WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
When the vehicle is stopped, mode switching may be unavailable due to the phase of the transfer assembly powertrain. There is no malfunction if mode switching is available after the vehicle is moved.
PROCEDURE
CONFIRM PROBLEM SYMPTOM
Confirm the problem symptoms.
| Result | Proceed to |
|---|---|
| The 4LO indicator light continues to blink after operation of the transfer position switch (combination switch assembly)*1 The 4LO indicator light continues to blink after operation of the transfer position switch*2, *3 |
A |
| The center differential lock indicator light continues to blink after operation of the center differential lock switch (combination switch assembly)*1*4 The center differential lock indicator light continues to blink after operation of the center differential lock switch (No. 2 combination switch assembly)*2*4 The center differential lock indicator light continues to blink after operation of the center differential lock switch*2*5 The center differential lock indicator light continues to blink after operation of the transfer position switch*3 |
B |
*1: for 1GR-FE, 1KD-FTV, 1GD-FTV w/ Combination Switch
*2: for 1GR-FE, 1KD-FTV, 1GD-FTV w/o Combination Switch
*3: for 2TR-FE, 5L-E
*4: for Automatic Transmission
*5: for Manual Transmission
Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
| B |
|
INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (CENTER DIFFERENTIAL LOCK SHIFT MOTOR) Click here |
| A |
|
INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (HIGH-LOW TRANSFER SHIFT MOTOR)
| *a | Component without harness connected (Transfer Shift Actuator Assembly) |
Disconnect the C43 transfer shift actuator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY (HIGH-LOW TRANSFER SHIFT MOTOR)
Disconnect the G54 4 wheel drive control ECU connector.
Disconnect the C43 transfer shift actuator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY (HIGH-LOW TRANSFER LIMIT SWITCH)
Disconnect the G53 4 wheel drive control ECU connector.
Disconnect the C43 transfer shift actuator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (HIGH -LOW TRANSFER LIMIT SWITCH)
Turn the ignition switch off.
Remove the transfer shift actuator assembly Click here.
Check the high-low transfer limit switch of the transfer shift actuator assembly Click here.
| OK |
|---|
| The high-low transfer limit switch of the transfer shift actuator assembly is normaly. |
| OK |
|
REPLACE 4 WHEEL DRIVE CONTROL ECU Click here |
| NG |
|
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here |
INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (CENTER DIFFERENTIAL LOCK SHIFT MOTOR)
| *a | Component without harness connected (Transfer Shift Actuator Assembly) |
Disconnect the C43 transfer shift actuator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY (CENTER DIFFERENTIAL LOCK SHIFT MOTOR))
Disconnect the G54 4 wheel drive control ECU connector.
Disconnect the C43 transfer shift actuator assembly connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER SHIFT ACTUATOR ASSEMBLY (DIFFERENTIAL LOCK LIMIT SWITCH AND DETECTION SWITCH))
Disconnect the G53 4 wheel drive control ECU connector.
Disconnect the C43 transfer shift actuator assembly connector.
for Hydraulic Brake Booster:
Disconnect the A7 skid control ECU (master cylinder solenoid) connector.
for Vacuum Brake Booster:
Disconnect the A6 skid control ECU (brake actuator assembly) connector.
for 2TR-FE (Automatic Transmission):
Disconnect the G181 ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (CENTER DIFFERENTIAL LOCK LIMIT SWITCH AND DETECTION SWITCH)
Turn the ignition switch off.
Remove the transfer shift actuator assembly Click here.
Check the center differential lock limit switch and center differential lock detection switch of the transfer shift actuator assembly Click here.
| OK |
|---|
| The center differential lock limit switch and center differential lock detection switch of the transfer shift actuator assembly is normaly. |
| OK |
|
REPLACE 4 WHEEL DRIVE CONTROL ECU Click here |
| NG |
|
REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY Click here |