1) Start the engine.
2) Read the data of engine coolant temperature sensor signal using Subaru Select Monitor.
NOTE:
For detailed operation procedure, refer to “READ CURRENT DATA FOR ENGINE”.
Is the engine coolant temperature 150°C (302°F) or higher?
Repair the poor contact.
In this case, repair the following item:
• Poor contact of engine coolant temperature sensor
• Poor contact in ECM
• Poor contact of coupling connector