Nissan Altima (L32) 2007-2012 Service Manual ≻ Security control system sedan with intelligent key ≻ Component diagnosis ≻ B261A push-button ignition switch

Nissan Altima (L32) 2007-2012 Service Manual: B261A push-button ignition switch

Description

IPDM E/R transmits the push-button ignition switch status via CAN communication to BCM. BCM receives push-button ignition switch status by hardwire input. BCM compares the 2 signals for mismatch.

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B261A is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-235, "DTC Logic".

• If DTC B261A is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-236, "DTC 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 position

- Do not depress brake pedal.

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

Is DTC detected? YES >> Refer to SEC-307, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK PUSH-BUTTON IGNITION SWITCH OUTPUT SIGNAL 1

1. Turn ignition switch OFF.

2. Disconnect push-button ignition switch harness connector and IPDM E/R harness connector.

3. Check voltage between push-button ignition switch harness connector and ground.

Is the inspection result normal? YES >> GO TO 4

NO >> GO TO 2

2.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

1. Disconnect BCM harness connector.

2. Check continuity between push-button ignition switch harness connector M38 (A) terminal 4 and BCM harness connector M19 (B) terminal 77.

3. Check continuity between push-button ignition switch harness connector M38 (A) terminal 4 and ground.

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

NO >> Repair harness or connector.

3.CHECK PUSH-BUTTON IGNITION SWITCH

1. Disconnect IPDM E/R harness connector.

2. Check continuity between push-button ignition switch harness connector M38 (A) terminal 4 and IPDM E/R harness connector E18 (B) terminal 28.

3. Check continuity between push-button ignition switch harness connector and ground.

Is the inspection result normal? YES >> GO TO 4

NO >> Repair harness or connector.

4.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

>> Inspection End.

B2619 BCM

Description BCM requests IPDM E/R to supply power to steering lock unit. After receiving the power, the steering lock unit transmits an ON signal to BCM. DTC Logic DTC DETECTION LOGIC DTC CON ...

B26E1 No reception of engine status signal

Description BCM receives the engine status signal from ECM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B26E1 is displayed with DTC U1000, first perform the trouble diag ...

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