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Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Throttle body
    • Battery junction box (BJB) fuse 26 (10A)
    • Wiring, terminals or connectors
    • Speed control switch(es)
    • Clutch pedal speed control deactivator switch (manual transaxle)
    • Speed control deactivator switch (part of the stoplamp switch)
    • Stoplamp switch
    • PCM
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. Verify the speedometer operates correctly without speed control by test driving the vehicle. If the speedometer does not operate correctly, refer to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article.
  5. Verify the parking brake warning indicator is operating correctly. If the parking brake warning indicator is not operating correctly, refer to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article.
  6. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    7. NOTE: The vehicle communication module (VCM) LED prove-out confirms voltage and ground from the DLC are provided to the VCM.
  7. If the scan tool does not communicate with the VCM:
  8. If the scan tool does not communicate with the vehicle:
    • Verify the ignition key is in the ON position.
    • Verify the scan tool operation with a known good vehicle.
    • Refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the PCM.
  9. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
    • If the network test passes, retrieve and record the continuous memory DTCs.
  10. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  11. If no DTCs related to the concern are retrieved, go to Symptom Chart .
  12. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
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