Diagnosis Procedure

Check that there is no malfunction in 4WAS main control unit harness connector or disconnection.

Is the inspection result normal? 

YES: Replace 4WAS main control unit. Refer to "REMOVAL AND INSTALLATION ".

• Before replacing 4WAS main control unit, record the self-diagnosis results (history). Refer to "SPECIAL REPAIR REQUIREMENT ".

NO: Repair or replace the harnesses and connectors. Refer to "PRECAUTIONS FOR HARNESS REPAIR ".