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B27B4 ELECTRIC COMPRESSOR HAC-119 < DTC/CIRCUIT DIAGNOSIS > [AUTO A/C (WITH HEAT PUMP)] C D E F G H J K L M A B HAC N O P B27B4 ELECTRIC COMPRESSOR DTC Logic INFOID:0000000010121829 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT 1. Turn power switch OFF. 2. Set the vehicle to READY. 3. Select “Self Diagnostic Result” of “HVAC” using CONSULT. 4. Check DTC. YES >> Refer to HAC-119, "Diagnosis Procedure" . NO >> Inspection End. Diagnosis Procedure INFOID:0000000010121830 Regarding Wiring Diagram information, refer to 1. CHECK ELECTRIC COMPRESSOR POWER SUPPLY CIRCUIT FOR OPEN 1. Turn power switch OFF 2. Disconnect electric compressor connector. 3. Remove A/C relay 4. Check continuity between electric compressor harness connector and A/C relay harness connector. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK ELECTRIC COMPRESSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between electric compressor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK ELECTRIC COMPRESSOR GROUND CIRCUIT FOR OPEN DTC Items (CONSULT screen terms) DTC detection condition Possible cause B27B4 COMP LO VOL SYS Voltage of battery power supply input to electric • Electric compressor (Electric compressor circuit is open Electric compressor A/C relay Continuity Connector Terminal Connector Terminal F20 7 E52 5 Yes Electric compressor — Continuity Connector Terminal F20 7 Ground No |