Any diagnosis of the Audio system should begin with the use of the scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic Service Manual.
For complete circuit diagrams, refer to the appropriate wiring information.
WARNING: On vehicles equipped with air bags, (refer to electrical/restraints) before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury.
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Audio System Diagnosis |
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CONDITION |
POSSIBLE CAUSE |
CORRECTION |
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NO AUDIO. |
1. Fuse inoperative. |
1. Check radio fuse and Ignition-Off Draw fuse in Power Distribution Center. Replace fuses, if required. |
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2. Radio connector damaged. |
2. Check for loose or corroded radio connector. Repair, if required. |
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3. Wiring damaged. |
3. Check for battery voltage at radio connector. Repair wiring, if required. |
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4. Ground damaged. |
4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. |
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5. Speakers inoperative. |
5. Refer to speaker diagnosis. |
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6. Radio inoperative. |
6. Exchange or replace radio, if required. |
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NO DISPLAY. |
1. Fuse inoperative. |
1. Check radio fuse and Ignition-Off Draw fuse in Power Distribution Center. Replace fuses, if required. |
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2. Radio connector damaged. |
2. Check for loose or corroded radio connector. Repair, if required. |
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3. Wiring damaged. |
3. Check for battery voltage at radio connector. Repair wiring, if required. |
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4. Ground damaged. |
4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. |
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5. Radio inoperative. |
5. Exchange or replace radio, if required. |
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POOR RADIO RECEPTION. |
1. Antenna inoperative. |
1. See antenna diagnosis, in this group. Repair or replace antenna, if required. |
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2. Ground damaged. |
2. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. |
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3. Radio inoperative. |
3. Exchange or replace radio, if required. |
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NO COMPACT DISC/DVD OPERATION |
1. CD/DVD damaged. |
1. Insert known good CD/DVD and test operation. |
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2. Foreign material on CD/DVD. |
2. Clean CD/DVD and test operation. |
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3. Condensation on CD/DVD or optics. |
3. Allow temperature of vehicle interior to stabilize and test operation. |
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4. Radio inoperative |
4. Exchange or replace radio, if required. |
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