Nissan Maxima Service and Repair Manual: On board diagnostic (OBD) system

Diagnosis Description

This system is an on board diagnostic system that records exhaust emission-related diagnostic information and detects a sensors/actuator-related malfunction. A malfunction is indicated by the malfunction indicator lamp (MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diagnostic tool (GST: Generic Scan Tool).

GST (Generic Scan Tool)

When GST is connected with a data link connector equipped on the vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various kinds of diagnostic tests. Refer to EC-127, "Diagnosis Description".

NOTE: Service $0A is not applied for regions where it is not mandated.

    Fuel filler cap warning system
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART Input *: This signal is sent to the ECM via the CAN communication line. Output *: This signal is sent to the combination meter ...

    Diagnosis system (ECM)
    DIAGNOSIS DESCRIPTION DIAGNOSIS DESCRIPTION : 1st Trip Detection Logic and Two Trip Detection Logic When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data ...

    Other materials:

    Steering switch
    Description When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio control switch circuit changes, depending on which button is pushed. Diagnosis Procedure 1.CHECK STEERING SWITCH RESISTANCE Disconnect steering switch connector M88. ...

    P050A, P050e cold start control
    Description ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. DTC Logic DTC DETECTION LOGIC NOTE: If DTC P050A or P050E is dis ...

    Push-button ignition switch illumination circuit
    Description Provides the power supply and the ground to control the push-button ignition switch illumination. Component Function Check 1.CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION OPERATION CONSULT Turn the ignition switch ON. Select "ENGINE SW ILLUMI" of BCM (INTELLGENT KEY) active ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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