Premium Audio (Crew Cab)

STEERING SWITCH

Description

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


Diagnosis Procedure

Regarding Wiring Diagram information, Crew Cab.

1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE

1.Turn ignition switch OFF.





2.Disconnect steering wheel audio control switch connector M102.
3.Check resistance between steering switch connector terminals.





Do the steering wheel audio control switch buttons check OK?
YES- GO TO 2
NO- Replace steering wheel audio control switch. Premium Audio (Crew Cab).

2. CHECK HARNESS






1.Disconnect Bluetooth control unit harness connector B141 and spiral cable harness connector M30.
2.Check continuity between Bluetooth control unit harness connector B141 (A) and spiral cable harness connector M30 (B).





3.Check continuity between Bluetooth control unit connector B141 (A) and ground.





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

3. SPIRAL CABLE CHECK






1.Disconnect spiral cable connector M102.
2.Check continuity between spiral cable harness connector M30
(A) and M102 (B).





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