2003 Infiniti FX45FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK OVERALL FUNCTION 

    Check ASCD indicator under the following conditions.

    ON BOARD DIAGNOSTIC LOGIC

    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 

    1. OK: INSPECTION END 
    2. NG: GO TO 2.
  2. CHECK DTC 

    Check that DTC U1000 or U1001 is not displayed.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Perform trouble diagnoses for DTC U1000, U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".
  3. CHECK COMBINATION FUNCTION 

    Refer to "COMBINATION METERS .

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Go to "COMBINATION METERS .
  4. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    1. >> 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.