Differential Lock Indicator Lamp Flashes While Driving

DIFF LOCK Indicator Lamp Flashes While Driving

Description

The DIFF LOCK indicator lamp will flash once every 2 seconds when the differential lock system is in standby condition. Standby condition is the time between when the differential lock mode switch is turned ON and when the differential lock control unit see's all conditions are met to engage the differential lock. The DIFF LOCK indicator lamp should be OFF if there has been a malfunction detected. For more information regarding the differential lock system operation, refer to the Owner's Manual.

Inspection Procedure

SYMPTOM:

DIFF LOCK indicator lamp sometimes flashes while driving.

Diagnostic Procedure

1. PERFORM DTC CHECK

Perform "DTC check". Refer to [SDT Function (Diff Lock)] Scan Tool Testing and Procedures.

Is any malfunction detected by "DTC check"?
YES
Check the malfunctioning system. Refer to [DTC Index: Differential Lock Control Unit] DTC Index Differential Lock Control Unit.
NO
GO TO 2.

2. CHECK DIFFERENTIAL LOCK MODE SWITCH

Perform trouble diagnosis for differential lock mode switch. Refer to [P1838 On Switch] P1838.

Is the inspection result normal?
YES
Condition is intermittent. Refer to [Service Information for Electrical Incident: Intermittent Incident] Service Information for Electrical Incident: Intermittent Incident.
NO
Repair or replace malfunctioning component.