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Test D: Memory Seat Feature Inoperative

  1. If power seats diagnostic system check has been performed, go to next step. If power seats diagnostic system check has not been performed, go to POWER SEATS DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. If memory seat recall functions operate correctly, problem is intermittent. Check wiring and connectors for poor terminal contact. If functions do not operate correctly, go to next step.
  3. Install scan tool and display Driver Door Module (DDM) data list. Press appropriate memory select switch. If scan tool indicates switch status is active, go to step  6 . If scan tool does not indicate switch status is active, go to next step.
  4. Disconnect left door switch. Connect fused jumper wire between appropriate memory select switch signal circuit terminal and ground circuit terminal (Black wire) in door switch harness connector. If scan tool indicates switch status is ACTIVE, go to step  8 . If scan tool does not indicate switch status is ACTIVE, go to next step.
  5. Check appropriate memory select switch signal circuit for an open circuit or high resistance. See WIRING DIAGRAMS  . Repair as necessary, then go to step  14 . If circuit is okay, go to step  10 .
  6. Check position sensor/seat motor 5-volt reference circuit (Purple wire) for open circuit or high resistance. Repair as necessary, then go to step  14 . If circuit is okay, go to next step.
  7. Check position sensor/seat motor low reference voltage circuit (Black wire) for an open circuit or high resistance. Repair as necessary, then go to step  14 . If circuit is okay, go to step  12 .
  8. Repair poor connection at left door switch, then go to step  14 . If connection is okay, go to next step.
  9. Replace left door switch. See REMOVAL & INSTALLATION in POWER WINDOWS - CORVETTE article. After repair, go to step  14 .
  10. Repair poor connection at DDM, then go to step  14 . If circuit is okay, go to next step.
  11. Replace DDM. See REMOVAL & INSTALLATION in POWER WINDOWS - CORVETTE article. After repair, go to step  14 .
  12. Repair poor connection at seat control module, then go to step  14 . If connection is okay, go to next step.
  13. Replace seat control module, then go to next step. See SEAT CONTROL MODULE  under REMOVAL & INSTALLATION.
  14. Operate seat and verify repair. If a malfunction is still present, go to step  3 .
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