|
|
HAC-68 < COMPONENT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] MAGNET CLUTCH 2. Check voltage between ECM harness connector F54 (VQ40DE) or F79 (VK56DE) terminal 70 and ground. Is the inspection result normal? YES >> GO TO 9. NO >> Refer to 9. CHECK BCM INPUT (FAN ON) SIGNAL Check FAN ON/OFF signal. Refer to HAC-21, "CONSULT-III Function (HVAC)" Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 10. 10. CHECK CIRCUIT CONTINUITY BETWEEN BCM AND A/C AUTO AMP. 1. Turn ignition switch OFF. 2. Disconnect BCM connector and A/C auto amp. connector. 3. Check continuity between BCM harness connector M18 (A) ter- minal 28 and A/C auto amp. harness connector M49 (B) terminal 5. Is the inspection result normal? YES >> GO TO 11. NO >> Repair harness or connector. 11. CHECK VOLTAGE FOR A/C AUTO AMP. (FAN ON SIGNAL) 1. Reconnect BCM connector and A/C auto amp. connector. 2. Turn ignition switch ON. 3. Check voltage between A/C auto amp. harness connector M49 terminal 5 and ground. Is the inspection result normal? YES >> GO TO 12. NO-1 >> If the voltage is approx. 5V when blower motor is ON, replace A/C auto amp. Refer to . Terminals Condition Voltage (+) (-) ECM connector Terminal No. F54 (VQ40DE) F79 (VK56DE) 70 Ground A/C switch: ON Approx. 0.36 - 3.88V LJIA0124E FRONT BLOWER CONTROL : FAN ON SIG ON FRONT BLOWER CONTROL : FAN ON SIG OFF 28 - 5 Continuity should exist. AWIIA0201ZZ Terminals Condition Voltage (+) (-) A/C auto amp. connector Terminal No. M49 5 Ground A/C switch: ON Approx. 0V A/C switch: OFF Approx. 5V AWIIA0202ZZ 2010 Pathfinder |