Nissan Altima 2007-2012 Service Manual: P1148 Closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 is displayed with another DTC for A/F sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

    P0850 PNP Switch
    Description When the shift lever position is P or N (CVT), Neutral position (M/T), park/neutral position (PNP) switch is ON. ECM detects the position because the continuity of the line (the ON s ...

    P1217 engine over temperature
    DTC Logic DTC DETECTION LOGIC NOTE: • If DTC P1217 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. • If DTC P1217 is displayed with DTC P0607, first perfor ...

    Other materials:

    Rear window defogger relay
    Description Power is supplied to the rear window defogger with BCM control. Component Function Check 1. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT Check that an operation noise of rear window defogger relay [located in fuse block (J/B)] can be heard when turning the rear window de ...

    Lan system circuit
    Description SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally. Diagnosis Procedure DIAGNOSIS PROCEDURE FOR LAN CIRCUIT 1.CHECK POWER SUPPLY FOR DOOR MOTORS 1. Press ignition switch ON. 2. Check voltage between front air control connector M37 ...

    Air conditioning cut control
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART *1: This signal is sent to the ECM through CAN communication line. *2: ECM determines the start signal status by the signals of engine speed and battery voltage. SYSTEM DESCRIPTION This system improves engine operation when th ...