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REAR AIR CONTROL SYSTEM HAC-61 < 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 49 and terminal 50. Is the inspection result normal? YES >> Replace A/C auto amp. Refer to NO >> GO TO 7. 7. CHECK AIR MIX DOOR MOTOR (REAR) CIRCUITS FOR SHORT TO GROUND Check continuity between A/C auto amp. harness connector M50 terminal 49, 50 and ground. Is the inspection result normal? YES >> GO TO 8. NO >> Repair or replace harness as necessary. 8. CHECK AIR MIX DOOR MOTOR (REAR) CIRCUITS FOR OPEN 1. Disconnect the air mix door motor (rear) harness connector. 2. Check continuity between A/C auto amp. harness connector M50 (A) terminal 49, 50 and the air mix door motor (rear) har- ness connector B155 (B) terminal 1, 6. Is the inspection result normal? YES >> Replace air mix door motor (rear). Refer to . NO >> Repair or replace harness as necessary. 9. CHECK A/C AUTO AMP. OWER AND GROUND FOR AIR MIX DOOR MOTOR (REAR) 1. Rotate temperature control dial (front) to maximum cold. 2. Check voltage between A/C auto amp. harness connector M50 terminal 49 and terminal 50 while rotating temperature control dial (rear) to maximum heat. Is the inspection result normal? YES >> GO TO 10. NO >> Replace A/C auto amp. Refer to VTL-7, "Removal and Installation" . 10. CHECK A/C AUTO AMP. FOR AIR MIX DOOR MOTOR (REAR) PBR POWER AND GROUND Continuity should exist. AWIIA0138ZZ 49 - Ground : Continuity should not exist. 50 - Ground : Continuity should not exist. AWIIA0136ZZ 49 - 1 : Continuity should exist. 50 - 6 : Continuity should exist. AWIIA0139ZZ Connector Terminals Condition Voltage (Approx.) (+) (-) A/C auto amp.: M50 50 49 Rotate temp control dial Battery AWIIA0137ZZ |