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POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER HAC-227 < DTC/CIRCUIT DIAGNOSIS > [MANUAL A/C (TYPE 2)] C D E F G H J K L M A B HAC N O P POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER Component Description INFOID:0000000006164837 COMPONENT DESCRIPTION Front Air Control The front air control has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The air mix door motor, mode door motor, intake door motor, defroster door motor, blower motor and A/C compressor are then controlled. The front air control is unitized with control mechanisms. When the various switches and temperature dials are operated, data is input to the front air control. Potentio Temperature Control (PTC) The PTC is built into the front air control. It can be set from cold to hot or any intermediate position by rotating the temperature control dial. Front Air Control Component Function Check INFOID:0000000006164838 SYMPTOM: A/C system does not come on. INSPECTION FLOW 1. CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK 1. Turn the blower control dial clockwise to low speed. 2. Press the A/C switch. 3. Confirm that the compressor clutch engages (sound or visual inspection). YES >> Inspection End. NO >> Go to diagnosis procedure. Refer to HAC-227, "Front Air Control Power and Ground Diagnosis . Front Air Control Power and Ground Diagnosis Procedure INFOID:0000000006164839 Regarding Wiring Diagram information, refer to HAC-232, "Wiring Diagram - Manual With 3 Control Dial Sys- DIAGNOSTIC PROCEDURE FOR A/C SYSTEM AWIIA0551ZZ AWIIA0478ZZ |