Nissan Altima 2007-2012 Service Manual: Mixture ratio self-learning value clear

Description

This describes show to erase the mixture ratio self-learning value. For the actual procedure, follow the instructions in

    Idle air volume learning
     Description Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within the specific range. It must be performed under the following condi ...

    Other materials:

    Intake valve timing control
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART *: This signal is sent to the ECM through CAN communication line SYSTEM DESCRIPTION This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. The ECM receives signals su ...

    BCM branch line circuit
    Diagnosis 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 inspection result normal? Y ...

    Key slot
    Diagnosis Procedure 1.CHECK KEY SLOT POWER SUPPLY CIRCUI 1. Turn ignition switch OFF. 2. Disconnect key slot connector. 3. Check voltage between slot connector and ground. Is the inspection result normal? YES >> GO TO 2 NO >> Repair or replace key slot power supply circuit ...