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

Diagnosis Procedure

1. CHECK INPUT 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 INPUT 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 BCM OUTPUT VOLTAGE

1. Connect the BCM.

2. Check voltage between BCM harness connector and ground.

Is the measurement normal? YES >> GO TO 4

NO >> Replace BCM. Refer to BCS-96, "Removal and Installation".

4. CHECK BCM INPUT SIGNAL

1. Connect the combination switch.

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

3. Check voltage between BCM 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.

    Power supply and ground circuit
    Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuse or fusible link are blown. Is the fuse or fusible link blown? YES >> Replace the blown fuse or fusible li ...

    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 connect ...

    Other materials:

    Hydraulic control system
    System Diagram System Description The hydraulic control mechanism consists of the oil pump directly driven by the engine, the hydraulic control valve that controls line pressure and transmission, and the input signal line. LINE PRESSURE AND SECONDARY PRESSURE CONTROL • When an input torq ...

    B2192, P1611 ID discord, immu-ECM
    Description BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON. DTC Logic DTC DETECTION LOGIC ...

    Idle air volume learning
    Description Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps each engine idle speed within the specific range. It must be performed under any of the following conditions: • Each time electric throttle control actuator or ECM is replaced. • Idle spee ...