Base Audio

STEERING SWITCH

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Audio System.

1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1.Turn ignition switch OFF.
2.Disconnect combination switch connector M88.
3.Check resistance between combination switch connector terminals.





Is the inspection result normal?
YES- GO TO 2.
NO- Replace steering switches. Refer to "Removal and Installation" Removal And Installation.

2. CHECK HARNESS BETWEEN COMBINATION SWITCH AND COMBINATION METER

1.Disconnect combination meter connector M24 and combination switch connector M30.
2.Check continuity between combination meter connector M24 and combination switch connector M30.





3.Check continuity between combination meter connector M24 and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness or connectors.

3. CHECK COMBINATION SWITCH

Check continuity between combination switch connectors M30 and M88.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace spiral cable. Refer to "Removal and Installation" Service and Repair.

4. CHECK HARNESS BETWEEN COMBINATION METER AND AUDIO UNIT

1.Disconnect audio unit connector M86.
2.Check continuity between combination meter connector M24 and audio unit connector M86.





3.Check continuity between combination meter connector M24 and ground.





Is the inspection result normal?
YES- Replace audio unit. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace harness or connectors.