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.
Specification: Approx. 5V

Fig 1: Scan Tool Display - ECT VOLTAGE
Courtesy of HYUNDAI MOTOR CO.
Is ECTS parameter within the specification?
YES:
- Possibility of sensor malfunction. Go to "COMPONENT INSPECTION " procedure.
NO:
- Possibility of signal circuit short to ground. Go to "SIGNAL CIRCUIT INSPECTION " procedure.