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 otherwise stated in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
For testing, turn ignition switch to OFF position. Disconnect sensor electrical connector. Connect an ohmmeter lead to one of the sensor connector terminals. Connect other ohmmeter lead to remaining sensor connector terminal. See appropriate sensor resistance table. If readings from sensor are not within specification, replace sensor.
NOTE:
Sensor information not covered in this article can be found in appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
CHARGE TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 200 (93) | 700-1000 |
| 70 (21) | 7000-13,000 |
COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 200 (93) | 700-1000 |
| 70 (21) | 7000-13,000 |
THROTTLE BODY TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 200 (93) | 400-1500 |
| 70 (21) | 5600-14,600 |