Base Audio

STEERING SWITCH (COUPE)

Description

When one of the steering wheel audio control switches is pushed, the resistance in steering switch circuit changes depending on which switch is pushed.


Diagnosis Procedure

Regarding Wiring Diagram information, Base Audio

1. CHECK STEERING SWITCH RESISTANCE






1.Disconnect steering wheel audio control switches connector
M88.
2.Check resistance between steering wheel audio control switches connector terminals.





Do the steering switches check OK?
YES- GO TO 2
NO- Replace steering switch. Base Audio.

2. CHECK HARNESS






1.Turn ignition switch OFF.
2.Disconnect audio unit connector M43 (A) and spiral cable connector M30 (B).
3.Check continuity between audio unit harness connector M43 (A) and spiral cable harness connector M30 (B).





4.Check continuity between audio unit connector M43 (A) and ground.





Are the continuity results as specified?
YES- GO TO 3
NO- Repair harness.

3. SPIRAL CABLE CHECK






1.Disconnect spiral cable connector M88.
2.Check continuity between spiral cable harness connector M30
(A) and M88 (B).





Does the spiral cable check OK?
YES- Inspection End.
NO- Replace spiral cable. Service and Repair.