Resistance Inspection
- Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS and/or ENGINE COOLANT REPLACEMENT .)
- Remove the ECT sensor.
- Place the ECT sensor in water with a thermometer, and heat the water gradually.
- Measure the resistance between the ECT sensor terminals using an ohmmeter.
- If not as specified, replace the ECT sensor.
- If the ECT sensor is okay, but PID value or PCM terminal 41 voltage are out of specification, perform the "CIRCUIT OPEN/SHORT INSPECTION ".
ECT RESISTANCE CHART
| ECT (°C {°F}) | Resistance (kilohm) |
|---|---|
| 20 {68} | 35-40 |
| 80 {176} | 3.6-4.1 |