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
- Is ECTS parameter near the specified value?
Yes:
- Possibility of sensor malfunction. Go to "COMPONENT INSPECTION " procedure.
No:
- Go to next step as below.
- 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.