The mode selection button controls the direction of the air flow through the ventilation system.
The air flow outlet port is converted as follows:
Refer to the illustration in the
Scheduled maintenance service
Follow the Normal Maintenance Schedule if the vehicle is usually operated where
none of the following conditions apply. If any of the following conditions apply,
follow the Maintenance Under Sever ...
CVVT (Continuous Variable Valve Timing) System Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or
retards the valve timing of the intake and exhaust valve in accordance
with the ECM control signal which is calculated by ...