Nissan Altima 2007-2012 Service Manual: P1148, P1168 Closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 or P1168 is displayed with another DTC for A/F sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

    P0850 PNP Switch
    Description When the selector lever position is P or N, park/neutral position (PNP) signal from the TCM is sent to ECM (CVT models). When the selector lever position is Neutral position, park/n ...

    P1212 TCS Communication line
    Description This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and “ABS actuator and electric unit (cont ...

    Other materials:

    Audio system (sedan)
    System Diagram System Description AUDIO SYSTEM The audio system consists of the following components • AV control unit (audio unit) • BOSE speaker amp. • Window antenna • Antenna amp. • Steering wheel audio control switches • Front door speakers • Tweeters • Center spe ...

    How to adjust the screen (if so equipped)
    settings, press the SETTING button while the RearView Monitor screen is displayed. Each time the SETTING button is pressed, the next setting item is selected. Turn the TUNE·SCROLL/TUNE·FOLDER control knob to adjust each item. Available setting items: ● Brightness ● Contrast &# ...

    Ignition signal
    Description The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit. Component Function Check 1.INSPECTION ...