DTC P0220: Throttle/Pedal Position Sensor/Switch "B" Circuit: General Description

The ETSCM (Electronic Throttle System Control Module) is integrated with PCM (Powertrain Control Module). Therefore, Make sure that location of ETS Module is changed. Differently from the conventional throttle control system whose throttle angle is controlled by the accelerator cable connected to throttle blade from accelerator pedal, Electronic Throttle System (ETS) is the throttle body whose throttle angle is controlled by control module. It consists of ETS-motor, Accelerator Position Sensor (APS), Throttle Position Sensor (TPS) and Limp home valve. Engine PCM takes APS signal as input signal instead of TPS signal and calculates the optimum throttle angle and outputs opening signal to ETS-motor. TPS monitors a real opening angle of throttle valve and this information is sent to PCM. TPS1 is main signal and used for controlling engine in calculating the target opening angle of throttle and for determining whether TPS2 is normally working. TPS2 is sub-signal which is used when TPS1 is malfunctioning and used for determining whether TPS1 is normally working.