E 450 V10-6.8L (2008)
Speaker: Testing and Inspection
SPEAKER WALK-AROUND TEST (ULC AND M100 AUDIO UNITS)
NOTE: The audio unit must be turned on and in radio tuner mode (AM/FM) to enter the speaker walk-around test.
1. To enter the speaker walk-around test, press preset buttons 3 and 6 simultaneously and hold for 3 seconds, then release.
2. The speaker walk-around test applies sound to each speaker for 1-2 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 to OFF, or turn the audio unit off.
SPEAKER WALK-AROUND TEST AND SELF-DIAGNOSTIC MODE (DM100I AND CDX6 AUDIO UNITS)
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 and hold for 3 seconds, then release.
2. The speaker walk-around test applies sound to each speaker for 1-2 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 to OFF, turn the audio unit off, or press preset button 1 for "DIA".
4. NOTE: Always document and clear any DTCs, and carry out the self-test again. If any DTCs are retrieved, refer to the DTC Charts. See: Testing
and Inspection/Diagnostic Trouble Code Descriptions
The Self-Diagnostic Mode has 6 manual tests available:
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Preset button 1 = ENTER DIAGNOSTICS. This test enters diagnostics from the speaker walk-around test. Metrics are available with SEL and
ON buttons indicating various parameters.
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Preset button 2 = EEPROM BLOCK STATUS. This test shows validity of memory to calibrate clock and seek sensitivity.
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Preset button 3 = EXIT DIAGNOSTICS.
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Preset button 4 = SOFTWARE CONFIGURATION LEVEL. This test queries each radio system controller for its software configuration level.
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Preset button 5 = DISPLAY TEST. This test lights all the display segments for 5 seconds and then turns all segments off.
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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.
5. To exit the Self-Diagnostic Mode, turn the ignition switch to OFF or turn the audio unit off.
6. If the concern remains and the fault is not detected, GO to Symptom Chart. See: Testing and Inspection/Symptom Related Diagnostic Procedures
