{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"BE","section_name":"Body Electrical Systems","page":86,"pages_in_section":203,"title":"Troubleshooting","section_header":"Body Electrical System — Audio System","ocr_text":"BE–86\nBODY ELECTRICAL SYSTEM – AUDIO SYSTEM\n\nTROUBLESHOOTING\n\nNOTICE: When replacing the internal mechanism (computer part) of the audio system, be careful that no part of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the replacement part (spare part).\nHINT: This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during system operation and is based on the assumption that the cause of trouble lies with the system components (except for the wires and connectors, etc.).\nAlways inspect the trouble taking the following items into consideration.\n• Open or short circuit of the wire harness\n• Connector or terminal connection fault\n• Troubleshooting items marked *indicate that \"Troubleshooting for ANTI–THEFT SYSTEM\" should be carried out first.\n\nProblem | No.\n\nRadio\nNo power coming in. | *1\nPower coming in, but radio not operating. | 2\nNoise present, but AM–FM not operating. | 3\nEither speaker does not work. | 4\nWoofer speaker does not work. | 5\nEither AM or FM does not work. | 6\nReception poor (Volume faint). | 6\nFew preset tuning bands. | 6\nSound quality poor. | 7\nCannot set station select button. | 8\nPreset memory disappears. | 8\n\nTape player\nCassette tape cannot be inserted. | 9\nCassette tape inserts, but no power. | *10\nPower coming in, but tape player not operating. | 11\nEither speaker does not work. | 12\nWoofer speaker does not work. | 13\nSound quality poor (Volume faint). | 14\nTape jammed, malfunction with tape speed or auto–reverse. | 15\nAPS, SKIP, RPT buttons not operating. | 16\nCassette tape will not eject. | *17\n\nCD player\nCD cannot be inserted. | 18\nCD inserts, but no power. | 19\nPower coming in, but CD player not operating. | 20\nSound jumps. | 21\nSound quality poor (Volume faint). | 22\nEither speaker does not work. | 23\nWoofer speaker does not work. | 24\nCD will not eject. | 25\n\nAmplifier\nNo power coming in. | 26\nPower coming in, but woofer amplifier (Power amplifier) not operating. | 27\nEither speaker does not work. | 28\nWoofer speaker does not work. | 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