{"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":137,"pages_in_section":167,"title":"Dtc 25 26 TRAC Sub–Throttle Valve","section_header":"Brake System — Traction Control System (TRAC)","ocr_text":"BR–137\nBRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC)\n\nDTC 25 26 TRAC Sub–Throttle Valve\n\nDTC No. | Diagnostic Trouble Code Detecting Condition | Trouble area\n\n25\nThe difference between the sub–throttle sensor signal voltage and the voltage required by the step count is 1 V or more.\nSub–throttle actuator.\nThrottle body (sub–throttle valve is stuck or operation is faulty).\nSub–throttle position sensor.\nOpen or short in sub–throttle position sensor cir–cuit.\nECM\nTRAC ECU\n\n26\nEven when sub–throttle valve is driven to the fully open position, input voltage at terminal VTA2 of ECM does not come within range of the specifications 3–4.5 V.\nSub–throttle actuator.\nThrottle body (sub–throttle valve is stuck or operation is faulty).\nSub–throttle position sensor.\nOpen or short in sub–throttle position sensor cir cuit.\nECM\nTRAC ECU\n\nR06986\n\nP Remove air duct.\n\nC Open and close the sub–throttle valve manually and check the condition during operation.\n\nOK The valve should operate smoothly without catching.\n\nHINT: If sub throttle actuator, sub–throttle valve, sub–throttle posi–tion sensor and harness are free from any defect, ECM may be defective.\nIf ECM is free from any defect, TRAC ECU may be 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