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Retained Accessory Power Diagnostic System Check

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to Data Link Connector (DLC). DLC is located below driver 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.
  2. Turn ignition switch to RUN position. Using scan tool, attempt to communicate with Dash Integration Module (DIM) and Rear Integration Module (RIM). See CLASS 2 SERIAL DATA LINE  under DESCRIPTION & OPERATION. If scan tool communicates with DIM and RIM, go to next step. If scan tool does not communicate with DIM and RIM, perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, select DISPLAY DTCs for DIM and RIM. If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, repair retained accessory power by symptom. See SYSTEM TESTS .
  4. If scan tool does not display any DTCs which begin with "U", go to next step. If scan tool displays any DTCs which begin with "U", perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  5. If scan tool displays DTC B1327, perform appropriate test. See DTC B1327: BATTERY/SOURCE VOLTAGE LOW under DIAGNOSTIC TESTS in GENERATORS & REGULATORS - AURORA article in ELECTRICAL. If scan tool displays any other DTC, perform appropriate. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
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