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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Component Testing (Qr25DE) >> 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. Check "LOAD SIGNAL" in "DATA MONITOR" mode with CONSULT-III under the following conditions.
      LOAD SIGNAL CONDITION REFERENCE

      Condition LOAD SIGNAL
      Lighting switch: ON at 2nd position ON
      Lighting 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" in "DATA MONITOR" mode with CONSULT-III under the following conditions.

    LOAD SIGNAL CONDITION REFERENCE

    Condition LOAD SIGNAL
    Rear window defogger switch: ON ON
    Rear window defogger switch: OFF OFF

    OK or NG 

    OK: GO TO 3.

    NG: GO TO  5.

  3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION 

    Check "HEATER FAN SW" in "DATA MONITOR" mode with CONSULT-III under the following conditions.

    HEATER FAN SW CONDITION REFERENCE

    Condition LOAD SIGNAL
    Heater fan control switch: ON ON
    Heater fan control switch: OFF OFF

    OK or NG 

    OK: INSPECTION END. 

    NG: GO TO  6.

  4. CHECK HEADLAMP SYSTEM 

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

    : INSPECTION END 

  5. CHECK REAR WINDOW DEFOGGER SYSTEM 

    Refer to "REAR WINDOW DEFOGGER ".

    : INSPECTION END 

  6. CHECK HEATER FAN CONTROL SYSTEM 

    Refer to "TROUBLE DIAGNOSIS ".

    : INSPECTION END 

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