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Home >> Nissan-Datsun >> 2007 >> Altima Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing (Qr25DE) (Except For CALIFORNIA) >> Electrical Load Signal >> Diagnosis Procedure

Diagnosis Procedure

  1. INSPECTION START

    Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to "COMPONENT FUNCTION CHECK ".

    Which circuit is related to the incident? 

    Rear window defogger: GO TO 2.

    Headlamp: GO TO  3.

    Heater fan: GO TO  4.

  2. CHECK REAR WINDOW DEFOGGER SYSTEM

    Refer to "SYSTEM DIAGRAM ".

    : INSPECTION END

  3. CHECK HEADLAMP SYSTEM

    Refer to "SYSTEM DIAGRAM " (XENON TYPE) or "SYSTEM DIAGRAM " (HALOGEN TYPE).

    : INSPECTION END

  4. CHECK HEATER FAN CONTROL SYSTEM

    Refer to "DIAGNOSIS PROCEDURE ".

    : INSPECTION END

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