Throttle Position (TP) Sensor: Notes

NOTE: Ensure TP sensor voltage is as specified. See TP SENSOR VOLTAGE table. TP sensor is not adjustable. For further testing procedures, see appropriate SELF-DIAGNOSTICS article.

NOTE: On Corvette, throttle control is electronic with no mechanical link from engine to accelerator pedal. The PCM and Throttle Actuator Control (TAC) module monitor the position of accelerator pedal based on signals from a nonadjustable Accelerator Pedal Position (APP) sensor. The APP is mounted above the accelerator pedal.

TP SENSOR VOLTAGE

Application

⁽¹⁾ Volts

1.9L

0.2-0.6 To 4.5-4.9

2.2L & 2.4L

0.35-4.65

3.0L

0.3-0.9 To 4.0-5.0

3.1L, 3.5L, 3.8L, 4.0L & 4.6L

⁽²⁾

5.7L

Camaro & Firebird

⁽²⁾

Corvette

Sensor No. 1

⁽³⁾

Sensor No. 2

⁽⁴⁾

⁽¹⁾	Voltage range is from idle position to wide open throttle position.

⁽²⁾	Voltage range is less than one volt at closed throttle to greater than 4 volts at wide open throttle.

⁽³⁾	Voltage range is less than one volt at closed throttle to 3.5 volts at wide open throttle.

⁽⁴⁾	Voltage range is 3.8 volts at closed throttle to less than one volt at wide open throttle.