{"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":47,"pages_in_section":90,"title":"SRS Airbag","section_header":"SRS Airbag - Troubleshooting","ocr_text":"6 Check squib.\n\nCenter Airbag\nSensor Assembly\n\nSpiral\nCable\n\nSteering Wheel\nPad (Squib)\n\nACC     ON\n\nor\n\nE₁         Tc\n\nCode 12\n\nAIRB023\nAIRB139 AIRB257\n\nD (1) Turn ignition switch LOCK.\n(2) Disconnect battery negative (-) terminal cable, and wait at least 20 seconds.\n(3) Connect steering wheel pad (squib) connector.\n(4) Connect negative (-) terminal cable to battery, and wait at least 2 seconds.\n\nC (1) Turn ignition switch ACC or ON, and wait at least 20 seconds.\n(2) Using SST, connect terminals Tc and E₁ of check connector.\nSST 09843-18020\n(3) Check diagnostic code.\n\nOK Diagnostic code 12 is not output.\n\nHint Codes other than code 12 may be output at this time, but this is not relevant to this check.\n\nOK\n\nNG Replace steering wheel pad.\n\nFrom the results of the above inspection, the malfunctioning part can now be considered normal. To make sure of this, use the simulation method to check.\n\n7 Check spiral cable.\n\nCenter Airbag\nSensor Assembly\n\nSpiral\nCable\n\nSteering Wheel\nPad (Squib)\n\nON\n\nD⁺\n\nAIRB021\nAIRB138 AIRB257\n\nD (1) Turn ignition switch LOCK.\n(2) Disconnect connector between center airbag sensor assembly and spiral cable.\n(3) Turn ignition switch ON.\n\nC Measure voltage at D⁺ on spiral cable side of connector between spiral cable and steering wheel pad.\n\nOK Voltage: 0 V\n\nOK\n\nNG Repair or replace spiral cable.\n\nRepair or replace harness or connector between center airbag sensor assembly and spiral 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