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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2018 (Audio, Visual, Navigation & Telephone System) >> Navigation System >> Reverse Signal Check for Display Control Unit
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Reverse Signal Check for Display Control Unit

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK REVERSE LAMP 
    1. Turn ignition switch ON.
    2. Place selector lever into R-position. Do back-up lamps come on?

    Yes or No 

    YES: GO TO 2.

    NO: Check back-up lamp system. Refer to "BACK-UP LAMP ".

  2. CHECK REVERSE SIGNAL 
    1. Disconnect display control unit connector M94.
    2. Turn ignition switch ON.
    3. With the selector lever in R-position, check voltage between display control unit and ground.
      SELECTOR LEVER POSITION CHART

      Terminals Selector lever position
      (+) (-)
      Connector Terminal R-position Other than R-position
      M94 6 Ground Battery voltage Approx. 0V
    4. Fig 1: Checking Voltage Between Display Control Unit Terminal 6 And Ground
      G04904287

    OK or NG 

    OK: Replace display control unit. Refer to "DISPLAY CONTROL UNIT ".

    NG: Check harness for open or short between display control unit and back-up lamp position relay.