- Turn ignition switch OFF.
- Disconnect engine coolant temperature sensor harness connector.
- Remove engine coolant temperature sensor.
- Check resistance between engine coolant temperature sensor terminals as follows.

<Reference data>
Terminals
|
Condition
|
Resistance (kΩ)
|
1 and 2
|
Temperature [°C (°F)]
|
20 (68)
|
2.1 - 2.5
|
50 (122)
|
0.68 - 1.00
|
90 (194)
|
0.236 - 0.260
|
Is the inspection result normal?
YES
>>INSPECTION END
NO
>>Replace engine coolant temperature sensor.