{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"BAT","section_name":"Brakes, ABS & TRAC Systems","page":140,"pages_in_section":167,"title":"Inspection Procedure","section_header":"Brake System — Traction Control System (TRAC)","ocr_text":"BR–140\nBRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC)\n\nINSPECTION PROCEDURE\n\nHINT: If the same code is output from the ABS warning light, troubleshoot the ABS first.\n\n1 Check for open and short in harness and connector between terminals FRO,\nFLO, RRO, RLO of ABS & TRAC ECU and TRAC ECU (See page IN–30).\n\nOK\nNG Repair or replace harness or connector.\n\n2 Check speed sensor.\n\nFront\nFront\nP 1. Remove front fender splash shield.\n2. Disconnect speed sensor connector.\n\nC Measure resistance between terminals 1 and 2 of\nspeed sensor connector.\n\nOK Resistance: 0.7 – 1.7 k\n\nC Measure resistance between terminals 1 and 2 of\nspeed sensor connector and body ground.\n\nOK Resistance: 1 M or higher\n\nRear\nRear\nP 1. Remove rear seat cushion, seat back and quarter\ntrim panel.\n2. Disconnect speed sensor connector.\n\nC Measure resistance between terminals 1 and 2 of\nspeed sensor connector.\n\nOK Resistance: 0.7 – 1.7 k\n\nC Measure resistance between terminals 1 and 2 of\nspeed sensor connector and body ground.\n\nOK Resistance: 1 M or higher\n\nBR5425\nR07086\n\nOK\nNG Replace speed sensor.\n\nNOTICE: Check the speed sensor signal last (See page BR–62).\n\n3 Check for open and short in harness and connector between each speed\nsensor and ECU (See page IN–30).\n\nOK\nNG Repair and replace harness or 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