Audio System (If Equipped) Symptom Diagnosis: Radio

AUDIO SYSTEM (IF EQUIPPED) SYMPTOM DIAGNOSIS

Condition	Possible Cause	Action
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 does not operate, but speaker sound	Radio assembly faulty	Replace radio assembly .
Radio is operative, but all speakers does not sound	Wiring and/or grounding faulty	Repair circuit .
Radio is operative, but all speakers does not sound	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.