Throttle Position Sensor

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Throttle Position (TP) sensor is not adjustable unless specified otherwise. For further testing procedures, refer to appropriate SELF-DIAGNOSTICS or SYSTEM & COMPONENT TESTING article.

NOTE: On some engines, throttle control is electronic with NO mechanical link from engine to accelerator pedal. The PCM monitors the position of accelerator pedal based on signals from a non-adjustable Accelerator Pedal Position (APP) module. The APP module may be mounted above or below the accelerator pedal.

THROTTLE POSITION (TP) SENSOR VOLTAGE

Application

⁽¹⁾ Voltage

2.0L

0.5-1.2 To 3.4-4.7

2.2L

Sonoma & S10 Pickup

1.0- 4.0

VUE

⁽²⁾

2.5L

0.4-1.2 To 3.4-4.7

3.0L

⁽³⁾

3.4L, 4.3L, 4.8L, 5.3L & 6.0L

1.0-4.0

4.2L

⁽⁴⁾

5.0L

1.2-4.5

5.7L

CNG Engine

0.5-4.0

Gasoline Engine

1.2-4.5

6.5L

⁽⁵⁾

6.6L

⁽⁶⁾

8.1L

Sensor 1

⁽⁷⁾

Sensor 2

⁽⁷⁾

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

⁽²⁾	TP sensor is 2 individual units within one housing. TP sensor 1 signal voltage ranges from 4.25 volts with throttle closed to 0.59 volt at wide open throttle. TP sensor 2 signal voltage ranges from 0.75 volt with throttle closed to 4.41 volts at wide open throttle.

⁽³⁾	TP sensor is 2 individual units within one housing. TP sensor 1 signal voltage ranges from 0.50 volt with throttle closed to 4.15-4.35 volts at wide open throttle. TP sensor 2 signal voltage ranges from 4.45 volts with throttle closed to 0.60-0.80 volt at wide open throttle.

⁽⁴⁾	TP sensor is 2 individual units within one housing. TP sensor 1 signal voltage is about 5 volts with throttle closed and decreases as throttle is opened. TP sensor 2 signal voltage increases as throttle is moved from a closed position to wide open throttle position.

⁽⁵⁾

6.5L diesel engine PCM uses 3 Accelerator Pedal Position (APP) sensors in a module rather than a Throttle Position (TP) sensor to control fuel delivery. PCM requires information from APP 1 sensor only, other sensors act as fail-safes. APP 1 sensor voltage ranges from about 0.35-0.95 volt with throttle closed to more than 4 volts at wide open throttle. APP 2 sensor voltage ranges from about 4.5 volts with throttle closed to about one volt at wide open throttle. APP 3 sensor voltage ranges from about 4 volts with throttle closed to about 2.5 volts at wide open throttle.

⁽⁶⁾

6.6L diesel engine PCM uses 3 Accelerator Pedal Position (APP) sensors in a module rather than a Throttle Position (TP) sensor to control fuel delivery. PCM requires information from APP 1 sensor only, other sensors act as fail-safes. APP 1 sensor voltage ranges from 0.52-0.80 volt with throttle closed to 2.12-2.65 volts at wide open throttle. APP 2 sensor voltage ranges from 4.25-4.53 volts with throttle closed to 2.40-2.93 volts at wide open throttle. APP 3 sensor voltage ranges from 3.95-4.13 volts with throttle closed to 2.76-3.16 volts at wide open throttle.

⁽⁷⁾	TP sensor is 2 individual units within one housing. TP sensor 1 signal voltage ranges from about one volt with throttle closed to more than 3.5 volts at wide open throttle. TP sensor 2 signal voltage ranges from about 4 volts with throttle closed to less than 1.5 volts at wide open throttle.