Nissan Altima 2007-2012 Service Manual: ECU diagnosis

BCM (BODY CONTROL MODULE)

Reference Value

VALUES ON THE DIAGNOSIS TOOL

Terminal Layout

Physical Values

1: Sedan only

2: With LH front window anti-pinch

3: With LH and RH front window anti-pinch

4: With Intelligent Key

5: Without Intelligent Key

Wiring Diagram-Coupe

Wiring Diagram-Sedan

Fail Safe

DTC Inspection Priority Chart

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

DTC Index

NOTE:

Details of time display

• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning ignition switch OFF → ON again.

• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch OFF → ON after returning to the normal condition if the malfunction is detected again.

    Function diagnosis
    INTERIOR ROOM LAMP CONTROL SYSTEM System Diagram System Description OUTLINE • Interior room lamps* are controlled by interior room lamp timer control function of BCM. *:Front room/map l ...

    Symptom diagnosis
    INTERIOR LIGHTING SYSTEM SYMPTOMS Symptom Table CAUTION: Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected. ...

    Other materials:

    Fog light switch (if so equipped)
    To turn the fog lights on, turn the headlight switch to the position, then turn the fog light switch to the position. To turn the fog lights on with the headlight switch in the AUTOposition, the headlights must be on, then turn the fog light switch to the position. To turn the fog ...

    Combination meter
     Diagnosis Procedure 1.CHECK FUSES Check for blown combination meter fuses. Is the inspection result normal? YES >> GO TO 2 NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. 2.POWER SUPPLY CIRCUIT CHECK 1. Disconnect combinatio ...

    Engine speed signal circuit
    Description • ECM sends engine speed signal to power steering control unit. Diagnosis Procedure 1.PERFORM ECM SELF-DIAGNOSIS Perform ECM self-diagnosis. Is any error system detected? YES >> Check the error system. NO >> GO TO 2. 2.CHECK HARNESS BETWEEN ECM AND POWER STEE ...