Reading and Clearing Diagnostic Trouble Codes

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

The self-diagnostic mode can only be entered while in the speaker walk-around test.
1. To enter the speaker walk-around test, press preset buttons 3 and 6 simultaneously, hold approximately three seconds and release.
2. The speaker walk-around test stops at each speaker and applies sound to each speaker for about one to two seconds. Each speaker is tested and shown on the display in the following sequence: RF, LF, LR, RR.
3. To exit the speaker walk-around test, turn the ignition switch off, turn the audio unit off, or press preset button 1 for "DIA".
4. The self-diagnostic mode has six manual tests available:
^ Preset button 1 = ENTER DIAGNOSTICS. This test enters diagnostics from the speaker walk-around test. Metrics are available with SEL and ON buttons indicating time played in AM/FM, media, number of buttons pressed, etc.
^ Preset button 2 = EEPROM BLOCK STATUS. This test shows validity of memory to calibrate clock and seek sensitivity.
^ Preset button 3 = EXIT DIAGNOSTICS.
^ Preset button 4 = Software configuration level. This test queries each radio system controller for its software configuration level.
^ Preset button 5 = DISPLAY TEST. This test lights all the display segments for five seconds and then turns all segments off.
^ Preset button 6 = RAM CONTENTS READOUT. To enter these tests, press preset button 1 while in the speaker walk-around test, then the desired preset button.

NOTE: Always document, clear, and carry out the self-test again.

5. To exit the self-diagnostic mode, turn the ignition switch off or the audio unit off.
6. If the concern remains and the fault is not detected, proceed to the Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures