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Audible Warnings Diagnostic System Check

  1. Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). If scan tool powers up, go to next step. If scan tool does not power up, see appropriate BODY CONTROL MODULES article.
  2. Turn ignition switch to ON position. Using scan tool, attempt to establish communications with the following modules:
    • Body Control Module (BCM).
    • Instrument Panel Cluster (IPC).
    If scan tool establishes communications with specified modules, go to next step. If scan tool does not establish communications with specified modules, see appropriate BODY CONTROL MODULES article.
  3. Select DISPLAY DTCs function on scan tool for BCM and IPC. If scan tool displays DTCs, go to next step. If scan tool does not display any DTCs, repair by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  4. If scan tool displays DTC B1000 or a DTC which begin with "U", perform appropriate repair. See appropriate BODY CONTROL MODULES article. If other DTCs are displayed, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  table.
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