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.

    Combination switch output circuit
    Diagnosis Procedure 1. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN 1. Turn the ignition switch OFF. 2. Disconnect the BCM and combination switch. 3. Check continuity between BCM harness connect ...

    Symptom diagnosis
    COMBINATION SWITCH SYSTEM SYMPTOMS Symptom Table 1. Perform the data monitor of CONSULT-III to check for any malfunctioning item. 2. Check the malfunction combinations. 3. Identify the malfu ...

    Other materials:

    P0850 PNP Switch
    Description When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM is sent to ECM (CVT models). When the selector lever position is Neutral position, park/neutral position (PNP) switch is ON. ECM detects the position because the continuity of the line ( ...

    Spark plug
    Removal and Installation 1. Ignition coil 2. Spark plug 3. Rocker cover REMOVAL 1. Remove the ignition coil. Refer to EM-35, "Removal and Installation". 2. Remove the spark plug with a suitable spark plug wrench. INSPECTION AFTER REMOVAL • Do not use a wire brush for clean ...

    P0139, P0159 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 ...