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Beep at Start-Up, No Display Appears on Screen

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. Communication Line Check 1 
    1. Disconnect NAVI control unit connector, display unit connector and NAVI switch connector.
    2. Check the following.
      • Continuity between NAVI control unit and display unit.
      Fig 1: Continuity Check Between NAVI Control Unit And Display Unit Table
      G02159182Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: Checking Continuity Between NAVI Control Unit And Display Unit
      G02159183Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Continuity between NAVI control unit harness connector M58 terminal 33 (G), and NAVI switch harness connector M37 terminal 5 (G).
      1. Continuity should exist. 
      Fig 3: Checking Continuity Between NAVI Control Unit Harness Connector M58 Terminal 33 (G), And NAVI Switch Harness Connector M37 Terminal 5 (G)
      G02159184Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Continuity between NAVI control unit and ground.
      Fig 4: Continuity Check Between NAVI Control Unit And Ground Table
      G02159185Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 5: Checking Continuity Between NAVI Control Unit And Ground
      G02159186Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 2.
    2. NG : Repair harness or connector.
  2. Communication Line Check 2 

    Check the following:

    • Continuity between display unit harness connector M35 terminal 13(R) and NAVI switch harness connector M37 terminal 4(R).
      1. Continuity should exist. 
    • Continuity between display unit harness connector M35 terminal 13(R) and ground.
      1. Continuity should not exist. 

    OK or NG 

    1. OK : GO TO 3.
    2. NG : Repair harness or connector.
    Fig 6: Checking Continuity Between Display Unit Harness Connector M35 Terminal 13(R) And NAVI Switch Harness Connector M37 Terminal 4(R)
    G02159187Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Communication Signal (DISP-NAVI) Check 
    1. Connect NAVI control unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between NAVI control unit harness connector M58 terminal 33 (G) and ground.
      1. Approx. 2.8V 

    OK or NG 

    1. OK : GO TO 4.
    2. NG : Replace NAVI control unit.
    Fig 7: Checking Voltage Between NAVI Control Unit Harness Connector M58 Terminal 33 (G) And Ground
    G02159188Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Communication Signal (NAVI-DISP) Check 
    1. Disconnect NAVI control unit and connect display unit connector.
    2. Turn ignition switch ON.
    3. Check voltage between NAVI control unit harness connector M58 terminal 35 (B) and ground.
      1. Approx. 3.5V 

    OK or NG 

    1. OK : GO TO 5.
    2. NG : Replace display unit.
    Fig 8: Checking Voltage Between NAVI Control Unit Harness Connector M58 Terminal 35 (B) And Ground
    G02159189Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Communication Signal (DISP-SW) Check 

    Check voltage between display unit harness connector M35 terminal 13 (R) and ground.

    1. Approx. 5V 
    2. OK or NG 
    1. OK : GO TO 6.
    2. NG : Replace display unit.
    Fig 9: Checking Voltage Between Display Unit Harness Connector M35 Terminal 13 (R) And Ground
    G02159190Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Communication Signal (Disp-Navi) Check 
    1. Connect NAVI control unit connector and NAVI switch connector.
    2. Push the "INFO" switch.
    3. Turn ignition switch ON.
    4. Check the signal between NAVI control unit harness connector M58 terminal 33 (G) and 31 with CONSULT-II or oscilloscope.
      1. 33 (G) - 31:  Refer to TERMINALS AND REFERENCE VALUE FOR NAVI CONTROL UNIT  .

    OK or NG 

    1. OK : GO TO 7.
    2. NG : Replace NAVI control unit.
    Fig 10: Checking Signal Between NAVI Control Unit Harness Connector M58 Terminal 33 (G) And 31 With CONSULT-II Or Oscilloscope
    G02159191Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Communication Signal (NAVI-DISP) Check 
    1. Push "INFO" switch.
    2. Check the signal between NAVI control unit harness connector M58 terminal 35 (B) and 31 with CONSULT-II or oscilloscope.
      1. 35 (B) - 31:  Refer to TERMINALS AND REFERENCE VALUE FOR NAVI CONTROL UNIT  .

    OK or NG 

    1. OK : GO TO 8.
    2. NG : Replace display unit.
    Fig 11: Checking Signal Between NAVI Control Unit Harness Connector M58 Terminal 35 (B) And 31 With CONSULT-II Or Oscilloscope
    G02159192Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Communication Signal (DISP-SW) Check 
    1. Check the signal between NAVI switch harness connector M37 terminal 4 (R) and ground with CONSULT-II or oscilloscope.
      1. 4 (R) - Ground: Refer to  TERMINALS AND REFERENCE VALUE FOR NAVI SWITCH   . 

    OK or NG 

    1. OK : Replace display unit.
    2. NG : Replace NAVI control unit.
    Fig 12: Checking Signal Between NAVI Switch Harness Connector M37 Terminal 4 (R) And Ground With CONSULT-II Or Oscilloscope
    G02159193Courtesy of NISSAN MOTOR CO., U.S.A.
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