Ranger 2WD V6-3.0L (2008)
Speaker: Testing and Inspection
SPEAKER WALK-AROUND TEST - BASE AM/FM AUDIO UNIT
NOTE: The audio unit must be turned on to enter the speaker walk-around test.
1. To enter the test, press and hold preset buttons 3 and 6 simultaneously for approximately 3 seconds, then release.
2. The test applies sound to each speaker for 1-2 seconds. Speakers are tested in the following sequence: RH, LH.
3. To exit the test, turn the key to OFF or turn the audio unit off.
4. If the concern remains and the fault is not detected, GO to Symptom Chart. See: Testing and Inspection/Symptom Related Diagnostic Procedures
SPEAKER WALK-AROUND TEST - ALL EXCEPT BASE AM/FM AUDIO UNIT
NOTE:
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The audio unit must be turned on and in radio tuner mode to enter the speaker walk-around test or self-diagnostic mode.
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The self-diagnostic mode can only be entered while in the speaker walk-around test.
1. To enter the speaker walk-around test, press and hold preset buttons 3 and 6 simultaneously for approximately 3 seconds, then release.
2. The test applies sound to each speaker for 1-2 seconds. Speakers are tested and shown on the display in the following sequence: RF, LF, LR, RR,
SUBWOOFER.
3. To exit the test, turn the key to OFF, turn the audio unit off, or press preset button 1 for diagnostics.
NOTE: Always document, clear, and carry out the self-test again.
4. The self-diagnostic mode has 5 manual tests available:
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Preset button 1 = Enter diagnostics. This test enters diagnostics from the speaker walk-around test. The on-demand self-test of the audio
subsystem is performed. This tests for concerns with random access memory (RAM), read only memory (ROM) or electronically etched
programmable read only memory (EEPROM).
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Preset button 2 = Continuous DTCs. This test enters diagnostics from the speaker walk-around test. This test displays any DTCs currently set.
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Preset button 3 = Signal strength test. This test shows the average signal strength of the currently tuned frequency over a 5-second interval.
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Preset button 4 = Software configuration level. This test queries each audio unit 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, then turns all segments off.
5. To exit the self-diagnostic mode, turn the key to OFF or turn the audio unit off.
6. If the DTCs retrieved are related to the concern, go to DTC Charts. See: Testing and Inspection/Diagnostic Trouble Code Descriptions
7. If the concern remains and the fault is not detected, GO to Symptom Chart. See: Testing and Inspection/Symptom Related Diagnostic Procedures
