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DTC U1096, Loss Of Serial Communications - IPC: Testing

  1. If multiple class 2 codes are set as current (i.e., U1300, U1301, U1088 or U1153), check for an intermittent short to ground or battery in Purple wire between individual control modules.
  2. If DTC is current, attempt to establish communications with IPC using scan tool. If communication cannot be established, diagnose and repair problem in instrument cluster. See appropriate INSTRUMENT PANEL article. If communication can be established, replace PZM.
  3. If DTC is history, check for intermittent open in Purple wire between IPC and individual control modules.
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