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:
See appropriate SELF-DIAGNOSTICS article or SYSTEM & COMPONENT TESTING article for additional sensor testing procedures.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
ENGINE COOLANT TEMPERATURE (ECT) & INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE
| Temperature -°F (°C) | Ohms |
|---|---|
| 212 (100) | 177 |
| 176 (80) | 332 |
| 140 (60) | 667 |
| 113 (45) | 1188 |
| 95 (35) | 1802 |
| 77 (25) | 2796 |
| 59 (15) | 4450 |
| 41 (5) | 7280 |
| 23 (-5) | 12300 |
| 5 (-15) | 21450 |
| -22 (-30) | 52700 |
| -40 (-40) | 100700 |
OXYGEN SENSOR VOLTAGE
| Condition | (1) Volts | ||
|---|---|---|---|
| Lean | 0.1 | ||
| Rich | 1.0 | ||
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