Nissan Altima 2007-2012 Service Manual: B261A push-button ignition switch

Description

BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication line to BCM.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1. PERFORM DTC CONFIRMATION PROCEDURE

1. Press the push-button ignition switch under the following conditions, and wait for at least 1 second.

- CVT selector lever is in the P or N position.

- Release the brake pedal.

2. Check “Self diagnostic result” with CONSULT-III.

Is DTC detected? YES >> Go to PCS-75, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1. CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns to ON.

Does ignition switch turn to ON? YES >> GO TO 2

NO >> GO TO 4

2. CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)

1. Disconnect push-button ignition switch.

2. Check voltage between IPDM E/R harness connector and ground.

Is the inspection result normal? YES >> GO TO 3

NO >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".

3. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)

1. Disconnect IPDM E/R and BCM.

2. Check continuity between IPDM E/R harness connector (A) and push-button ignition switch harness connector (B).

3. Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal? YES >> GO TO 6

NO >> Repair or replace harness.

4. CHECK IGNITION SWITCH OUTPUT SIGNAL (BCM)

1. Disconnect push-button ignition switch.

2. Check voltage between BCM harness connector and ground.

Is the inspection result normal? YES >> GO TO 5

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

5. CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

1. Disconnect BCM and IPDM E/R.

2. Check continuity between BCM harness connector (A) and push-button ignition switch harness connector (B).

3. Check continuity between BCM harness connector and ground.

Is the inspection result normal? YES >> GO TO 6

NO >> Repair or replace harness.

6. CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

    B2618 BCM
    Description BCM controls the various electrical components and simultaneously supplies power according to the power supply position. BCM checks the power supply position internally. DTC Logic ...

    Power supply and ground circuit
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