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Pinpoint Test L: Inaccurate Speedometer Reading

  1. L1 CHECK SPEEDOMETER OPERATION 
    • Connect the diagnostic tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
    • Trigger the instrument cluster active command SPDOMETER. Scroll to 0%, 50%, and 100%.
    • Did the speedometer display read 0 at 0%, half the speedometer display at 50%, and the full speedometer display at 100%? 
    1. Yes:  REFER to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .
    2. No:  GO to L2.
  2. L2 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect all the instrument cluster connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all the instrument cluster connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes:  INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER  . TEST the system for normal operation.
    2. No:  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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