Steering Switch

STEERING SWITCH

Description

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


Diagnosis Procedure

Regarding Wiring Diagram information, With Navigation or Sedan.

1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1.Turn ignition switch OFF.





2.Disconnect steering wheel audio control switch connector M88.
3.Check resistance between steering switch connector terminals.





Do the steering wheel audio control switches check OK?
YES- GO TO 2.
NO- Replace steering wheel audio control switch. Bose Audio With Navigation.

2. CHECK HARNESS






1.Disconnect AV control unit connector M100 (sedan) or M119
(coupe) and spiral cable connector M30.
2.Check continuity between AV control unit harness connector
M100 (sedan) or M119 (coupe) (A) and spiral cable harness connector M30 (B).





3.Check continuity between AV switch connector M100 (sedan) or M119 (coupe) (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. Bose Audio With Navigation.