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Door Systems Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). DLC is located below left side of instrument panel, near steering column. If scan tool powers up, go to next step. If scan tool does not power up, perform TEST A: SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article.
  2. Turn ignition switch to RUN position, turn headlights switch to ON. Attempt to establish communications with Driver Door Module (DDM), Powertrain Control Module (PCM) and Rear Integration Module (RIM). If scan tool communicates with each module, go to next step. If scan tool does not communicate with each module, perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article.
    3. CAUTION: Engine may start during following step. Turn ignition switch to OFF position, as soon as crank power mode is observed.
  3. Using scan tool, access class 2 power mode from diagnostic circuit check. Cycle ignition switch through all positions while observing ignition switch power mode parameter. If parameter matches ignition switch positions, go to next step. If parameter does not match ignition switch positions, perform TEST C: POWER MODE MISMATCH under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE.
  4. Using scan tool, select display DTC function for DDM. Record all displayed DTCs, status of displayed DTCs and module that set DTC. If any DTCs are retrieved, go to next step. If no DTCs are retrieved, repair power windows by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  5. If scan tool displays any codes which begin with "U", perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article. If scan tool does not display any codes which begin with "U", go to next step.
  6. If scan tool displays DTC B1000, B1004, B1007 or B1009, perform appropriate test in accordance with DTC retrieved. See BODY CONTROL MODULES - SEVILLE. If scan tool does not display DTC B1004, B1007 or B1009, go to next step.
  7. If scan tool displays DTC B1327 or B1328, perform appropriate test in accordance with DTC retrieved. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If scan tool displays any other DTCs, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  8. If scan tool displays B2757, B2762, 2767 or B2772, perform appropriate test in accordance with DTC retrieved. See POWER SEATS - SEVILLE. If scan tool displays any other DTCs, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
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