Throttle Position Sensor (TPS) Check/Adjust

The Throttle Position Sensor is not adjustable. This ECM auto-zeros the TPS voltage at idle. This means the ECM reads the TPS voltage at idle as indicating 0% throttle opening (as long as the voltage is within the specified range). If the sensor is not within the specified range, circuit troubleshooting is necessary.

TPS BASE VOLTAGE SPECIFICATIONS ⁽¹⁾

Application

Voltage

Throttle Position

Normal Range

.35-1.33

Curb Idle

⁽¹⁾	ECM auto-zeros the TPS voltage at idle. This means the ECM reads the TPS voltage at idle as indicating 0% throttle opening (as long as the voltage is within the specified range).