4WD Shift Indicator Lamp Or 4LO Indicator Lamp Does Not Change

4WD SHIFT INDICATOR LAMP OR 4LO INDICATOR LAMP DOES NOT CHANGE


Description

4WD shift indicator lamp or 4LO indicator lamp does not change when switching the 4WD shift switch.




4WD SHIFT INDICATOR LAMP OR 4LO INDICATOR LAMP DO NOT CHANGE


Diagnosis Procedure

1.CONFIRM THE SYMPTOM
Confirm 4WD shift indicator lamp and 4LO indicator lamp when ignition switch is turned to ON.
Do 4WD shift indicator lamp and 4LO indicator lamp turn on?
YES - GO TO 2.
NO - Go to 4WD Shift Indicator Lamp And 4LO Indicator Lamp Does Not Turn ON.
2.CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer to P1813.
Are the inspection results normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. Refer to P1814.
Are the inspection results normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK SYSTEM FOR 4LO SWITCH
Perform trouble diagnosis for 4LO switch system. Refer to P1810.
Are the inspection results normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
5.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.
6.SYMPTOM CHECK
Check again.
Does the symptom still occur?
YES - GO TO 7.
NO - Inspection End
7.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to Pinout Values and Diagnostic Parameters.
Are the inspection results normal?
YES - GO TO 8.
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.
8.CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly. Refer to Transfer Assembly.
2. Check transfer inner parts.
Are the inspection results normal?
YES - Inspection End.
NO - Repair or replace damaged parts.