{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"BE","section_name":"Body Electrical System","page":74,"pages_in_section":116,"title":"Inspection of parking brake switch circuit.","section_header":"Body Electrical System — Cruise Control System","ocr_text":"H  Inspection of parking brake switch circuit.\n\nTurn ignition switch off.\n\nALTERNATOR\n\nINSPECT ALTERNATOR OPERATION\nIs alternator operation normal?\n(See page CH-4)\n\nNo → Replace alternator.\n\nYes ↓\n\nBRAKE FLUID LEVEL WARNING SWITCH\n\nINSPECT GROND CONNECTION\nDisconnect connector from brake fluid level warning switch. Is there continuity between terminal 2 of wire harness connector and body ground?\n\nNo → • Open circuit in wire harness between terminal 2 and body ground.\n       • Body ground faulty.\n\nYes ↓\n\nINSPECT BRAKE WARNING SWITCH\nIs brake fluid level warning switch operation normal?\n(See page BE-43)\n\nNo → Replace brake warning switch.\n\nYes ↓\n\nConnect the connector to brake warning switch.\n\nPARKING BRAKE SWITCH\n\nINSPECT PARKING BRAKE SWITCH OPERATION\nDisconnect connector from parking brake switch.\nIs parking brake switch operation normal?\n(See page BE-82)\n\nNo → Replace parking brake switch.\n\nYes ↓\n\nConnect connector to parking brake switch.\n\nCOMPUTER\n\nDisconnect connector from computer and inspect connector on wire harness side as follows.\n\nRemove CHARGE fuse and ignition switch turned on.\n\nIs there no voltage between terminal 12 and body ground with parking brake pulled up?\n\nNo → Open circuit in wire harness between terminal 12 of computer and terminal 1 of parking brake switch.\n\nYes ↓\n\nIs there battery voltage between terminal 12 and body ground with parking brake released?\n\nNo → Short circuit in wire harness between terminal 12 of computer and terminal 1 of parking brake switch, terminal 1 of brake fluid level warning switch or terminal 2 of alternator.\n\nYes ↓\n\nReplace 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