Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description of Electric Throttle Control System Calibration
ECM calculates the throttle valve position on the basis of the completely closed throttle valve position data.
The completely closed throttle valve position (signal voltage from TP sensor) of each system differs due to the individual differences of the throttle valve, the TP sensor and the APP sensor. As such differences must be taken into account for controlling the throttle valve, it is necessary to calibrate the completely closed throttle valve position data in ECM.
After performing any one of the following service, it is necessary to calibrate the completely closed throttle valve position stored in ECM. See ELECTRIC THROTTLE CONTROL SYSTEM CALIBRATION .
- Shutoff of backup power for ECM (i.e. disconnection of battery cable, replacement of battery, blown or removed "DOME" fuse)
- Replacement of ECM
- Clearance of DTC related to electric throttle control system (DTC related to electric throttle control system: P0607, P0122, P0123, P0222, P0223, P2101, P2102, P2103, P2111, P2119, P2122, P2123, P2127, P2128, P2135 or P2138)
- Replacement of throttle body assembly or accelerator pedal assembly with APP sensor
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.