Operation CHARM: Car repair manuals for everyone.

Engine Temperature Sensor: Testing and Inspection

- Disconnect right-hand four-pin plug from EZ control unit.

EZ Control Unit Right 4-Pin Plug:





- Connect ohmmeter to terminal 3 of plug and ground. Should be:
1.0 Kohms @ 20° C
1.1 Kohms @ 40° C
1.2 Kohms @ 60° C


- If values are incorrect, check directly at sensor.