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No Lamps Operate (Including Headlamps)

  1. CHECK FUSE 

    Check for blown headlamp battery saver control unit fuse.

    FUSE CHECK

    Unit Fuse No.
    Headlamp battery saver control unit 6

    Refer to "WIRING DIAGRAM  ".

    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. Disconnect the headlamp battery saver control unit connector.
    2. Check voltage between headlamp battery saver control unit harness connector M34 terminal 7 (Y/G) and ground.
      1. Battery voltage should exist. 
    Fig 1: Checking Voltage Between Headlamp Battery Saver Control Unit Harness Connector And Ground
    G03142796Courtesy 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.

    HEADLAMP BATTERY SAVER CONTROL UNIT TERMINAL GROUND CONTINUITY

    Terminals Continuity
    (+) (-)
    Connector Terminal (Wire color)
    M33 4 (B) Ground Yes
    M34 11 (B)
    Fig 2: Checking Harness Continuity & Continuity To Ground
    G03142797Courtesy 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 in LIGHTING AND TURN SIGNAL SWITCH - M45 article.

    OK or NG

    1. OK: GO TO 5.
    2. NG: Replace lighting switch.
  5. CHECK LIGHTING SWITCH POWER SUPPLY CIRCUIT 1 
    1. Disconnect the headlamp battery saver control unit connector and the 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. Continuity should exist. 
    3. Check continuity between headlamp battery saver control unit harness connector M33 terminal 5 (L) and ground.
      1. Continuity should not exist. 
    Fig 3: Checking Harness Continuity & Continuity To Ground
    G03142798Courtesy of NISSAN MOTOR CO., U.S.A.

    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. Continuity should exist. 
    2. Check continuity between headlamp battery saver control unit harness connector M34 terminal 13 (L) and ground.
      1. Continuity should not exist. 
    Fig 4: Checking Harness Continuity & Continuity To Ground
    G03142799Courtesy of NISSAN MOTOR CO., U.S.A.

    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. Continuity should exist. 
    Fig 5: Checking Continuity Between Lighting Switch Harness Connector And Ground
    G03142800Courtesy 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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