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

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





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




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 Warning Lamp Does Not Turn ON.
2.CHECK SYSTEM FOR STOP LAMP SWITCH
Perform trouble diagnosis for stop lamp switch system. C1116.
Are the inspection results normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. P1813.
Are the inspection results normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. P1814.
Are the inspection results normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
5.CHECK SYSTEM FOR 4LO SWITCH
Perform trouble diagnosis for 4LO switch system. P1810.
Are the inspection results normal?
YES - GO TO 6.
NO - Repair or replace damaged parts.
6.CHECK SYSTEM FOR ATP SWITCH
Perform trouble diagnosis for ATP switch system. Component Tests and General Diagnostics.
Are the inspection results normal?
YES - GO TO 7.
NO - Repair or replace damaged parts.
7.SYMPTOM CHECK
Check again.
Does the symptom still occur?
YES - GO TO 8.
NO - Inspection End
8.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Pinout Values and Diagnostic Parameters.
Are the inspection results normal?
YES - GO TO 9.
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.
9.CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly. Disassembly And Assembly.
2. Check transfer inner parts.
Are the inspection results normal?
YES - Inspection End.
NO - Repair or replace damaged parts.