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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Parking License & Tail Lamps >> Parking, License Plate And Tail Lamps >> No Lamps Operate (Including Headlamps)

No Lamps Operate (Including Headlamps)

  1. CHECK FUSE 
    Fig 1: Checking Headlamp Battery Saver Control Unit Fuse
    G02341155Courtesy of NISSAN MOTOR CO., U.S.A.

    Refer to "WIRING DIAGRAM - TAIL/L - ".

    OK or NG 

    1. OK: GO TO 2.
    2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
  2. CHECK HEADLAMP BATTERY SAVER CONTROL UNIT POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect headlamp battery saver control unit connector.
    3. Check voltage between headlamp battery saver control unit harness connector M34 terminal 7 (Y/G) and ground.
      1. 7 (Y/G) - Ground: Battery voltage should exist. 
      Fig 2: Checking Voltage Between Headlamp Battery Saver Control Unit Harness Connector And Ground
      G02341156Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Check harness for open or short headlamp battery saver control unit and fuse.
  3. CHECK HEADLAMP BATTERY SAVER CONTROL UNIT GROUND CIRCUIT 

    Check continuity between headlamp battery saver control unit harness connector terminals and ground.

    Fig 3: Checking Continuity Between Headlamp Battery Saver Control Unit Harness Connector Terminals And Ground (1 Of 2)
    G02341158Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Checking Continuity Between Headlamp Battery Saver Control Unit Harness Connector Terminals And Ground (2 Of 2 )
    G02341157Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair harness.
  4. CHECK LIGHTING SWITCH 

    Check continuity of lighting switch. Refer to "Switch Circuit Inspection ".

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Replace lighting switch.
  5. CHECK LIGHTING SWITCH POWER SUPPLY CIRCUIT 1 
    1. Disconnect headlamp battery saver control unit connector and lighting switch connector.
    2. Check continuity between headlamp battery saver control unit harness connector M33 terminal 5 (L) and lighting switch harness connector M55 terminal 11 (L).
      1. 5 (L) - 11 (L): Continuity should exist. 
      Fig 5: Checking Continuity Between Headlamp Battery Saver Control Unit Harness Connector And Lighting Switch Connector Power Supply Circuit 1
      G02341159Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between headlamp battery saver control unit harness connector M33 terminal 5 (L) and ground.
      1. 5 (L) - Ground: Continuity should not exist. 

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Repair harness or connector.
  6. CHECK LIGHTING SWITCH POWER SUPPLY CIRCUIT 2 
    1. Check continuity between headlamp battery saver control unit harness connector M34 terminal 13 (L) and lighting switch harness connector M55 terminal 11 (L).
      1. 13 (L) - 11 (L): Continuity should exist. 
      Fig 6: Checking Continuity Between Headlamp Battery Saver Control Unit Harness Connector And Lighting Switch Connector Power Supply Circuit 2
      G02341160Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Check continuity between headlamp battery saver control unit harness connector M34 terminal 13 (L) and ground.
      1. 13 (L) - Ground: Continuity should not exist. 

    OK or NG 

    1. OK: GO TO 7.
    2. NG: Repair harness or connector.
  7. CHECK LIGHTING SWITCH GROUND CIRCUIT 

    Check continuity between lighting switch harness connector M55 terminal 5 (B) and ground.

    1. 5 (B) - Ground: Continuity should exist. 
    Fig 7: Checking Continuity Between Lighting Switch Harness Connector And Ground
    G02341161Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: Replace headlamp battery saver control unit.
    2. NG: Repair harness.
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