{"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":80,"pages_in_section":167,"title":"Dtc 17 18 TRAC Motor Relay Circuit","section_header":"Brake System — Anti-Lock Brake System (ABS)","ocr_text":"BR–80\nBRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS)\n\nDTC 17 18 TRAC Motor Relay Circuit\n\nCIRCUIT DESCRIPTION\n\nThis relay circuit supplies power to the TRAC pump motor. While the TRAC is activated, the ECU switches the motor relay ON and operates the TRAC pump motor.\n\nDTC No. | Diagnostic Trouble Code Detecting Condition | Trouble area\n\n17\nConditions (1) and (2) continue for 0.2 sec. or more:\n(1) TRAC motor relay terminal (TMR) voltage: Battery positive voltage\n(2) Voltage of ABS & TRAC ECU terminal MTT: 0 V\nTRAC motor relay\nOpen or short in TRAC motor relay circuit\nECU\n\n18\nConditions (1) and (2) continue for 2 sec. or more:\n(1) TRAC motor relay terminal (TMR) voltage: 0 V\n(2) Voltage of ABS & TRAC ECU terminal MTT: Battery positive voltage\nTRAC motor relay\nB+ short in TRAC motor relay circuit\nECU\n\nFail safe function: If trouble occurs in this relay circuit, the ECU cuts off current to the TRAC solenoid relay and prohibits TRAC control.\n\nWIRING DIAGRAM\n\nY\nTRAC Motor Relay (R/B No.5)\n4 G-B\nV-Y\n3\nR/B No.2\nABS No.2\n2\n3\n2 W-G\nBattery\nW-B 1\nTRAC Pump Motor\n\nABS & TRAC ECU\n12 V\nG-B 14 TMR\n14\nIB6\nA20\nV-Y 13\n12 R-\n13\nIB6\nA20\n12 V\nW-G 4\n22 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}