Legacy Postal Wagon AWD F4-2.2L SOHC (1998)
Control Module HVAC: Description and Operation
Fan Control Amplifier
The fan control amplifier is located on the cooling unit. It amplifies a 12-step base current flowing from the auto amplifier to change blower speed.
Hi Relay
The Hi relay is located on the heater unit. It receives a signal from the auto amplifier to operate the blower motor at high speed.
