940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Air Door Actuator / Motor: Description and Operation
Air Mix Control Motor:
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An electric motor (servomotor) is used to operate the air mixing shutter.
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A potentiometer mounted adjacent to the motor detects the shutter position.
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A worm gear is used to reduce the motor speed and stroke.
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Although the climate unit is installed in mirror-image configuration in LHD and RHD cars, the same servomotor is used. Different holes are
provided for attaching the shutter arm.