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