Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

INSPECTION




1. DRAIN ENGINE COOLANT

2. REMOVE IGNITION COIL

3. REMOVE ECT SENSOR




4. INSPECT ECT SENSOR RESISTANCE

Using an ohmmeter, measure the resistance between terminals 1 (E2) and 2 (THW).

Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.

5. REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.

6. FILL RADIATOR WITH ENGINE COOLANT