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 may cause driveability problems.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
BAROMETRIC PRESSURE SENSOR OUTPUT VOLTAGE
| Vacuum In. Hg. |
Volts |
| 0 |
3.84 |
| 5 |
3.36 |
| 10 |
2.66 |
| 15 |
1.93 |
| 20 |
1.26 |
| 25 |
.58 |
ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| -4 (-20) |
14,600-17,800 |
| 68 (20) |
2200-2700 |
| 104 (40) |
1000-1300 |
| 140 (60) |
500-650 |
| 176 (80) |
290-350 |
IGNITION DIAGNOSTIC MONITOR VOLTAGE
| RPM |
Volts |
| 500 |
1.103 |
| 1000 |
1.257 |
| 1500 |
1.542 |
| 2000 |
1.768 |
| 2500 |
2.06 |
| 3000 |
2.15 |
| 3500 |
2.26 |
| 4000 |
2.50 |
| 4500 |
2.47 |
| 5000 |
2.40 |
THROTTLE POSITION SENSOR RESISTANCE
| Throttle Opening |
Ohms |
| 1/8 |
989 |
| 1/4 |
1104 |
| 3/8 |
1278 |
| 1/2 |
1462 |
| 5/8 |
1480 |
| 3/4 |
1459 |
| 7/8 |
1144 |
| Fully Open |
1072 |
VANE AIRFLOW METER VOLTAGE
| Door Opening |
Volts (Capri) |
Volts (Festiva) |
| Fully Closed |
|
.5-1.5 |
| 1/8 |
3.24 |
.59 |
| 1/4 |
5.60 |
1.19 |
| 3/8 |
5.62 |
1.78 |
| 1/2 |
5.83 |
2.38 |
| 5/8 |
6.02 |
2.97 |
| 3/4 |
6.57 |
3.56 |
| 7/8 |
7.46 |
4.16 |
| Fully Open |
7.87 |
4.5-5.0 |
VANE AIR TEMPERATURE RESISTANCE
| Temperature °F (°C) |
Ohms |
| -4 (-20) |
15,000 |
| 32 (0) |
5200 |
| 68 (20) |
2500 |
| 104 (40) |
1100 |
| 140 (60) |
600 |
| 176 (80) |
300 |