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Home >> Infiniti >> 2004 >> FX35 RWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiper, Washer & Horn >> Front Wiper And Washer System >> Preliminary Check >> Check Power Supply And Ground Circuit

Check Power Supply And Ground Circuit

  1. Check fuse
    • Check if wiper and washer fuse is blown.
    Fig 1: Checking Fuse Location
    G00730276Courtesy of NISSAN MOTOR CO., U.S.A.

    Refer to WIRING DIAGRAM - WIPER  .

    OK or NG 

    1. OK: GO TO  2 .
    2. NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to:

  2. Check power supply circuit
    1. Disconnect BCM connector.
    2. Check voltage between BCM harness connector terminal and ground.
      Fig 2: Checking BCM Voltage Circuit
      G00730278Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Displaying Power Supply Circuit Specifications
      G00730277Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  3 .
    2. NG: Check harness for open or short between fuse, fusible link and BCM.

  3. Check ground circuit

    Check continuity between BCM harness connector M4 terminals 49 (B), 52 (B) and ground.

    1. 49 (B), 52 (B) - Ground : Continuity should exist. 

    OK or NG 

    1. OK: INSPECTION END
    2. NG: Repair harness or connector.

    Fig 4: Checking Ground Circuit
    G00730279Courtesy of NISSAN MOTOR CO., U.S.A.