Operation CHARM: Car repair manuals for everyone.

Component Tests and General Diagnostics

Engine Coolant Temperature (ECT) Sensor Inspection




Warm up sender gauge (2). Thus make sure its resistance is decreased with increase of its temperature.

ECT sender gauge specifications
136 - 216 Ohms at 50 degrees C (122 degrees F)
16.4 - 19.4 Ohms at 120 degrees C (248 degrees F)