Nissan Altima (L32) 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.