Nissan Altima 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 ...

    Other materials:

    Secondary speed sensor
    Exploded View 1. CVT assembly 2. Shims 3. O-ring 4. Secondary Speed Sensor Removal and Installation Refer to the figure for removal and installation. CAUTION: • Do not reuse O-ring. • Apply CVT fluid to O-ring. • Insert the shims. • After installation is complete, check ...

    Precaution
    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the dr ...

    ASCD indicator
    Description The ASCD operation status is indicated by two indicators, (CRUISE and SET on the information display) on the combination meter. CRUISE indicator is displayed to indicate that ASCD system is ready for operation when MAIN switch on ASCD steering switch is turned ON. SET indica ...