Nissan Altima 2007-2012 Service Manual: Steering switch

Description

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

Diagnosis Procedure

1.CHECK STEERING SWITCH RESISTANCE

1. Disconnect steering switch connector M88.

2. Check resistance between steering switch connector terminals.

Do the steering switches check OK? YES >> GO TO 2

NO >> Replace steering switch. Refer to AV-225, "Removal and Installation".

2.CHECK HARNESS

1. Turn ignition switch OFF.

2. Disconnect audio unit connector M43 and spiral cable connector M30.

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. Refer to SR-8, "Removal and Installation".

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