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 with a Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance.
| Temperature - °F (°C) | Ohms |
|---|
| 22 (-30) | 20,000-30,000 |
| 68 (20) | 8300-10,600 |
| 104 (40) | 2300-2700 |
| 140 (60) | 565-670 |
| 176 (80) | 295-365 |
| 194 (90) | 200-240 |
| 230 (110) | 140-160 |
| (1) Measure resistance between sensor terminals. |
| (1) | Measure resistance between sensor terminals. |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (1)
| Temperature - °F (°C) | Ohms |
|---|
| 4 (-20) | 15,000 |
| 32 (0) | 5800 |
| 68 (20) | 2600 |
| 86 (30) | 1700 |
| 176 (80) | 320 |
| (1) Measure resistance between sensor terminals. |
| (1) | Measure resistance between sensor terminals. |
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (1)
| Condition | Volts |
|---|
| Lean | 0-0.4 |
| Rich | 0.6-1.0 |
HEATED OXYGEN SENSOR (HO2S) VOLTAGE
| Position | Ohms |
|---|
| Idle Position (1) | 2300-3400 |
| Wide Open Throttle (1) | 700-1000 |
| (1) Measure resistance between terminals No. 1 and 3. |
| (1) | Measure resistance between terminals No. 1 and 3. |
THROTTLE POSITION (TP) SENSOR RESISTANCE
