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:

    BCM branch line circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspec ...

    P0139 HO2S2
    Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from th ...

    Precaution
    HANDLING PRECAUTIONS FOR PLASTICS Precautions For Plastics 1. When repairing and painting a portion of the body adjacent to plastic parts, consider their characteristics (influence of heat and solvent) and remove them if necessary or take suitable measures to protect them. 2. Plastic par ...