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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information And Procedures >> Instrument Cluster Programming Malfunction (With UDD only) >> Circuit/System Testing

Circuit/System Testing

    NOTE:

    This procedure should only be completed when the Instrument Cluster fails to read the USB thumb drive during a USB programming event.

  1. Verify the USB cable is properly connected and there is no damage to the cable or connections.
    • If connection problems or cable damage is noted. 

      Perform the appropriate repair or replacement to correct any issues.

    • Go to next step: If no connection problems or cable damage is noted. 
  2. Connect the EL-50334-50 to the X22 USB Drive Data Connector and the Instrument Cluster connector X2.
  3. Ignition ON.
  4. Verify the Instrument Cluster completes USB Programming properly following SPS instructions..
    • If Instrument Cluster does not program properly 
    1. Replace the X22 USB Drive Data Connector.
    2. Verify the Instrument Cluster completes USB Programming properly following SPS instructions.
      • If Instrument Cluster does not operate properly 

        Replace the P16 Instrument Cluster.

      • Go to next step: If Instrument Cluster programs properly 

        All OK

    • Go to next step: If Instrument Cluster programs properly 
  5. Replace the USB harness.
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