ENGINE CONTROLS - Sensor Operating Range Charts: Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it will cause driveability problems.
EGR TEMPERATURE (EGRT) SENSOR RESISTANCE
| Coolant Temperature °F (°C) |
M/ohms |
| 68-120 (20-49) |
2.25-2.55 |
| 130-148 (55-65) |
1.75-2.25 |
| 150-165 (66-74) |
1.40-1.75 |
| 168-190 (76-88) |
1.00-1.40 |
ENGINE COOLANT TEMPERATURE SENSOR
| Temperature °F (°C) |
Output Voltage |
Ohms |
| 14 (-10) |
4.4 |
9200 |
| 68 (20) |
3.5 |
2500 |
| 122 (50) |
2.2 |
800 |
| 194 (90) |
0.9 |
200 |
INTAKE AIR TEMPERATURE SENSOR
| Temperature °F (°C) |
Output Voltage |
Ohms |
| 14 (-10) |
4.4 |
9200 |
| 68 (20) |
3.5 |
2500 |
| 122 (50) |
2.2 |
800 |
| 194 (90) |
0.9 |
200 |
MASS AIRFLOW SENSOR
| Engine RPM |
Volts |
| 800 |
1.2-1.4 |
| 1500 |
1.5-1.7 |
| 2000 |
1.7-1.9 |
| 2500 |
1.9-2.1 |
| 3000 |
2.1-2.3 |
VEHICLE SPEED (VSS) SENSOR
| Vehicle Speed (MPH) |
Volts (AC) |
| 0 |
0 |
| 5 |
0.5 |
| 10 |
1.0 |
| 15 |
1.6 |
| 20 |
2.0 |
| 25 |
2.4 |
| 30 |
2.8 |
| 35 |
3.1 |
| 40 |
3.4 |
| 45 |
3.6 |
| 50 |
3.9 |
| 55 |
4.2 |
| 60 |
4.4 |
TRANSMISSION FLUID TEMPERATURE SENSOR RESISTANCE
| Coolant Temperature °F (°C) |
Ohms |
| 68 (20) |
2200 |
THROTTLE POSITION SENSOR
| Throttle Position |
Volts |
| Closed |
.4 |
| 1/4 |
1.3 |
| Half Open |
2.2 |
| 3/4 |
3.1 |
| Fully Open |
4.1 |