Nissan Altima 2007-2012 Service Manual: U1220 AV control unit

Description

Refer to AV-240, "System Description".

DTC Logic

DTC DETECTION LOGIC

    U1217 AV control unit
    Description Refer to AV-240, "System Description". DTC Logic DTC DETECTION LOGIC ...

    U1244 GPS antenna
    Description Refer to AV-240, "System Description". DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.GPS ANTENNA CHECK Inspect GPS antenna and antenna feeder for damage or po ...

    Other materials:

    P0139 HO2S2
    Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from th ...

    P0506 ISC System
    Description The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine ...

    Ignition timing
    Description This describes how to check the ignition timing. For the actual procedure, follow the instructions in “BASIC INSPECTION”. IGNITION TIMING : Special Repair Requirement 1.CHECK IGNITION TIMING 1. Attach timing light to No. 1 igniton coil (1) wire as shown. 2. Check ignitio ...