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Audio System Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). See Figure . DLC is located under left side of instrument panel. If scan tool powers up, go to next step. If scan tool does not power up, see TEST B: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition switch to ON position. Using scan tool, attempt to communicate with radio. If scan tool communicates with radio, go to next step. If scan tool does not communicate with radio, see TEST A: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Select DISPLAY DTCS function on scan tool for radio. If scan tool displays any radio DTCs, go to next step. If scan tool does not display any radio DTCs, repair audio system by symptom as necessary.
  4. If scan tool displays any DTCs which begin with a "U", see TEST A: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. If scan tool does not display any DTCs which begin with a "U", go to next step.
  5. If scan tool displays DTC B1000, B1369, B1374 or B1379, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If scan tool does not display DTC B1000, B1369, B1374 or B1379, go to next step.
  6. If scan tool displays DTC B1001 or B1780, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If scan tool does not display DTC B1001 or B1780, go to next step.
  7. If scan tool displays DTC B1327, no repair is necessary. If scan tool does not display DTC B1327, repair audio system by symptom as necessary.
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