Audio System (If Equipped) Symptom Diagnosis: Radio
AUDIO SYSTEM SYMPTOM DIAGNOSIS - RADIO
| Condition | Possible cause | Correction / Reference Item |
|---|---|---|
| Poor radio reception | Out of service area (Poor location) | - |
| Antenna faulty | Replace antenna. | |
| Antenna amplifier faulty | Replace antenna amplifier. | |
| Electrical part / system faulty | Repair or replace electrical part / system referring to after-mentioned NOTE. | |
| Wiring and/or grounding faulty | Repair circuit. | |
| Radio assembly faulty | Replace radio assembly. | |
| Radio does not operate and speaker does not sound | Circuit fuse(s) blown | Replace fuse(s) and check for short circuit. |
| Wiring and/or grounding faulty | Repair circuit. | |
| Radio assembly faulty | Replace radio assembly. | |
| Radio does not operate, but speaker sound | Wiring and/or grounding faulty | Repair circuit. |
| Radio assembly faulty | Replace radio assembly. | |
| Radio is operative, but all speakers does not sound | Wiring and/or grounding faulty | Repair circuit. |
| Radio assembly faulty | Replace radio assembly. | |
| Individual speaker is noisy or inoperative | Speaker faulty | Replace speaker. |
| Wiring and/or grounding faulty | Repair circuit. | |
| Radio assembly faulty | Replace radio assembly. | |
| Sound quality is poor | Out of service area (Poor location) | - |
| Speaker installed incorrectly | Install correctly. | |
| Speaker faulty | Replace speaker. | |
| Wiring and/or grounding faulty | Repair circuit. | |
| Radio assembly faulty | Replace radio assembly. |
NOTE:
Electronic part / system with undiagnosed problem may cause electromagnetic interference. Electromagnetic interference condition may have poor radio reception. To test for presence of electromagnetic interference in part / system, perform the following procedures.
- Turn ignition switch to OFF.
- Systematically disconnect the electronic part / system connector(s) one at a time.
- Turn ignition switch to ON.
- Check any improvement in radio reception.