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.
| Temperature | Ohms |
|---|---|
| 86°F (30°C) | 1500-2000 |
| 176°F (80°C) | 275-375 |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Terminals No. | Ohms |
|---|---|
| 1 & 2 | 0.0-19.9 |
HEATED OXYGEN SENSOR (HO2S) RESISTANCE
| Condition | Volts |
|---|---|
| Lean | Approx. 0.2 |
| Rich | Approx. 0.7 |
HEATED OXYGEN SENSOR (HO2S) VOLTAGE
| Terminals | Ohms | |
|---|---|---|
| Measure Between Sensor Terminals | ||
| 1.8L Turbo | Approx. 1600-2800 | |
| 2.8L | Approx. 1500-3500 | |
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE
| Terminal No. | Ohms |
|---|---|
| 1 & 2 | Infinity |
| 1 & 3 | Infinity |
| 2 & 3 | Infinity |
KNOCK SENSOR RESISTANCE (1.8L TURBO)