Nissan Altima 2007-2012 Service Manual: B260f engine status

Description

BCM receives the engine status signal from ECM via CAN communication.

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B260F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36, "DTC Logic".

• If DTC B260F is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-37, "DTC Logic".

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON under the following conditions.

- CVT selector lever is in the P position.

- Do not depress the brake pedal.

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

Is DTC detected? YES >> Refer to SEC-100, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.INSPECTION START

1. Turn ignition switch ON.

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

3. Touch “ERASE”.

4. Perform DTC Confirmation Procedure.

See SEC-100, "DTC Logic".

Is the DTC B260F displayed again? YES >> GO TO 2

NO >> Inspection End.

2.REPLACE ECM

1. Replace ECM.

2. Refer to EC-1048, "BASIC INSPECTION : Special Repair Requirement" (VQ35DE), EC-24, "BASIC INSPECTION : Special Repair Requirement" (QR25DE California) or EC-560, "BASIC INSPECTION : Special Repair Requirement" (QR25DE except for California).

>> Inspection End.

    B260d steering lock unit
    Description The electronic steering column lock performs the check by itself according to the steering lock status (before lock, after lock and unlock). DTC Logic DTC DETECTION LOGIC DTC CO ...

    B2612 steering status
    Description There are 2 switches in the steering unit. IPDM E/R compares those 2 switches conditions to judge the present steering status and transmit the result to BCM via CAN communication. DT ...

    Other materials:

    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 ...

    The oil pressure warning lamp does not turn on
    Description The oil pressure warning lamp stays off when the ignition switch is turned ON. Diagnosis Procedure 1.CHECK OIL PRESSURE WARNING LAMP Perform IPDM E/R auto active test. Refer to PCS-14, "Diagnosis Description". Is oil pressure warning lamp illuminated? YES >> G ...

    Signal buffer system
    System Diagram System Description • IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via CAN communication. Refer to PCS-11, "System Description". • IPDM E/R receives the rear window defogger status signal from BCM via C ...