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B279B, B279C MODE DOOR MOTOR (REAR) HAC-105 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING] C D E F G H J K L M A B HAC N O P B279B, B279C MODE DOOR MOTOR (REAR) DTC Logic INFOID:0000000009176843 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE With CONSULT 1. Turn ignition switch ON. 2. Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC. 3. Check if any DTC No. is displayed in the self-diagnosis results. YES >> Refer to HAC-105, "Diagnosis Procedure" NO >> Inspection End. Diagnosis Procedure INFOID:0000000009176844 Regarding Wiring Diagram information, refer to 1. CHECK MODE DOOR MOTOR (REAR) COMMUNICATION SIGNAL 1. Turn ignition switch ON. 2. Check output waveform between mode door motor (rear) harness connector and ground with the oscillo- scope. Is the inspection result normal? YES >> GO TO 2. NO >> GO TO 3. 2. CHECK INSTALLATION OF MODE DOOR MOTOR (REAR) Check mode door motor (rear) is properly installed. Refer to Is the inspection result normal? DTC Items (CONSULT screen terms) DTC detection condition Possible cause B279B REAR MODE DOOR MOT When the malfunctioning door position • Mode door motor (rear) (PBR internal circuit is open or short- • A/C auto amp. (LIN communication line is open or B279C When the malfunctioning door position + − Output waveform Mode door motor (rear) Connector Terminal M13 2 Ground SJIA1453J |