Monitor SCANTOOL Data
- Ignition "ON" & Engine "OFF".
- Disconnect ECTS connector.
- Connect Scantool and monitor the "COOLANT TEMP. SNSR(V)" parameter on the Scantool 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 Scantool.
- 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.