2004 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

  1. CHECK OVERALL FUNCTION 

    Check ASCD indicator under the following conditions.

    Fig 1: ASCD Indicator Checking Specifications
    G00787554Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: GO TO 2.
  2. CHECK COMBINATION METER OPERATION 

    Check that combination meter operates normally.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Check combination meter circuit. Refer to WIRING DIAGRAM -- METER -- .
  3. CHECK INDICATOR CIRCUIT 
    1. Turn ignition switch ON.
    2. Check voltage between ECM terminals 24, 25 and ground with CONSULT-II or tester.
    Fig 2: Checking Voltage At ECM
    G00787555Courtesy of NISSAN MOTOR CO., U.S.A.

    Battery voltage should exist. 

    OK or NG 

    1. OK: GO TO  5 .
    2. NG: GO TO 4.
  4. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors F53, M223
    • Harness for open or short between combination meter and ECM
    1. : Repair open circuit or short to ground or short to power in harness or connectors.
  5. 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.