Nissan Altima 2007-2012 Service Manual: Engine control system symptoms

Symptom Table

SYSTEM — BASIC ENGINE CONTROL SYSTEM

1 - 6: The numbers refer to the order of inspection.

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SYSTEM — ENGINE MECHANICAL & OTHER

1 - 6: The numbers refer to the order of inspection.

    Symptom diagnosis
    ...

    Normal operating condition
    Description FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED) If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is P or N and engine speed is over 1 ...

    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 ...

    P0720 vehicle speed sensor cvt (secondary speed sensor)
    Description The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)] detects the revolution of the CVT output shaft and emits a pulse signal. The pulse signal is transmitted to the TCM, which converts it into vehicle speed. DTC Logic DTC DETECTION LOGIC DTC CONFIRMAT ...

    Diagnosis system (AV control unit)
    Diagnosis Description DESCRIPTION • Diagnosis function consists of the self-diagnosis mode performed automatically and the CONFIRMATION/ ADJUSTMENT mode operated manually. • Self-diagnosis mode checks for connections between the units constituting this system, analyzes each individual ...