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Home >> Infiniti >> 2003 >> I35 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0500: Vehicle Speed Sensor >> Diagnostic Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedure

  1. Turn ignition off. Disconnect ECM harness connector. See Figure . Remove instrument cluster. Check continuity of Pink/Blue wire between instrument cluster harness connector M32 terminal No. 32 and ECM harness connector terminal No. 68. See Figure and Fig 1 . Also, check circuit for short to ground and short to voltage. If problem is found, go to next step. If problem is not found, go to step  3 .
  2. Check the following:
    • Check for poor connection at White, 18-pin harness connector F66 terminal No. 2 (Pink/Blue wire). See Figure . Connector is located under instrument panel. See Figure .
    • Check for open or short between instrument cluster and ECM.
    Repair as necessary.
  3. Reconnect all harness connectors. Check speedometer operation. If speedometer operates properly, go to step  5 . If speedometer does not operate properly, go to next step.
  4. Check the following:
    • Check for poor connection at Super Multiple Junction (SMJ) connector M15 terminal 13D (Red wire). See Fig 2 . SMJ connector M15 is located under left side of instrument panel. See Figure .
    • Check for poor connection at White, 20-pin connector M230 terminal No. 2 (Red wire). See Figure . Connector M230 is located under center of instrument panel. See Figure .
    • Check for poor connection at Gray, 8-pin connector F65 terminal No. 3 (Red wire). See Figure . Connector F65 is located on left side of engine compartment. See Figure .
    • Check for open or short between instrument cluster and Vehicle Speed Sensor (VSS).
    • Check for open or short between instrument cluster and ABS/TCS control unit.
    • Check for open or short between VSS, transmission control module and ECM.
    Repair as necessary.
  5. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
Fig 1: Identifying Instrument Cluster Harness Connectors & Terminals
G00012473Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Identifying SMJ Connector M15 & E81 Terminals
G00103813Courtesy of NISSAN MOTOR CO., U.S.A.
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