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Home >> Nissan-Datsun >> 2012 >> Sentra Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing (MR20DE) (CALIFORNIA) >> 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. Check "LOAD SIGNAL" in "DATA MONITOR" mode with CONSULT under the following conditions.
    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 under the following conditions.

    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 under the following conditions.

    Condition HEATER FAN SW
    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) .

    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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