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Diagnosis And Testing: Audio/Video

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Any diagnosis of the Audio system should begin with the use of scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic Service information. 

For complete circuit diagrams, refer to the appropriate SYSTEM WIRING DIAGRAMS article. 

WARNING: On vehicles equipped with airbags, refer to RESTRAINTS - ELECTRICAL DIAGNOSTICS article 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.
AUDIO SYSTEM DIAGNOSIS

CONDITION POSSIBLE CAUSE CORRECTION

NO AUDIO.

1. Fuse inoperative.

1. Check radio fuses in integrated power module (IPM). 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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6. Amplifier inoperative.

6. Perform diagnosis on amplifier. Replace as necessary.

NO DISPLAY.

1. Fuse inoperative.

1. Check radio fuses. 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.

NO MEMORY.

1. Fuse inoperative.

1. Check ignition-off draw fuse. Replace fuse, 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.

POOR RADIO RECEPTION.

1. Antenna or cable damaged or inoperative.

1. Refer to DIAGNOSIS AND TESTING . 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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4. Poor antenna connection at radio or in line.

4. Verify proper connection.

SOUND DISTORTION (VIBRATION FROM SPEAKER AREA, BUZZING - HUMMING

1. Door trim panel loose or missing fasteners.

1. Inspect door trim panel and correct as necessary. Replace any missing fasteners.
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2. Water shield loose or misaligned.

2. Inspect water shield and adjust as required.
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3. Items placed in door trim panel map pockets vibrating or moving from side to side.

3. Remove items from door trim panel. Ensure that vibration is no longer present.

NO/POOR TAPE OPERATION.

1. Tape damaged.

1. Insert known good tape and test operation.
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2. Foreign objects behind tape door.

2. Remove foreign objects and test operation.
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3. Dirty cassette tape head.

3. Clean head with Mopar cassette head cleaner.
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4. Radio inoperative.

4. Exchange or replace radio, if required.

NO COMPACT DISC OPERATION

1. CD damaged.

1. Insert known good CD and test operation. Avoid the use of "home maid" CD's with adhesive labels. The labels may cause disc to become jammed in the radio.
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2. Foreign material on CD.

2. Clean CD and test operation.
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3. Condensation on CD 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.
VIDEO SYSTEM DIAGNOSIS

CONDITION POSSIBLE CAUSES CORRECTION

NO VIDEO (DVD PLAYER WILL NOT LOAD OR EJECT)

1. Fuse inoperative.

1. Check fuses. Replace fuses if required.

2. Loose or damaged DVD player connector

2. Check for loose or corroded DVD player connector (16 pin). Repair or replace as required.

3. Loose or damaged wiring/DVD player inoperative

3. Check pin 1 (B+) and pin 9 (ground) of the 16 pin connector, then check pin 1 (B+) and pin 7 (ground) of the 12 pin connector. If the 16 pin connector does not show voltage, the 12 pin connector will not show voltage (the 12 pin is fed from the 16 pin). If voltage is OK on the 16 pin, but not present on the 12 pin, unplug the 12 pin harness from the player and check the connector pins on the back of the player. If voltage is present on the 12 pin connector, the screen or the 12 pin harness should be replaced. If there is still no voltage on the 12 pin connector, the DVD player should be replaced.

4. Ground connection damaged

4. Check for continuity between DVD player and a known good ground. There should be continuity. Repair ground if required.

5. DVD player damaged

5. Exchange or replace DVD player if required.
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6. DVD damaged.


Avoid using CD's or DVD's that have adhesive type labels, as they may cause the disc to become jammed.

6. Insert known good DVD and test operation.
NO DISPLAY. AUDIO HEARD THROUGH SPEAKERS 1. Loose or damaged connectors 1. Check for loose or corroded DVD player connector (12 pin). Check for loose or corroded video screen connector. Repair if required. Check for loose or damaged in-line connector.
- 2. Wiring damaged 2. With harness connected, check for video signal voltage at DVD player and at video screen harness. Place known good DVD into DVD player. Place positive lead of voltmeter on pin 5 (video signal) of the 12 pin connector. Place negative lead on pin 6 (video ground). Readings should be between 0.1v to 2v D.C.
- 3. Video screen damaged 3. Exchange or replace video screen if required.

WHITE DISPLAY

1. Low voltage

1. Check for battery voltage (9v-16v) at DVD player 12 pin connector (pin 1-battery, pin 7-ground). Display will be white if voltage drops below 6v.
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2. Video screen damaged

2. Exchange or replace video screen if required.

DARK OR BRIGHT SPOTS ON SCREEN

1. Brightness setting requires adjustment.

1. Adjust brightness setting of video screen by pressing buttons on side of video screen until desired level is reached. Start with a black screen, then press button up 16-20 times. There are 64 total steps of brightness.

BRIGHT OR DARK DISPLAY

1. Video screen display pixel defect.

1. The acceptable level of dots on the screen is (green-1, red-2) or a total (green+red+blue+white+black) = 8. Replace or exchange video screen if necessary.

VIDEO SELECTIONS DO NOT APPEAR FULL SCREEN WIDTH

1. Aspect ratio is set incorrectly.

1. Using mode button, adjust until video appears correctly.
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2. Some DVD's are two sided. One side is wide screen format and the other is full screen or there may be a wide screen or standard screen format on the disc.

2. Ensure that DVD is inserted correctly.

BUTTONS ON VIDEO SCREEN INOPERATIVE

1. Video screen damaged.

1. Place known good DVD into DVD player. Once image appears on video screen, press top button on side of video screen to adjust width of display. Press bottom buttons to adjust brightness. Once DVD menu appears on video screen, press middle button on video screen. Highlighted selection will begin to play. If any of the buttons do not function, replace or exchange video screen.
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