Sensor Range Charts
Sensor operating range information is supplies so that it can be determined if a sensor is out of calibration. A sensor that is out of calibration may not set a trouble code, however, it will cause driveability problems.
NOTE:
All voltage tests should be performed with a Digital Volt Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless specifically stated differently in testing procedures.
COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature | Ohms |
|---|---|
| -4°F (-20°C) | 15,000-16,000 |
| 32°F (0°C) | 5800-6000 |
| 68°F (20°C) | 2200-2400 |
| 104°F (40°C) | 1000-1200 |
| 140°F (60°C) | 500-600 |
| 176°F (80°C) | 340-360 |
| 212°F (100°C) | 180-190 |
AIR TEMPERATURE SENSOR RESISTANCE
| Temperature | Ohms |
|---|---|
| -4°F (-20°C) | 15,000 |
| 68°F (20°C) | 2500 |
| 212°F (100°C) | 160 |
OXYGEN SENSOR HEATER RESISTANCE
| Temperature | Ohms |
|---|---|
| Cold 68°F (20°C) | 3 |
| Hot 660°F (350°C) | 13 |