WIRING DIAGRAM
PROCEDURE
1. |
CHECK REAR DIFFERENTIAL LOCK INDICATOR LIGHT |
(a) Turn the ignition switch to ON.
(b) for 4WD:
Finish switching to L4.
(c) Check the rear differential lock indicator light.
(d) Press the differential lock switch.
(e) After 60 seconds, check the rear differential lock indicator light.
Result
Result |
Proceed to |
---|---|
Rear differential lock indicator light blinks or illuminates |
A |
Rear differential lock indicator light remains off regardless of switch operation |
B |
Rear differential lock indicator light remains illuminated regardless of switch operation |
C |
Rear differential lock indicator light rapidly blinks |
D |
A | ![]() |
END |
C | ![]() |
GO TO STEP 8 |
D | ![]() |
GO TO DTC P17CC |
|
2. |
CHECK CAN COMMUNICATION LINE |
(a) Select "Bus Check" from the System Selection Menu screen, and follow the
prompts on the screen to inspect the CAN Bus (See page
).
OK:
"Bus Check" indicates no malfunctions in CAN communication.
NG | ![]() |
CHECK CAN COMMUNICATION SYSTEM |
|
3. |
READ VALUE USING TECHSTREAM (REAR DIFFERENTIAL LOCK SWITCH CONTROL SW (R)) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the Techstream on.
(d) Turn the ignition switch to ON.
(e) Enter the following menus: Powertrain / Four Wheel Drive / Data List.
(f) According to the display on the Techstream, read the Data List.
Four Wheel Drive
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Rear Differential Lock Control SW (R) |
Differential lock switch status (differential lock switch input signal of R terminal on ECU side)/ ON or OFF |
ON: Switch pressed and held OFF: Switch not pressed |
- |
OK:
Display changes according to differential lock switch operation.
NG | ![]() |
GO TO STEP 5 |
|
4. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Turn the ignition switch off.
(b) Perform Active Test of the combination meter assembly using the Techstream.
(c) Check the combination meter assembly.
OK:
The rear differential lock indicator light turns on or off in accordance with the Techstream.
OK | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
NG | ![]() |
CHECK METER / GAUGE SYSTEM |
5. |
INSPECT DIFFERENTIAL LOCK SWITCH |
(a) Disconnect the G13 differential lock switch connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE DIFFERENTIAL LOCK SWITCH |
|
6. |
INSPECT ROOF CONSOLE BOX ASSEMBLY |
(a) Remove the roof console box assembly.
*a |
Component without harness connected (Roof Console Box Assembly) |
- |
- |
(b) Measure the resistance according the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R44-6 (B) - 6 (B) |
Always |
Below 1 Ω |
R44-12 (GND) - 3 (E) |
Always |
Below 1 Ω |
Result |
Proceed to |
---|---|
OK |
A |
NG (for Double Cab) |
B |
NG (for Access Cab) |
C |
B | ![]() |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
C | ![]() |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
|
7. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY) |
(a) Disconnect the F13 4 wheel drive control ECU connector.
(b) Disconnect the R44 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F13-15 (R) - R44-6 (B) |
Always |
Below 1 Ω |
R44-12 (GND) - Body ground |
Always |
Below 1 Ω |
OK | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
8. |
CHECK CAN COMMUNICATION LINE |
(a) Select "Bus Check" from the System Selection Menu screen, and follow the
prompts on the screen to inspect the CAN Bus (See page
).
OK:
"Bus Check" indicates no malfunctions in CAN communication.
NG | ![]() |
CHECK CAN COMMUNICATION SYSTEM |
|
9. |
READ VALUE USING TECHSTREAM (REAR DIFFERENTIAL LOCK INDICATOR REQUEST) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the Techstream on.
(d) Turn the ignition switch to ON.
(e) Enter the following menus: Powertrain / Four Wheel Drive / Data List.
(f) According to the display on the Techstream, read the Data List.
Four Wheel Drive
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Rear Differential Lock Indicator Request |
Rear differential lock indicator light request/ Blink4*, Blink3, Blink2, Blink1, ON or OFF |
|
*: Item not supported, therefore not displayed |
(g) for 4WD:
Finish switching to L4.
(h) Turn the differential lock switch on and off several times and check the Techstream display condition of the rear differential lock indicator light.
Result
Result |
Proceed to |
---|---|
Data List continues to display ON even when differential lock switch is operated |
A |
Data List display changes according to differential lock switch operation |
B |
A | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
B | ![]() |
CHECK METER / GAUGE SYSTEM |
Open in Stop Light Switch Circuit (C1425)
DESCRIPTION
The skid control ECU (master cylinder solenoid) inputs stop light switch signals
and the brake operation condition.
The skid control ECU (master cylinder solenoid) has an open detection circuit,
which outputs this DTC when detecting an open circuit in the stop light input line
or ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC (for TIRE PRESSURE WARNING ECU AND RECEIVER) (USING TECHSTREAM)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monito ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
CAUTION:
Some of these service operations affect the SRS airbag system. Read
the precautionary notices concerning the SRS airbag system before servicing
(See page ).
If the side airbag was deployed, replace the front seat assembly with
...