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AIR MIX DOOR MOTOR HAC-37 < COMPONENT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P 6. CHECK A/C AUTO AMP. FOR PBR POWER AND GROUND 1. Reconnect A/C auto amp. harness connector. 2. Turn ignition switch ON. 3. Check voltage between A/C auto amp. harness connector M50 (A) terminal 28 and M49 (B) terminal 3. Is the inspection result normal? YES >> GO TO 8. NO >> GO TO 7. 7. CHECK PBR REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND 1. Turn ignition switch OFF. 2. Disconnect the A/C auto amp. harness connector. 3. Check continuity between A/C auto amp. harness connector M49 terminal 29 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 air mix door motor (passenger) harness connec- tor. 2. Check continuity between air mix door motor (passenger) har- ness connector M143 (B) terminal 3, 2 and A/C auto amp. har- ness connector M49 (C) terminal 3 and M50 (A) terminal 28. Is the inspection result normal? YES >> Replace air mix door motor (passenger). Refer to 31, "Removal and Installation" . NO >> Repair or replace harness as necessary. 10. CHECK PBR FEEDBACK VOLTAGE Connector Terminals Voltage (Ap- prox.) (+) (-) A/C auto amp.: M49 28 3 5V AWIIA0099ZZ Continuity should not exist. AWIIA0241ZZ Continuity should exist. AWIIA0101ZZ 28 - 3 : Continuity should exist. 3 - 2 : Continuity should exist. AWIIA0121ZZ |