Nissan Altima 2007-2012 Service Manual: Reverse signal circuit


A reverse signal is supplied from the back-up lamp relay to the rear view camera control unit. When this signal is received, the display shows a view to the rear of the vehicle.

Diagnosis Procedure


1. Turn ignition switch ON.

2. Shift selector lever to R position.

Does back-up lamp illuminate? YES >> GO TO 2

NO >> Check back-up lamp system. Refer to EXL-4, "Work Flow".


Select “DATA MONITOR” of “REARVIEW CAMERA”. Operate ignition switch with “R POSI SIG” of “DATA MONITOR” and check operate status.

1. Turn ignition switch OFF.

2. Disconnect rear view camera control unit connector.

3. Turn ignition switch ON.

4. Shift selector lever to R position.

5. Check voltage between rear view camera control unit harness connector B31 terminal 4 and ground.

Does battery voltage exist? YES >> Inspection End.

NO >> Check harness for open or short between rear view camera control unit and back-up lamp relay.

    Camera image signal circuit (camera control unit to av control unit)
    Description Rear view camera image signals are transmitted from the rear view camera control unit to the AV control unit using the image signal circuits. Diagnosis Procedure 1.CHECK CAMERA IMAG ...

    Other materials:

    TCM 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 following terminals and connectors for damage, bend and loose connection (unit side and connector side). - TCM - Harne ...

    P0841 pressure sensor function
    Description Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal, TCM changes the operating pressure of the primary pulley and the secondary pulley and changes the groove width of the pulley to control the ge ...

    Power window main switch
    Reference Value TERMINAL LAYOUT PHYSICAL VALUES MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH Wiring Diagram Fail Safe FAIL-SAFE CONTROL Switches to fail-safe control when malfunction is detected in encoder signal that detects up/down speed and direction of door glass ...