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Power Mirror Systems Diagnostic System Check

  1. Install scan tool. 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, engine off. Following scan tool manufacturer's instructions, attempt to establish communication with Driver Door Module (DDM) and Passenger Door Module (PDM). If communication with DDM and PDM is established, go to next step. If communication with DDM and PDM is not established, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Select display DTC function for DDM and PDM. Record all displayed DTCs, status of displayed DTCs and module that set the DTC. If DTCs are displayed, perform appropriate test in POWER MIRRORS - CORVETTE article. If no DTCs are displayed, diagnose by symptom. See POWER MIRRORS - CORVETTE article.
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