Diagnosis By Indicator Lamp

Diagnosis of The Faults Based on the Status of 4WD Indicator Lamp, 4WD Switch and T/F Change Lever
Diagnosis charts are shown. If troubles can not be solved after every chart was traced, troubles may occur in the ECU. In this case, replace the ECU and trace every chart again.

Fault on Switching from 2WD to 4WD
1. In case that 4WD indicator's blinking changes from 2Hz to 4Hz after Solution 1 is carried out.
Faults occur in the motor actuator or the transfer case assembly. Remove the motor actuator and check function. If problem was found and it was repaired, try Solution 1 again. After that, disassemble the transfer case assembly for check and repair or replace. If incident is not improved after mentioned actions were taken, replace the ECU.








2. In case that 4WD indicator dose not blink nor light, when switching from 2WD to 4WD.











3. Case that the indicator keeps blinking by 2Hz after aforementioned Solution 2 is carried out.

Fault on Switching from 4WD to 2WD








1. Case that indicator dose not blink nor turn out.











2. Case that indicator keeps 2Hz blinking after aforementioned Solution 3 is carried out.








3. Case that indicator's blinking changes to 4Hz after aforementioned Solution 4 is carried out.