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 ECTS harness connector together.
Specification: Approx. 0V
- Is ECTS parameter within the specification?
YES:
- Possibility of sensor malfunction. Go to "COMPONENT INSPECTION " procedure.
NO:
- Go to next step as below.
- Jumper the terminal 3 of the ECT sensor harness connector to chassis ground.
- Observe the "ECT SENSOR" parameter on the Scan Tool.
Specification: Approx. 0V
- Is ECT data within the specification?
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.