4WD Warning Lamp Flashes Rapidly

4WD WARNING LAMP FLASHES RAPIDLY


Description

The 4WD warning lamp flashes quickly while driving (2 times / second). The lamp continues to flash until the ignition switch is turned OFF.





4WD WARNING LAMP FLASHES RAPIDLY


Diagnosis Procedure

1.CHECK TIRE
Check the following.
- Tire pressure
- Wear condition
- Longitudinal tire size (There is no difference between longitudinal tires.)
Are the inspection results normal?
YES - GO TO 2.
NO - Repair or replace damaged parts.
2.CHECK 4WD WARNING LAMP
Stop the vehicle and allow it to idle for a short period of time.
Does flashing stop?
YES - Inspection End.
NO - GO TO 3.
3.CHECK TRANSFER FLUID TEMPERATURE
Perform trouble diagnosis for transfer fluid temperature system. Refer to P1826.
Are the inspection results normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES - Inspection End.
NO - GO TO 5.
5.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to Pinout Values and Diagnostic Parameters.
Are the inspection results normal?
YES - Inspection End.
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.