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Home >> Lexus >> 2005 >> GS 300 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine (2JZ-GE) - Diagnostics >> Circuit Inspection >> DTC P2120, P2122, P2123: Throttle/Pedal Position Sensor/Switch "D" Circuit, Throttle/Pedal Position Sensor/Switch "D" Circuit Low/High Input >> Monitor Description

Monitor Description

When either voltage output VPA or VPA2 deviates from the standard ranges, or difference between the voltage outputs of the two sensors is less than threshold, the ECM concludes that there is a defect in the accelerator pedal position sensor. The ECM turns on the MIL and a DTC is set.

Example:

When the voltage output of the VPA is below 0.2 V or exceeds 4.7 V.