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B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR HAC-323 < DTC/CIRCUIT DIAGNOSIS > [AUTO A/C (WITHOUT HEAT PUMP)] C D E F G H J K L M A B HAC N O P B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR DTC Logic INFOID:0000000010122033 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. . • If mode door motors DTC (B27A6 – B27A9) are detected, there is probably a disconnected connector or an open circuit in mode door motor drive power supply harness. DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT 1. Turn power switch ON. 2. Select “Self Diagnostic Result” of “HVAC” using CONSULT. 3. Check DTC. YES >> Refer to HAC-323, "Diagnosis Procedure" NO >> Inspection End. Diagnosis Procedure INFOID:0000000010122034 Regarding Wiring Diagram information, refer to 1. CHECK MODE DOOR MOTOR POWER SUPPLY 1. Turn power switch OFF. 2. Disconnect mode door motor connector. 3. Turn power switch ON. 4. Check voltage between mode door motor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK A/C RELAY CIRCUIT DTC Items (CONSULT screen terms) DTC detection condition Possible cause B27A6 MODE DOOR MOTOR Short or open circuit of mode door motor drive • Mode door motor (The motor circuit is open or short- B27A7 Short or open circuit of mode door motor drive B27A8 Short or open circuit of mode door motor drive B27A9 Short or open circuit of mode door motor drive + − Voltage (Approx.) Mode door motor Connector Terminal M142 4 Ground Battery voltage |