Diagnostic Procedure
- Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not a malfunction.
- Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: 4WD shift switch is 4H or 4LO, steering wheel is turned fully to either side.
- CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to "CONSULT FUNCTION (ALL MODE AWD/4WD) ".
Is CAN COMM CIRCUIT [U1000] displayed?
YES: Perform trouble diagnosis for CAN communication line.
NO: GO TO 2.
- 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 ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self diagnosis for ECM. Refer to "CONSULT FUNCTION ".
Is any malfunction detected by self-diagnosis?
YES: Check the malfunctioning system.
NO: GO TO 4.
- CHECK SYSTEM FOR CLUTCH PRESSURE SOLENOID
Perform trouble diagnosis for clutch pressure solenoid system. Refer to "DIAGNOSIS PROCEDURE ".
Are the inspection results normal?
YES: GO TO 5.
NO: Repair or replace damaged parts.
- SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES: Inspection End.
NO: GO TO 6.
- CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "REFERENCE VALUE ".
Are the inspection results normal?
YES: GO TO 7.
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.