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Home >> Chevrolet >> 2019 >> Sonic LS, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gauges >> Diagnostic Information and Procedures >> Speedometer and/or Odometer Malfunction >> Circuit/System Testing

Circuit/System Testing

NOTE:
  • Circuit/System Verification must be performed before proceeding with Circuit/System Testing.
  • If there are multiple modules not original to the vehicle and are not new correctly configured service parts, SPS may not be able to proper read or recover the vehicle odometer value. Follow government rules and documentation (including vehicle identification) regarding inaccurate/unknown odometer values.

Correcting VIN mismatch: Instrument Cluster is Showing "----" (Dashes) odometer lock status is inactive 

  1. Verify the scan tool IPC Odometer Lock Status parameter is Inactive.
    • If the reading is Active 

      Refer to correcting VIN mismatch - Odometer Lock Status Active.

    • Go to next step: If the reading is Inactive 
  2. Verify the scan tool BCM VIN parameter matches the vehicle's VIN placard.
    • If the VIN does not match 

      Reprogram the BCM, then proceed to Step 3.

    • Go to next step: If the VIN matches 
  3. Verify the scan tool Instrument Cluster VIN parameter matches the vehicle's VIN placard.
    • If the VIN does not match 

      Reprogram the instrument cluster. Then proceed with step 4.

    • Go to next step: If the VIN matches 
  4. Ignition ON.
  5. Verify the instrument cluster is displaying the correct value.
    • If the Instrument Cluster is still displaying "----" (dashes) 

      Replace the P16 Instrument Cluster.

    • Go to next step: If the Instrument Cluster is displaying the correct value 
  6. All OK.

Correcting VIN mismatch: Instrument Cluster is Showing "----" (Dashes) odometer lock status is Active 

  1. Verify the scan tool Odometer Lock Status parameter is Active.
    • If the reading is Inactive 

      Refer to Correcting VIN mismatch - Odometer Lock Status Inactive

    • Go to next step: If the reading is Active 
  2. Verify the scan tool Instrument Cluster VIN parameter matches the vehicle's VIN placard.
    • If the VIN does not match 

      Reprogram the Instrument Cluster. Then proceed with step 3.

    • Go to next step: If the VIN matches 
  3. Perform the BCM setup procedure in SPS.
  4. Ignition ON.
  5. Verify the instrument cluster is displaying the correct odometer value.
    • If the instrument cluster is still displaying "----" (dashes) 

      Replace the P16 Instrument Cluster.

    • Go to next step: If instrument cluster is displaying the correct value 
  6. All OK.
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