Jeep Cherokee

 Service Manual

Audio systems » Diagnosis and testing
Audio system

Audio System Diagnosis

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.

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.

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.

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

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.

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.