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24 - 24
CONTROLS
BLEND DOOR ACTUATOR
DESCRIPTION
The blend door actuator is a motor/geartrain
assembly which mechanically positions the blend
door. The actuator is mounted to the bottom of the
HVAC housing in the center.
OPERATION
A potentiometer in the actuator allows the BCM to
know the exact position of the blend door at all
times. The blend door actuator is not serviceable and
must be replaced if found to be defective.
REMOVAL
(1) Disconnect negative battery cable.
(2) Remove the passengerside hush panel.
(3) Disconnect the electrical connection.
(4) Remove actuator retaining screws and pull
actuator straight down (Fig. 24). Note actuator shaft
position for installation reference.
Fig. 24 BLEND DOOR ACTUATOR
INSTALLATION
(1) Install blend door actuator on the housing,
making sure the shaft spline is positioned properly
with the cam (Fig. 25).
(2) Install tighten the actuator mounting.
(3) Connect wire harness connector to the actuator.
(4) Install the passengerside hush panel.
(5) Connect the negative battery cable.
Fig. 25 BLEND ACTUATOR SPLINE
1 - ACTUATOR
2 - CAM SPLINE
3 - ACTUATOR SPLINE
MODE DOOR ACTUATOR
DESCRIPTION
The mode door actuator is a motor/geartrain
assembly. It mechanically positions the panel/bi-level
door and the heat/defrost door. The actuator is
mounted to the bottom of the HVAC housing on the
left side.
OPERATION
A potentiometer in the actuator allows the BCM
(for both manual and ATC systems) to know the
exact position of the doors at all times. The actuator
is not serviceable and must be replaced if found to be
defective.
JR
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