Audio Unit Self-Diagnostic Mode

AUDIO UNIT SELF-DIAGNOSTIC MODE

NOTE: The audio unit self-diagnostic mode will automatically begin once the speaker walk-around test is complete.

1. The audio unit self-diagnostic mode has 6 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 diagnostic trouble codes (DTCs) stored. Refer to the Audio Unit Diagnostic Trouble Code (DTC) Index. If the system is OK, SELF PASS is displayed. Audio Unit Diagnostic Trouble Code (DTC) Index
- Preset button 2 = View/Clear continuous DTCs. NO DTCs is displayed if no DTCs are retrieved. If DTCs 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. DTCS CLEAR is displayed. Audio Unit Diagnostic Trouble Code (DTC) Index
- Preset button 3 = SIGNAL TEST. This test measures the average strength at the current tuner setting.
- Preset button 4 = Software configuration level. This test queries each radio system controller for its software configuration level. SOFT LEVELS is displayed upon completion of the query. Press TUNE > to scroll view the software configuration version level.
- Preset button 5 = DISPLAY TEST. This test lights all the Dual Media Audio Unit display segments for 5 seconds. When the test is complete, DISPLAY TEST is displayed on the bezel.
- Preset button 6 = RADIO CONFIGURATION TEST. While in diagnostic mode, press Preset 6. RADIO CONFIG is displayed. Then press TUNE>. If the EQ download (at supplier plant) option and tuner configuration is not complete, then NO CONFIG is displayed. If EQ download option and tuner configuration is done correctly, then Config 1 (options), Config 2 (tuner setting), and EQ ID (identifier for EQ file downloaded) is displayed.

2. To enter these tests, press the desired preset button while in the speaker walk-around test or while in the self-diagnostic mode.
3. To exit the self-diagnostic mode, turn the ignition switch or the audio unit off.

Diagnostic Tool Diagnostic Procedure

NOTE: The audio unit must be in radio tuner mode to enter the diagnostic tool diagnostics.

1. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.

2. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
3. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- CAN, SCP, or ISO circuit fault; all electronic control units no response/not equipped, refer to Information Bus (Module Communications Network).
- No response/not equipped for audio unit (except navigation), GO to Pinpoint Test A. Test A: No Communication With The Audio Unit - Except Navigation
- No response/not equipped for audio unit (navigation), refer to Navigation System.
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the audio unit.

4. If the DTCs retrieved are related to the concern, go to the Audio Unit Diagnostic Trouble Code (DTC) Index (except navigation) or the Navigation System Module Diagnostic Trouble Code (DTC) Index (navigation). Audio Unit Diagnostic Trouble Code (DTC) Index Navigation System Module Diagnostic Trouble Code (DTC) Index
5. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Symptom Related Diagnostic Procedures