LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2009 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 44 (Audio System, Visual System, Navigation System (Hybrid)) >> BOSE Audio With Navigation >> Component Diagnosis >> Power Supply And Ground Circuit >> Rear View Camera Control Unit >> REAR VIEW CAMERA CONTROL UNIT : Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

REAR VIEW CAMERA CONTROL UNIT : Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FUSE

    Check that the following fuses of the rear view camera control unit are not blown.

    FUSES REFERENCE

    Unit Terminals Signal name Fuse No.
    Rear view camera control unit 1 Battery power 24
    2 Ignition switch ACC or ON 19

    Are the fuses OK? 

    YES: GO TO 2

    NO: Be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK POWER SUPPLY CIRCUIT

    Check voltage between rear view camera control unit harness connector and ground.

    REAR VIEW CAMERA CONTROL UNIT AND GROUND VOLTAGE SPECIFICATION

    Signal name Connector No. Terminal No. Ignition switch position Value (Approx.)
    Battery power supply B31 1 OFF Battery voltage
    ACC power supply 2 ACC
    Fig 1: Checking Voltage Between Rear View Camera Control Unit Harness Connector And Ground
    G05047841Courtesy of NISSAN MOTOR CO., U.S.A.

    Are the voltage readings as specified? 

    YES: GO TO 3

    NO: Check harness between rear view camera control unit and fuse.

  3. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect rear view camera control unit connector.
    3. Check continuity between rear view camera control unit harness connector B31 terminal 3 and ground.
      REAR VIEW CAMERA CONTROL UNIT AND GROUND CONTINUITY SPECIFICATION

      Signal name Continuity
      Ground Continuity should exist.
    Fig 2: Checking Continuity Between Rear View Camera Control Unit Harness Connector B176 Terminal 3 And Ground
    G05047842Courtesy of NISSAN MOTOR CO., U.S.A.

    Does continuity exist? 

    YES: Inspection End.

    NO: Repair harness or connector.