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Power Seats Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). See Figure . If scan tool powers up, go to next step. If scan tool does not power up, go to SCAN TOOL DOES NOT POWER UP under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - DEVILLE article.
  2. Turn ignition on. Attempt to establish communication with Memory Seat Module (MSM), Driver Door Module (DDM), Driver Door Switch Assembly (DDSA), Passenger Front Door Module (PFDM), Left Rear Door Module (LRDM) and Right Rear Door Module (RRDM). If scan tool communicates with all modules listed, go to next step. If scan tool does not communicate with all modules listed, go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - DEVILLE article.
  3. Select display DTCs function for each module listed in step  2 . If any DTCs are set for any module listed, go to next step. If no DTCs are set for any module listed, attempt to diagnose by symptom. See SYSTEM TESTS  .
  4. If scan tool does not display any DTCs that begin with "U", go to next step. If scan tool displays any DTCs that begin with "U", go to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - DEVILLE article.
  5. If scan tool displays DTC B1000, B1004, B1007 or B1009, go to DIAGNOSTIC TESTS in BODY CONTROL MODULES - DEVILLE article. If scan tool does not display DTC B1000, B1004, B1007 or B1009, go to next step.
  6. If scan tool displays DTC B1327 or B1328, go to DIAGNOSTIC TESTS in SELF-DIAGNOSTIC SYSTEM - DEVILLE article. If scan tool does not display DTC B1327 or B1328, go to MEMORY SEAT MODULE DIAGNOSTIC TROUBLE CODES  table.
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