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HAC-114 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING] REAR AIR MIX DOOR MOTOR REAR AIR MIX DOOR MOTOR Diagnosis Procedure INFOID:0000000009652565 1. CHECK REAR AIR MIX DOOR MOTOR POWER SUPPLY 1. Turn ignition switch ON. 2. Check voltage between rear air mix door motor harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> GO TO 5. 2. CHECK REAR AIR MIX DOOR MOTOR GROUND CIRCUIT FOR OPEN 1. Turn ignition switch OFF. 2. Disconnect rear air mix door motor and A/C auto amp. connector. 3. Check continuity between rear air mix door motor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK REAR AIR MIX DOOR MOTOR LAN SIGNAL 1. Connect rear air mix door motor and A/C auto amp. connector. 2. Turn ignition switch ON. 3. Confirm output waveform between rear air mix door motor harness connector and ground using oscillo- Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 6. 4. CHECK INSTALLATION OF REAR AIR MIX DOOR MOTOR Check rear air mix door motor is properly installed. Refer to . Is the inspection result normal? YES >> Replace rear air mix door motor. Refer to HAC-153, "REAR AIR MIX DOOR MOTOR : Removal . + − Voltage Rear air mix door motor Connector Terminal B404 1 Ground 9.5 – 13.5 V Rear air mix door motor — Continuity Connector Terminal B404 2 Ground Existed + − Output waveform Rear air mix door motor Connector Terminal B404 3 Ground SJIA1453J |