1) Start the engine and let it idle.
2) Check the AVCS system operating angle using Subaru Select Monitor or general scan tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedures, refer to “READ CURRENT DATA FOR ENGINE”.
• General scan tool
For detailed operation procedure, refer to the general scan tool operation manual.
Is the AVCS system operating angle approximately 0°?
Check the following item and repair or replace if necessary.
• Oil pipe (clog)
• Oil flow control solenoid valve (clog or dirt of oil routing, setting of spring)
• Intake camshaft (dirt, damage of camshaft)