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Home >> Infiniti >> 2006 >> Q45 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiper, Washer & Horn >> Front Wiper And Washer System (With Rain Sensor) >> Sensitivity of Rain Sensor Cannot be Controlled

Sensitivity of Rain Sensor Cannot be Controlled

  1. CHECK INTERMITTENT WIPER VOLUME INPUT SIGNAL 

    With CONSULT-II 

    1. Select "IVMS" on CONSULT-II. And select "WIPER" on "SELECT TEST ITEM" screen.
    2. Select "DATA MONITOR" on "SELECT DIAG MODE" screen.
    3. Make sure that "INT RESIST" changes in order from approx. 0 to 1 kohm according to operation of intermittent wiper volume.

      Short interval: Approx. 0 kohm 

      Long interval: Approx. 1 kohm 

      Fig 1: CONSULT II DATA MONITOR Screen
      G04131372Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch ON.
    2. Check voltage between BCM harness connector M4 terminal 48 and ground while turning intermittent wiper volume.

      Short interval: Approx. 0 V 

      Long interval: Approx. 3.6 V 

    OK or NG 

    • OK: Replace BCM.
    • NG: GO TO 2.
  2. CHECK FRONT WIPER SWITCH 

    Check front wiper switch. Refer to , "FRONT WIPER SWITCH INSPECTION ".

    OK or NG 

    • OK: Check the following.
      • Harness for open or short between BCM and intermittent wiper volume
      • Front wiper switch ground circuit
    • NG: Replace front wiper switch. Refer to , "REMOVAL AND INSTALLATION OF FRONT WIPER SWITCH ".
      Fig 2: Checking Voltage Between BCM Harness Connector M4 Terminal 48 And Ground
      G04131373Courtesy of NISSAN MOTOR CO., U.S.A.