2008 Infiniti M45 BaseFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

  1. CHECK OVERALL FUNCTION 

    Check ASCD indicator under the following conditions.

    ASCD INDICATION CONDITIONS

    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
    • Vehicle speed: 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 

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.