Nissan Altima 2007-2012 Service Manual: How to read wiring diagrams

Connector symbols

Most of connector symbols in wiring diagrams are shown from the terminal side.

    How to follow trouble diagnoses
    Description NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing. ...

    Abbreviations
    Abbreviation List The following ABBREVIATIONS are used: ...

    Other materials:

    Door switch
    Description Detects door open/close condition. Component Function Check 1.CHECK FUNCTION Check door switches DOOR SW-DR, DOOR SW-AS in Data Monitor mode with CONSULT-III. Is the inspection result normal? YES >> Door switch is OK. NO >> Refer to RF-17, "Diagnosis Proc ...

    P2118 throttle control motor
    Description The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the thrott ...

    P0451 evap control system pressure sensor
    Description The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously cond ...