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B27C8, B27C9 COMPRESSOR SUCTION REFRIGERANT TEMPERATURE SEN- SOR HAC-151 < 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 B27C8, B27C9 COMPRESSOR SUCTION REFRIGERANT TEMPERATURE DTC Logic INFOID:0000000010121859 DTC DETECTION LOGIC NOTE: • If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to . • If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. . DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT 1. Turn power switch OFF. 2. Set the vehicle to READY. 3. Operate the automatic air conditioning system. 4. Set the temperature to full cold and wait at least 1 second. 5. Select “Self Diagnostic Result” of “HVAC” using CONSULT. 6. Check DTC. YES >> Refer to HAC-151, "Diagnosis Procedure" NO >> Inspection End. Diagnosis Procedure INFOID:0000000010121860 Regarding Wiring Diagram information, refer to 1. CHECK COMPRESSOR SUCTION REFRIGERANT TEMPERATURE SENSOR VOLTAGE SIGNAL 1. Turn power switch ON. 2. Operate the automatic air conditioning system. 3. Check voltage between heat pump control unit harness connector terminals. DTC Items (CONSULT screen terms) DTC detection condition Possible cause B27C8 COMP SUCTION TEMP The compressor suction refrigerant tempera- −66°C (−86.8°F)]. • Compressor suction refrigerant temperature sensor • A/C auto amp. (The sensor circuit is open or short- B27C9 The compressor suction refrigerant tempera- °C (281.1°F)]. Heat pump control unit Test condition Voltage signal connector + − Terminal M102 11 16 • Power switch ON erating JSIIA1780ZZ |