Nissan Altima 2007-2012 Service Manual: Combination switch output circuit

Diagnosis Procedure

1. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

1. Turn the ignition switch OFF.

2. Disconnect the BCM and combination switch.

3. Check continuity between BCM harness connector and combination switch harness connector.

Does continuity exist? YES >> GO TO 2

NO >> Repair or replace harness.

2. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT

Check for continuity between BCM harness connector and ground.

Does continuity exist? YES >> Repair or replace harness.

NO >> GO TO 3

3. CHECK COMBINATION SWITCH OUTPUT VOLTAGE

1. Connect the BCM and combination switch.

2. Turn ON any switch in the system that is malfunctioning.

3. Check voltage between combination switch harness connector and ground.

Is the measurement normal when any of the switches is turned ON? YES >> Replace BCM. Refer to BCS-96, "Removal and Installation".

NO >> Replace the combination switch. Refer to WW-121, "Removal and Installation".

Special Repair Requirement

1. REQUIRED WORK WHEN REPLACING BCM

Initialize control unit. Refer to BCS-6, "CONFIGURATION (BCM) : Special Repair Requirement".

>> Work End.

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