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Using Scan Tool

  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 in BODY CONTROL MODULES - CORVETTE article.
  2. Turn ignition on. Attempt to establish communication with the DDM and PDM. If scan tool communicates with both modules, go to next step. If scan tool does not communicate with both door control modules, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article.
  3. Using scan tool, select DISPLAY DTCs function for DDM or PDM. If scan tool displays any DTCs, go to next step. If scan tool does not display and DTCs, diagnose by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  4. Retrieve DTCs and perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  table.
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