Monitor Scan Tool Data

Ignition "ON" & Engine "OFF".
Disconnect ECTS connector.
Connect scan tool and monitor the "COOLANT TEMP. SNSR (V)" parameter on the scan tool data list.
Jumper the terminals 1 and 3 of the sensor harness connector together.
Specification: Approx. 0V

Fig 1: scan tool Data Display
Courtesy of KIA MOTORS AMERICA, INC.
Is ECTS parameter near the specified value?
YES
- Possibility of sensor malfunction. Go to "COMPONENT INSPECTION " procedure.
NO
- Go to next step.
Jumper the terminal 1 of the sensor harness connector to chassis ground.
Read the "COOLANT TEMP. SNSR (V)" parameter on the scan tool.
Is displayed ECT data near the specified value?
YES
- Possibility of open in ECTS ground circuit. Go to "GROUND CIRCUIT INSPECTION " procedure.
NO
- Possibility of open or short to battery in ECTS signal circuit. Go to "SIGNAL CIRCUIT INSPECTION " procedure.