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

Description

This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instructions in “Diagnosis Procedure”.

Special Repair Requirement

1.START

1. Start engine and warm it up to normal operating temperature.


1. Start engine and warm it up to normal operating temperature.

2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.

3. Clear mixture ratio self-learning value by touching “CLEAR”.

1. Start engine and warm it up to normal operating temperature.


1. Start engine and warm it up to normal operating temperature.

2. Turn ignition switch OFF.

3. Disconnect mass air flow sensor harness connector.

4. Restart engine and let it idle for at least 5 seconds.

5. Stop engine and reconnect mass air flow sensor harness connector.

6. Select Service $03 with GST. Make sure DTC P0102 is detected.

7. Select Service $04 with GST to erase the DTC P0102.

>> END

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

    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 inspect ...

    Inspection and adjustment
    ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT Precaution for TCM and CVT Assembly Replacement CAUTION: • Check if new data (Unit ID) are entered correctly after replacing CVT assembly and erasing data in TCM. (Connect CONSULT-III, and then turn ignition switch OFF.) • When replac ...

    Hood
    1 Pull the hood lock release handle located below the driver’s side instrument panel; the hood springs up slightly. 2 Push the lever at the front of the hood to the side as illustrated with your fingertips and raise the hood. 3 Remove the support rod from the clamp. 4 Insert the support r ...