2003 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE

A Communication Line Check

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check A Switch Circuit 
    1. Turn ignition switch OFF.
    2. Disconnect display unit connector and A switch connector.
    3. Check continuity between display unit and A switch.
      CHECK CONTINUITY

      Terminals Continuity
      Display unit AV switch
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M93 11 (V) M98 6(V) Yes
      13 (L/G) 8 (L/G)
      12 7
    4. Check continuity between display unit and ground.
    CHECK CONTINUITY

    Terminals Continuity
    Connector Terminal (Wire color) Terminal
    M93 11 (V) Ground No
    13 (L/G)

    OK or NG

    1. OK: GO TO 2.
    2. NG: Replace harness.
      Fig 1: Checking Continuity Between Display Unit And Ground
      G03501121Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK A COMMUNICATION SIGNAL 
    1. Connect display unit connector and A switch connector.
    2. Turn ignition switch ON.
    3. Check the signal between display unit harness connector M93 terminals 11 (V), 13 (L/G) and ground with CONSULT-II or oscilloscope.
    1. 11 (V), 13 (L/G) - Ground: Refer to "Terminals And Reference Value For Display Unit  ".

    OK or NG

    1. OK: Replace A switch. Refer to "REMOVAL AND INSTALLATION FOR A SWITCH ".
    2. NG: Replace display unit. Refer to "Removal And Installation Of Display Unit  ".
      Fig 2: Checking Signal Between Display Unit Harness Connector M93 Terminals 11
      G03501122Courtesy of NISSAN MOTOR CO., U.S.A.
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  • • You are missing required tools, torque specs, or safe lifting equipment.
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