Nissan Altima 2007-2012 Service Manual: Steering switch

Description

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

Diagnosis Procedure

1.CHECK HARNESS

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M46 and spiral cable connector M30.

3. Check continuity between AV control unit connector M46 terminals 25, 26, and 27 and spiral cable connector M30 terminals 24, 31, and 33.

4. Check continuity between AV control unit connector M46 (A) and ground.

Are the continuity test results as specified? YES >> GO TO 2

NO >> Repair harness.

2.SPIRAL CABLE CHECK

1. Disconnect spiral cable connector M88.

2. Check continuity between spiral cable harness connector M30 and M88.

Are the continuity test results as specified? YES >> GO TO 3.

NO >> Replace spiral cable. Refer to SR-8, "Removal and Installation".

3.CHECK STEERING SWITCH

Check steering switch. Refer to AV-355, "Component Inspection".

Does the steering switch pass inspection? YES >> INSPECTION END.

NO >> Replace steering switch. Refer to AV-448, "Removal and Installation".

Component Inspection

Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.

Standard

    AMP On signal circuit
    Description When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker amp. When this signal is received, the BOSE speaker amp. will turn on. Di ...

    Microphone signal circuit
    Description Power is supplied to the microphone from the AV control unit. The microphone transmits voice signals to the AV control unit. Diagnosis Procedure 1.CHECK CONTINUITY BETWEEN AV CONTRO ...

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