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DEFROSTER DOOR MOTOR CIRCUIT HAC-45 < COMPONENT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P 1. Turn ignition switch OFF. 2. Disconnect the A/C auto amp. harness connector. 3. Check continuity between A/C auto amp. harness connector M50 terminal 28 and ground. Is the inspection result normal? YES >> Replace A/C auto amp. Refer to NO >> Repair or replace harness as necessary. 8. CHECK PBR REFERENCE VOLTAGE AND GROUND CIRCUITS 1. Turn ignition switch OFF. 2. Disconnect the A/C auto amp. harness connector. 3. Check continuity between A/C auto amp. harness connector M50 (A) terminal 28 and M49 (B) terminal 3. Is the inspection result normal? YES >> GO TO 10. NO >> GO TO 9. 9. CHECK PBR REFERENCE VOLTAGE CIRCUIT FOR OPEN 1. Disconnect the defroster door motor harness connector. 2. Check continuity between defroster door motor harness connec- tor M144 (B) terminal 3, 2 and A/C auto amp. harness connector M50 (A) terminal 28, and M49 (C) terminal 3. Is the inspection result normal? YES >> Replace defroster door motor. Refer to . NO >> Repair or replace harness as necessary. 10. CHECK PBR FEEDBACK VOLTAGE 1. Reconnect the A/C auto amp. harness connector. 2. Turn ignition switch ON. 3. Check voltage between A/C auto amp. harness connector M49 terminal 10 and ground while cycling defroster switch on and off. Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 11. 11. CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT TO GROUND Continuity should not exist. AWIIA0119ZZ Continuity should exist. AWIIA0120ZZ 28 - 3 : Continuity should exist. 3 - 2 : Continuity should exist. AWIIA0121ZZ Voltage : Approx. 1V - 4.5V AWIIA0157ZZ |