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Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics - 4-Cylinder >> Diagnostic Tests >> DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem >> Circuit Description
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Circuit Description

For circuit description, see DTC P0120: THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION . Detecting condition of DTC is when after vehicle speed has exceeded 19 mph (30 km/h) even once, output value of throttle position sensor is out of applicable range (2 trip detection logic).

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