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HAC-108 < SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] INSUFFICIENT COOLING YES >> GO TO 9. NO >> Check water valve circuit. Refer to HAC-70, "Water Valve Diagnosis Procedure (VK56DE)" . 9. CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/ recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines. >> GO TO 10. 10. CHECK REFRIGERANT PURITY 1. Connect recovery/recycling equipment to vehicle. 2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier. YES >> GO TO 11. NO >> Check contaminated refrigerant. Refer to HAC-185, "Working with HFC-134a (R-134a)" . 11. CHECK FOR EVAPORATOR FREEZE UP Start engine and run A/C. Check for evaporator freeze up. YES >> Perform diagnostic work flow. Refer to HAC-174, "Diagnostic Work Flow" NO >> GO TO 12. 12. CHECK REFRIGERANT PRESSURE Check refrigerant pressure with manifold gauge connected. Refer to Is the inspection result normal? YES >> GO TO 13. NO >> Perform diagnostic work flow. Refer to HAC-174, "Diagnostic Work Flow" 13. CHECK AIR DUCTS Check ducts for air leaks. YES >> System OK. NO >> Repair air leaks. Diagnostic Work Flow INFOID:0000000005256968 2010 Pathfinder |