Variable Induction Control Valve: Testing and Inspection
INSPECT IAC VALVE OPERATIONa. Connect the positive (+) lead from the battery to terminal +B and negative (-) lead to terminal ISCC, and check that the valve is closed.
b. Connect the positive (+) lead from the battery to terminal +B and negative (-) lead to terminal ISCO, and check that the valve is open.
If operation is not as specified, replace the IAC valve.