BR–137 BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC) DTC 25 26 TRAC Sub–Throttle Valve DTC No. | Diagnostic Trouble Code Detecting Condition | Trouble area 25 The difference between the sub–throttle sensor signal voltage and the voltage required by the step count is 1 V or more. Sub–throttle actuator. Throttle body (sub–throttle valve is stuck or operation is faulty). Sub–throttle position sensor. Open or short in sub–throttle position sensor cir–cuit. ECM TRAC ECU 26 Even 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. Sub–throttle actuator. Throttle body (sub–throttle valve is stuck or operation is faulty). Sub–throttle position sensor. Open or short in sub–throttle position sensor cir cuit. ECM TRAC ECU R06986 P Remove air duct. C Open and close the sub–throttle valve manually and check the condition during operation. OK The valve should operate smoothly without catching. HINT: If sub throttle actuator, sub–throttle valve, sub–throttle posi–tion sensor and harness are free from any defect, ECM may be defective. If ECM is free from any defect, TRAC ECU may be defec–tive.