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Power Window Systems Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC) located under steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition on. Attempt to establish communication with the Driver and Passenger Door Control Modules (DDM/PDM). If scan tool communicates with both DCMs, go to next step. If scan tool does not communicate with all DCMs, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, select DISPLAY DTCs function for DDM and PDM. If scan tool displays any DTCs, Retrieve DTCs and perform appropriate test in POWER WINDOWS - CORVETTE article. If scan tool does not display and DTCs, go to POWER WINDOWS - CORVETTE article and diagnose by symptom.
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