Nissan Altima 2007-2012 Service Manual: B2557 vehicle speed

Description

BCM receives the 2 vehicle speed signals via CAN communication. One signal is transmitted by the “unified meter”. Another signal is transmitted by “ABS actuator and electric unit (control unit)”. BCM compares both signals to detect the vehicle speed.

DTC Logic

DTC DETECTION LOGIC

NOTE: • If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-235, "DTC Logic".

• If DTC B2557 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. Drive the vehicle at the vehicle speed of 10 km/h or more and wait for at least 10 seconds.

2. Check “Self Diagnostic Result” with CONSULT-III.

Is DTC detected? YES >> Refer to SEC-273, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

1.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Check “Self Diagnostic Result” with CONSULT-III. Refer to BRC-51, "DTC No. Index".

Is the inspection result normal? YES >> GO TO 2

NO >> Repair or replace malfunctioning parts.

2.CHECK UNIFIED METER.

Check unified meter. Refer to MWI-4, "Work Flow".

>> Inspection End.

    B2556 push-button ignition switch
    Description The switch that changes the power supply position. BCM maintains the power supply position status. BCM changes the power supply position with the operation of the push-button ignition ...

    B2560 starter control relay
    Description Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N or P position and the steering is locked or unlocked. It is installed in parallel with the ...

    Other materials:

    Camshaft
    Removal and Installation 1. Camshaft position sensor bracket (RH) 2. Camshaft brackets 3. No. 1 camshaft bracket (RH) 4. Camshaft (EXH) RH 5. Camshaft (INT) RH 6. Cylinder head (RH) 7. Cylinder head (LH) 8. Camshaft (EXH) LH 9. Camshaft (INT) LH 10. No. 1 camshaft bracket (LH) 11. Cams ...

    U1210 DVD-ROM seek
    Description Refer to AV-240, "System Description". DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.CHECK DVD-ROM Check DVD-ROM for dirt, scratches and warpage. Is the DVD-ROM clean and undamaged? YES >> Replace AV control unit. Refer to AV-437, "Removal and I ...

    Front seat
    DRIVER SIDE  Exploded View DRIVER'S SEAT 1. Headrest 2. Headrest holder (locked) 3. Headrest holder (free) 4. Seatback board 5. Seatback assembly 6. Slide cover 7. Seat belt buckle 8. Seat harness 9. Seat cushion heater unit 10. Seat cushion 11. Seat trim 12. Front leg covers ...