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Home >> Infiniti >> 2006 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> 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 INDICATION

      Condition Indication
      Rear window defogger switch: ON ON
      Rear window defogger switch: OFF OFF
      Fig 1: Consult-II DATA MONITOR Display Screen
      G04075263Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 2.
    2. NG : GO TO  4.
  2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II 

    Check " LOAD SIGNAL" indication under the following conditions.

    LIGHTING SWITCH INDICATION

    Condition Indication
    Lighting switch: ON at 2nd position ON
    Lighting switch: OFF OFF
    Fig 2: Consult-II DATA MONITOR Display Screen
    G04075263Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : GO TO 3.
    2. NG : GO TO  5.
  3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION 

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

    HEATER FAN CONTROL SWITCH INDICATION

    Condition Indication
    Heater fan control switch: ON ON
    Heater fan control switch: OFF OFF
    Fig 3: Consult-II DATA MONITOR Display Screen
    G04075263Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK : INSPECTION END 
    2. NG : GO TO  6.
  4. CHECK REAR WINDOW DEFOGGER SYSTEM 

    Refer to "REAR WINDOW DEFOGGER ".

    1. : INSPECTION END 
  5. CHECK HEADLAMP SYSTEM 

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

    1. : INSPECTION END 
  6. CHECK HEATER FAN CONTROL SYSTEM 

    Refer to "REAR WINDOW DEFOGGER ".

    1. : INSPECTION END 
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