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Home >> Subaru >> 1992 >> Legacy Sedan 2WD F4-2.2L SOHC >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - HVAC >> Control Module HVAC >> Description and Operation
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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.

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