Diagnosis Procedure
- CONFIRM THE SYMPTOM
Confirm 4WD shift indicator lamp and 4LO indicator lamp turn on when ignition switch is turned to ON.
Do 4WD shift indicator lamp and 4LO indicator lamp turn on?
YES: GO TO 2.
NO: Refer to "DIAGNOSIS PROCEDURE ".
- CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 3.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 4.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR NEUTRAL-4LO SWITCH
Perform trouble diagnosis for neutral-4LO switch system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 5.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR ATP SWITCH
Perform trouble diagnosis for ATP switch system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 6.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR 2-4WD SOLENOID
Perform trouble diagnosis for 2-4WD solenoid system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 7.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR TRANSFER CONTROL DEVICE
Perform trouble diagnosis for transfer control device system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 8.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR ACTUATOR MOTOR
Perform trouble diagnosis for actuator motor system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 9.
NO: Repair or replace damaged parts.
- CHECK SYSTEM FOR ACTUATOR POSITION SWITCH
Perform trouble diagnosis for actuator position switch system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 10.
NO: Repair or replace damaged parts.
- SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES: Inspection End.
NO: GO TO 11.
- CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "REFERENCE VALUE ".
Are the inspection results normal?
YES: GO TO 12.
NO: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
- CHECK TRANSFER INNER PARTS
- Disassemble transfer assembly. Refer to "DISASSEMBLY AND ASSEMBLY ".
- Check transfer inner parts.
Are the inspection results normal?
YES: Inspection End.
NO: Repair or replace damaged parts.