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).

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.
To exit the audio unit self-diagnostic mode, turn the key or the audio unit to OFF.
If the concern remains and the fault is not detected, GO to SYMPTOM CHART .
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.
- 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 will be displayed.
- Preset Button 3 = SIGNAL TEST. This test measures the average strength at the current tuner setting.
- 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.
To exit the self-diagnostic mode, press the power button on the audio unit or turn the key to the OFF position.

AUDIO UNIT DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC	Description	Action
B1317	Battery Voltage High	CHECK the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If no concerns are found, GO to PINPOINT TEST A .
B1318	Battery Voltage Low	CHECK the charging system. REFER to CHARGING SYSTEM - GENERAL INFORMATION . If no concerns are found, GO to PINPOINT TEST A .
B1342	ECU is Faulted	CLEAR the DTC. CARRY OUT the self-test. If DTC B1342 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation.
B2406	Audio Disc CD Player Internal Fault	CLEAR the DTC. CARRY OUT the self-test. If DTC B2406 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation.
B2477	ECU Configuration Failure	CLEAR the DTC. CARRY OUT the self-test. If DTC B2477 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation.
B2924	Audio Button Stuck	INSPECT the audio unit for a stuck button and REPAIR the concern, if possible. CLEAR the DTC. CARRY OUT the self-test. If DTC B2924 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation.
B2965	Audio System Speaker Circuit Fault	If there is no sound from all speakers, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation after the repair. Otherwise, GO to PINPOINT TEST C .