Audio Unit Self-Diagnostic Mode

AUDIO UNIT SELF-DIAGNOSTIC MODE

NOTE: To enter the speaker walk-around test or audio unit self-diagnostic mode, the audio unit must be turned on and in radio tuner mode (AM/FM).

1. To enter the following tests, press the desired preset button while in the speaker walk-around test or while in the audio unit self-diagnostic mode.
2. To exit the audio unit self-diagnostic mode, turn the key or the audio unit to OFF.
3. If the concern remains and the fault is not detected, GO to Symptom Chart. Symptom Related Diagnostic Procedures
4. The audio unit self-diagnostic mode has 5 tests available:
- Preset Button 1 = Audio internal/external SELF TEST. This test is an on-demand self-test. If SELF FAIL is displayed, press TUNE > to scroll through the DTCs stored. Refer to the Audio Unit Diagnostic Trouble Code (DTC) Index. If the system is OK, SELF PASS will be displayed. Diagnostic Trouble Code Tests and Associated Procedures
- Preset Button 2 = View/clear continuous DTCs. NO DTC'S is displayed if no DTC's are retrieved. If DTC'S FOUND is displayed, press TUNE > to view the DTCs retrieved. Refer to the Audio Unit Diagnostic Trouble Code (DTC) Index. To clear all DTCs, press the EJECT button. DTC'S CLEAR will be displayed. Diagnostic Trouble Code Tests and Associated Procedures
- Preset Button 3 = SIGNAL TEST. This test measures the average strength at the current tuner setting.

- NOTE: Always document and clear DTCs and carry out the audio unit on-demand self-test again.

Preset Button 4 = Software level query. This test queries each audio system controller for its software configuration level. SOFT LEVELS will be displayed upon completion of the query. Press TUNE > to scroll view the software configuration version level.

- Preset Button 5 = DISPLAY TEST. This test will light all the audio unit display segments for 5 seconds. When the test is complete, DISPLAY TEST is displayed on the bezel.

5. To exit the self-diagnostic mode, press the power button on the audio unit or turn the key to the OFF position.