ECT Sensor Resistance Inspection
- Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS [L3, AJ] ).
- Remove the ECT sensor (located above the starter).
- Place the ECT sensor in water with a thermometer, and heat the water gradually.
- Measure the resistance between the ECT sensor terminals A and B using an ohmmeter.
- If not as specified, replace the ECT sensor.
- If the ECT sensor is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection".
Specification
WATER TEMPERATURE RESISTANCE CHART
| Water temperature (°C {°F}) | Resistance (kilohm) |
|---|---|
| 20 {68} | 35.48-39.20 |
| 70 {158} | 5.07-5.60 |
| 80 {176} | 3.65-4.02 |