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Memory 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 Door Module (DDM), Passenger Door Module (PDM), Seat Control Module (SCM), Body Control Module (BCM) and Powertrain Control Module (PCM). If scan tool communicates with all systems, go to next step. If scan tool does not communicate with all systems, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, retrieve DTCs from modules listed in step  2 . If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, diagnose problem by symptom. See POWER SEATS - CORVETTE, POWER MIRRORS - CORVETTE or STEERING COLUMN SWITCHES - CORVETTE article.
  4. If scan tool displays any DTCs which begin with "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. If scan tool does not display any DTCs that begin with "U", go to next step.
  5. If DTC B0605 is not set, go to next step. If DTC B0605 is set, go to DTC B0605: BCM INTERNAL MEMORY MALFUNCTION  under DIAGNOSTIC TESTS.
  6. If DTC P0562 or P0563 are set, see GENERATORS & REGULATORS - CORVETTE article in STARTING & CHARGING SYSTEMS. If DTC P0562 or P0563 are not set, diagnose system by symptom. See GENERATORS & REGULATORS - CORVETTE article in STARTING & CHARGING SYSTEMS.
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