L200 L4-2.2L VIN F (2002)
Control Assembly: Description and Operation
HVAC Control - Automatic Climate Control
HVAC Control - Automatic Climate Control - General Description
The operation of the automatic A/C and heating system is controlled by the buttons, rotary switch, and knobs on the HVAC control head. The
compressor clutch, rear defog and recirc motor are controlled electrically by push buttons on the control head.
Blower speeds are controlled in all modes by a variable speed knob. The blower motor and compressor are not operational when the blower switch is in
the Off position.
The temperature knob controls the temperature door through an electric actuator, located on the left side of the HVAC module. The mode knob controls
the various mode positions using an actuator, located on the right side of the HVAC module.
The control head logic will automatically select outside air and A/C whenever defrost and heater/defrost is selected, regardless of the A/C and
recirculation button position.
IMPORTANT: Anytime HVAC control head is removed and disconnected, control head will not display correct temperature information for
approximately 5-10 minutes after reconnection.
