BODY ELECTRICAL SYSTEM — Radio, Stereo Tape Player and Antenna BE-103 (b) Tape player okay but no sound from AM and FM or either one. Possible causes: • Antenna disconnected • Antenna plug not properly connected • Defective antenna • Defective antenna booster • Defective antenna cable • Defective radio or tape player • Blown HAZ-HORN fuse • Short circuit or broken wire in wire harness for back-up power source TEST 1 Is radio electronic search type? → Yes → Is either AM or FM okay? → Yes → Proceed to Test 2. ↓ No ↓ No Proceed to Test 3. ←———————————————————————— TEST 2 Check HAZ-HORN fuse → OK → Is there back-up power to connectors ↓ behind radio? → Yes → Proceed to Test 3. ↓ ↓ ↑ ↓ No No ↓ Inspect and repair back-up power ↓ Blown wire harness. ↓ ↓ ↓ Replace fuse. → OK ——————————————————————————————————→ ⊙ → OK ↓ Blows again ↓ Check for short circuit in back-up power source wire harness. → OK → Replace radio. ↓ Short ↓ Inspect and repair wire harness for back-up power source. NOTE: Back-up power refers to the storage voltage for preset tuning. This is applied even when the ignition switch is OFF.