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Home >> Infiniti >> 2004 >> G35 x >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> 2004 - Headlamp (For USA) - Sedan >> Headlamp (For USA) >> Preliminary Check >> Check Power Supply And Ground Circuit

Check Power Supply And Ground Circuit

  1. CHECK FUSE 
    • Check fuses for blown-out.
      Fig 1: Power Source Unit Table
      G02526535Courtesy of NISSAN MOTOR CO., U.S.A.

    Refer to "Wiring Diagram - H/LAMP -  ".

    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. Refer to SYSTEM WIRING DIAGRAMS .
  2. CHECK POWER SUPPLY CIRCUIT 
    1. Disconnect BCM connector.
    2. Check voltage between BCM harness connector and ground.
      Fig 2: Terminals Voltage Specification Chart
      G02526536Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Voltage Between BCM Harness Connector And Ground
      G02526537Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Check harness for open or short between BCM and fuse.>
  3. CHECK GROUND CIRCUIT 

    Check continuity between BCM harness connector and ground.

    Fig 4: Terminal Continuity Specification Chart
    G02526538Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 5: Checking Continuity Between BCM Harness Connector And Ground
    G02526539Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: INSPECTION END
    2. NG: Check ground circuit harness.