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Home >> Infiniti >> 2007 >> M35 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing (VQ35DE) >> Electrical Load Signal >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I 
    1. Turn ignition switch ON.
    2. Connect CONSULT-II and select "DATA MONITOR" mode.
    3. Select "LOAD SIGNAL" and check indication under the following conditions.
      REAR WINDOW DEFOGGER SWITCH CONDITION

      Condition Indication
      Rear window defogger switch: ON ON
      Rear window defogger switch: OFF OFF

    OK or NG 

    OK: GO TO 2.

    NG: GO TO  4.

    Fig 1: CONSULT-II Display - DATA MONITOR
    G04900770Courtesy of NISSAN NORTH AMERICA, INC.
  2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II 

    Check "LOAD SIGNAL" indication under the following conditions.

    LIGHTING SWITCH CONDITION CHART

    Condition Indication
    Lighting switch: ON at 2nd position ON
    Lighting switch: OFF OFF

    OK or NG 

    OK: GO TO 3.

    NG: GO TO  5.

    Fig 2: CONSULT-II Display - DATA MONITOR
    G04900770Courtesy of NISSAN NORTH AMERICA, INC.
  3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION 

    Select "HEATER FAN SW" and check indication under the following conditions.

    HEATER FAN CONTROL SWITCH CONDITION CHART

    Condition Indication
    Heater fan control switch: ON ON
    Heater fan control switch: OFF OFF

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO  6.

    Fig 3: CONSULT-II Display - DATA MONITOR
    G04897391Courtesy of NISSAN NORTH AMERICA, INC.
  4. CHECK REAR WINDOW DEFOGGER SYSTEM 

    Refer to "REAR WINDOW DEFOGGER ".

    >> INSPECTION END 

  5. CHECK HEADLAMP SYSTEM 

    Refer to "HEADLAMP (FOR USA) - XENON TYPE - ", "HEADLAMP (FOR USA) - CONVENTIONAL TYPE - " or "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM - ".

    >> INSPECTION END 

  6. CHECK HEATER FAN CONTROL SYSTEM 

    Refer to "TROUBLE DIAGNOSIS ".

    >> INSPECTION END