{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"AB","section_name":"SRS Airbag","page":35,"pages_in_section":90,"title":"Circuit Inspection","section_header":"SRS Airbag — Troubleshooting","ocr_text":"Circuit Inspection\n\nDiag. Code (Normal) Source Voltage Drop\n\nCIRCUIT DESCRIPTION\n\nIn case the battery voltage drops, the voltage increase circuit (DC-DC converter) in the center airbag sensor assembly in case the source voltage drops.\nWhen the battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the voltage of the airbag system to normal voltage.\nThe diagnosis system malfunction display for this circuit is different to other circuits — when the airbag warning light remains lit up and the diagnostic code is a normal code, source voltage drop is indicated.\nMalfunction in this circuit is not recorded in the center airbag sensor assembly, and approx. 10 seconds after the source voltage returns to normal, the airbag warning light automatically goes off.\n\nCode No.\n\n(Normal) Source voltage drop.\n\nDiagnosis\n\nDIAGNOSTIC CHART\n\n1 Preparation.\n\n2 Does airbag warning light turn off after approx. 10 seconds.\n\nNo → Check diagnostic code, and if a malfunction code is output, perform troubleshooting according to malfunction code. If a normal code is output, replace center airbag sensor assembly.\n\nYes ↓\n\nCheck battery and charging system (See page CH-1).\n\nWIRING DIAGRAM\n\nIgnition SW\nAM1\nAM2\n\nCIG\nECU-IG\nIGN\n\nACC\nIG₁\nIG₂\n\nCenter Airbag Sensor Assembly\n\nFusible Link Box\nAM1\nAM2\n\nBattery\n\nABD243","image":"https://tsrm.sasquatchvc.com/images/mk3/AB/AB_035.png","url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AB/35","prev":{"page":34,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AB/34","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/34"},"next":{"page":36,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AB/36","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/36"},"section_url":"https://tsrm.sasquatchvc.com/mk3/tsrm/AB","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/1","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/2","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/3","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/4","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/5","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/6","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/7","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/8","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/9","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/10","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/11","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/12","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/13","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/14","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/15","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/16","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/17","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/18","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/19","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/20","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/21","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/22","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/23","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/24","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/25","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/26","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/27","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/28","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/29","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/30","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/31","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/32","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/33","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/34","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/35","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/36","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/37","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/38","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/39","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/40","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/41","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/42","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/43","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/44","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/45","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/46","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/47","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/48","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/49","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/50","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/51","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/52","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/53","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/54","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/55","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/56","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/57","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/58","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/59","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/60","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/61","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/62","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/63","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/64","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/65","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/66","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/67","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/68","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/69","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/70","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/71","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/72","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/73","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/74","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/75","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/76","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/77","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/78","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/79","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/AB/80","https://tsrm.sasquatchvc.com/api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