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HAC-74 < SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] INSUFFICIENT COOLING >> GO TO 9. 9. 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 10. NO >> Check contaminated refrigerant. Refer to HAC-86, "Working with HFC-134a (R-134a)" . 10. CHECK FOR EVAPORATOR FREEZE UP Start engine and run A/C. Check for evaporator freeze up. YES >> Perform performance test diagnoses. Refer to HAC-74, "Diagnostic Work Flow" . NO >> GO TO 11. 11. CHECK REFRIGERANT PRESSURE Check refrigerant pressure with manifold gauge connected. Refer to . Is the inspection result normal? YES >> Perform performance test diagnoses. Refer to HAC-74, "Diagnostic Work Flow" . NO >> GO TO 12. 12. CHECK AIR DUCTS Check ducts for air leaks. YES >> System OK. NO >> Repair air leaks. Diagnostic Work Flow INFOID:0000000009478310 |