Service Manual

HVAC
5-22 627333-A
ACTUATOR MOTOR (WATER VALVE)
FIG. 14: Water Valve with Actuator Motor
Water valve (1) controls amount of water flowing into
heater core. Foreign matter on outside surface of
heater core can cause a poor exchange of heat.
Heating system loses capability to heat when heater
core gets dirty. Clean outside surface of heater core
when system is checked.
Valve actuator is used to control water valve with
sixteen positions available and is dependent on amount
of heat required. Position of water valve changes as
selected temperature changes. A potentiometer
detects position of water valve and feeds information
back to control module.
FIG. 15: Water Valve Schematic
Inside actuator (A)
6-Pin Actuator (B)
FIG. 14
1
M12110315
FIG. 15
N011803003