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Home >> Infiniti >> 2009 >> M45 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - System And Component Testing (VK45DE) >> Electrical Load Signal >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
    1. Turn ignition switch ON.
    2. Select "DATA MONITOR" mode with CONSULT-III.
    3. Select "LOAD SIGNAL" and check indication under the following conditions.
    INDICATION CONDITION CHART

    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.

  2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

    Check "LOAD SIGNAL" indication under the following conditions.

    INDICATION 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.

  3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION

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

    INDICATION 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.

  4. CHECK REAR WINDOW DEFOGGER SYSTEM

    Refer to "WORK FLOW ".

    INSPECTION END 

  5. CHECK HEADLAMP SYSTEM

    Refer to "SYSTEM DESCRIPTION " (For USA) or "SYSTEM DESCRIPTION " (For Canada).

    INSPECTION END 

  6. CHECK HEATER FAN CONTROL SYSTEM

    Refer to "SELF-DIAGNOSIS FUNCTION ".

    INSPECTION END 

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