Diff Lock Indicator Lamp Does Not Turn ON With Differential Lock Switched ON

DIFF LOCK INDICATOR LAMP DOES NOT TURN ON WITH DIFFERENTIAL LOCK SWITCHED ON


Inspection Procedure

SYMPTOM:
DIFF LOCK indicator lamp does not turn ON when turning differential lock mode switch to "ON" after engine start.

DIAGNOSTIC PROCEDURE
1.CHECK DIFF LOCK INDICATOR LAMP
Confirm the DIFF LOCK indicator lamp proves out when ignition switch is turned ON.
Is the inspection result normal?
YES - GO TO 2.
NO - Diff Lock Indicator Lamp Inoperative.
2.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Scan Tool Testing and Procedures.
Is any DTC detected by self-diagnosis?
YES - Check the malfunctioning system. Testing and Inspection.
NO - GO TO 3.
3.CHECK DIFFERENTIAL LOCK MODE SWITCH OPERATION
Check differential lock mode switch. P1838.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair component, harness or connector.
4.CHECK DIFFERENTIAL LOCK CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check differential lock control unit power supply and ground circuit. P1833.
Is the inspection result normal?
YES - Replace the differential lock control unit. Service and Repair.
NO - Repair harness or connector.