
or higher
Below 1
(when battery voltage is applied to
terminals 1 and 2)
REPLACE IG2 RELAY

CC–26CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
(a) Remove the stop light switch.
(b) Measure the resistance of the switch.
Standard resistance
NG
OK
(a) Disconnect the A3 switch connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage
NG
OK
(a) Disconnect the A9 ECM connector.
(b) Turn the ignition switch ON.
(c) Measure the voltage of the wire harness side connector.
Standard voltage
NG
4INSPECT STOP LIGHT SWITCH
I013683E14
Tester Connection Switch Condition Specified Condition
1 - 2 Not pushed Below 1
3 - 4 Pushed
1 - 2 Pushed 10 k
or higher
3 - 4 Not pushed
REPLACE STOP LIGHT SWITCH
5CHECK WIRE HARNESS (SWITCH - BATTERY)
E110511E05
Tester Connection Switch Condition Specified Condition
A3-3 - Body ground Always 10 to 14 V
A3-2 - Body ground Ignition switch ON
REPAIR OR REPLACE HARNESS AND
CONNECTOR
6CHECK WIRE HARNESS (ECM - BATTERY)
E124667E01
Tester Connection Switch Condition Specified Condition
A9-35 (STP) - Body
ground Depressed 10 to 14 V
A9-36 (ST1-) - Body
ground Released
A9-35 (STP) - Body
ground Released Below 1 V
A9-36 (ST1-) - Body
ground Depressed
REPAIR OR REPLACE HARNESS AND
CONNECTOR

CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–27
CC
OK
REPLACE ECM

CC–28CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
DESCRIPTION
This DTC expresses the internal abnormalities of the ECM.
INSPECTION PROCEDURE
(a) Clear the DTC (see page CC-15).
(b) Check for DTC (see page CC-15).
OK:
DTC is not output.
NG
OK
DTC P0607/54 Input Signal Circuit Abnormal
DTC No. DTC Detection Condition Trouble Area
P0607/54 When either of following conditions is met:
• Cruise control input signal abnormal
• Stop light switch input signal abnormalECM
1CHECK FOR DTC
REPLACE ECM
END

CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–29
CC
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is
output.
INSPECTION PROCEDURE
HINT:
This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication
circuit, one or more DTCs in the CAN communication system are output.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING
(see page BC-20).
DTC P1578/69 Brake System Malfunction
DTC No. DTC Detection Condition Trouble Area
P1578/69 ECM receives a brake system error signal for
0.2 seconds or more while cruise control is in
operationVSC system
1CHECK BRAKE SYSTEM

CC–30CRUISE CONTROL – CRUISE CONTROL SYSTEM
CC
DESCRIPTION
The skid control ECU sends signals such as cruise control cancel demand signals and brake operation
demand from ECM response signals to the ECM when the cruise control system is in operation.
INSPECTION PROCEDURE
HINT:
This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication
circuit, one or more DTCs in the CAN communication system are output.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING
(see page CA-8).
DTC P1630/64Communication Error from Skid Control ECU to
ECM
DTC U0122/82 Communication Stop from VSC to ECM
DTC No. DTC Detection Condition Trouble Area
P1630/64 While cruise control is either preparing for
operation or operating, if communication data
from skid control ECU is logically inconsistent
for a certain amount of time, ECM records this
logical error code• Communication circuit
• Skid control ECU
•ECM
U0122/82 While cruise control is either preparing for
operation or operating, if communication data
from skid control ECU is invalid for a certain
amount of time, ECM records communication
cut off code• Communication circuit
• Skid control ECU
•ECM
1CHECK CAN COMMUNICATION SYSTEM

CRUISE CONTROL – CRUISE CONTROL SYSTEMCC–31
CC
DESCRIPTION
Therefore, if the skid control ECU detects a communication error from the ECM, it sends a malfunction
signal back to the ECM.
INSPECTION PROCEDURE
HINT:
This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication
circuit, one or more DTCs in the CAN communication system are output.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING
(see page CA-8).
DTC P1631/65Communication Error from ECM to Skid Con-
trol ECU
DTC U0100/78Communication Stop from ECM to Distance
Control ECU, VSC
DTC No. DTC Detection Condition Trouble Area
P1631/65 While the cruise control is either preparing for
operation or operating, if the ECM
continuously receives a logical error signal
from the skid control ECU for a certain
amount of time, the ECM records this logical
error code• Communication circuit
•ECM
• Skid control ECU
U0100/78 While the cruise control is either preparing for
operation or operating, if the ECM
continuously receives a communication cut off
signal from the skid control ECU for a certain
amount of time, the ECM records this
communication cut off code• Communication circuit
•ECM
• Skid control ECU
1CHECK CAN COMMUNICATION SYSTEM