Jeep Cherokee 2000 Service Manual - page 404
Audio System Diagnosis
CONDITION
POSSIBLE CAUSE
CORRECTION
NO AUDIO.
1. Fuse faulty.
2. Radio connector
faulty.
3. Wiring faulty.
4. Ground faulty.
5. Radio faulty.
6. Speakers faulty.
7. Amplifier faulty (if
equipped).
1. Check radio fuses in junction block. Replace fuses, if required.
2. Check for loose or corroded radio connector. Repair, if
required.
3. Check for battery voltage at radio connector. Repair wiring, if
required.
4. Check for continuity between radio chassis and a known good
ground. There should be continuity. Repair ground, if required.
5. See Radio in the Diagnosis and Testing section of this group.
6. See Speaker in the Diagnosis and Testing section of this
group.
7. See Speaker in the Diagnosis and Testing section of this
group.
NO DISPLAY.
1. Fuse faulty.
2. Radio connector
faulty.
3. Wiring faulty.
4. Ground faulty.
5. Radio faulty.
1. Check radio fuses in junction block. Replace fuses, if required.
2. Check for loose or corroded radio connector. Repair, if
required.
3. Check for battery voltage at radio connector. Repair wiring, if
required.
4. Check for continuity between radio chassis and a known good
ground. There should be continuity. Repair ground, if required.
5. See Radio in the Diagnosis and Testing section of this group.
CLOCK WILL
NOT KEEP SET
TIME.
1. Fuse faulty.
2. Radio connector
faulty.
3. Wiring faulty.
4. Ground faulty.
5. Radio faulty.
1. Check ignition-off draw fuse. Replace fuse, if required.
2. Check for loose or corroded radio connector. Repair, if
required.
3. Check for battery voltage at radio connector. Repair wiring, if
required.
4. Check for continuity between radio chassis and a known good
ground. There should be continuity. Repair ground, if required.
5. See Radio in the Diagnosis and Testing section of this group.
POOR RADIO
RECEPTION.
1. Antenna faulty.
2. Ground faulty.
3. Radio faulty.
1. See Antenna in the Diagnosis and Testing section of this
group.
2. Check for continuity between radio chassis and a known good
ground. There should be continuity. Repair ground, if required.
3. See Radio in the Diagnosis and Testing section of this group.
NO/POOR TAPE
OPERATION.
1. Faulty tape.
2. Foreign objects
behind tape door.
3. Dirty cassette tape
head.
4. Faulty tape deck.
1. Insert known good tape and test operation.
2. Remove foreign objects and test operation.
3. Clean head with Mopar Cassette Head Cleaner.
4. Exchange or replace radio, if required.
NO COMPACT
DISC
OPERATION
1. Faulty CD.
2. Foreign material on
CD.
3. Condensation on CD
or optics.
4. Faulty CD player.
1. Insert known good CD and test operation.
2. Clean CD and test operation.
3. Allow temperature of vehicle interior to stabilize and test
operation.
4. Exchange or replace radio, if required.
XJ
AUDIO SYSTEMS
8F - 3
DIAGNOSIS AND TESTING (Continued)