Toyota Tundra Service Manual > Air Conditioning System(for Automatic Air Conditioning System): Actuator Check
ACTUATOR CHECK 1. ACTUATOR CHECK (a) Turn the ignition switch ON while pressing the A/C control AUTO switch and Recirculation / Fresh switch simultaneously. (b) Press the Recirculation / Fresh switch. (c) As each damper, motor and relay automatically operate the actuator check at 1 second intervals ...
