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Home >> Infiniti >> 2008 >> M35 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VQ35DE) - Component And System Testing >> ASCD Indicator >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK OVERALL FUNCTION 

    Check ASCD indicator under the following conditions.

    ASCD INDICATOR CONDITION CHART

    ASCD INDICATOR CONDITION SPECIFICATION
    CRUISE LAMP
    • Ignition switch: ON
    • MAIN switch: Pressed at the 1st time → at the 2nd time
    ON → OFF
    SET LAMP
    • MAIN switch: ON
    • When vehicle speed is between 40 km/h (25 MPH) and 144 km/h (89 MPH)
    • ASCD: Operating
    ON
    • ASCD: Not operating
    OFF

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 2.

  2. CHECK DTC 

    Check that DTC U1000 or U1001 is not displayed.

    OK or NG 

    OK: GO TO 3.

    NG: Perform trouble diagnosis for DTC U1000, U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".

  3. CHECK DTC WITH "UNIFIED METER AND A/C AMP." 

    Refer to "SELF-DIAG RESULTS ".

    OK or NG 

    OK: GO TO 4.

    NG: GO TO "DTC [B2202] METER COMMUNICATION CIRCUIT ".

  4. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    >> INSPECTION END