{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"BE","section_name":"Body Electrical System","page":103,"pages_in_section":121,"title":"Body Electrical System","section_header":"Body Electrical System — Radio, Stereo Tape Player and Antenna","ocr_text":"BODY ELECTRICAL SYSTEM — Radio, Stereo Tape Player and Antenna                BE-103\n\n(b) Tape player okay but no sound from AM and FM or\n    either one.\n    Possible causes:\n    • Antenna disconnected\n    • Antenna plug not properly connected\n    • Defective antenna\n    • Defective antenna booster\n    • Defective antenna cable\n    • Defective radio or tape player\n    • Blown HAZ-HORN fuse\n    • Short circuit or broken wire in wire harness for\n      back-up power source\n\nTEST 1\n\nIs radio electronic search\ntype? → Yes → Is either AM or FM okay? → Yes → Proceed to Test 2.\n  ↓\n No                                           ↓\n                                              No\nProceed to Test 3. ←————————————————————————\n\nTEST 2\n\nCheck HAZ-HORN fuse → OK → Is there back-up power to connectors\n  ↓                         behind radio? → Yes → Proceed to Test 3.\n  ↓                                         ↓                    ↑\n  ↓                                         No                   No\n  ↓                         Inspect and repair back-up power      ↓\nBlown                       wire harness.                         ↓\n  ↓                                                               ↓\nReplace fuse. → OK ——————————————————————————————————→ ⊙ → OK\n  ↓\nBlows again\n  ↓\nCheck for short circuit in back-up\npower source wire harness. → OK → Replace radio.\n  ↓\nShort\n  ↓\nInspect and repair wire harness\nfor back-up power source.\n\nNOTE: Back-up power refers to the storage voltage for\n      preset tuning. This is applied even when the ignition switch\n      is 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