4WAS Warning Lamp Does Not Turn On

4WAS WARNING LAMP DOES NOT TURN ON

Description

4WAS warning lamp does not turn ON when turning ignition switch ON from OFF.


Diagnosis Procedure


1. CHECK 4WAS SYSTEM POWER SUPPLY AND GROUND CIRCUIT

Perform the trouble diagnosis of the power supply and ground circuit. Diagnosis Procedure (4WAS Front Control Unit) and Diagnosis Procedure (4WAS Main Control Unit).
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace the specific malfunctioning part.

2. CHECK 4WAS WARNING LAMP

Perform the trouble diagnosis of 4WAS warning lamp. 4WAS Warning Lamp.
Is the inspection result normal?
YES- Check that there is no malfunction in each harness connector pin terminal or disconnection.
NO- Repair or replace the specific malfunctioning part.