Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
DEFINITION: The low and the high side pressures are both higher than normal.
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1 | Were you sent here from the A/C System Performance Test? | Go to Step 2 | |||||||
2 |
Is the cooling fan ON and operating properly? | Go to Step 3 | Go to Step 5 | ||||||
3 | Visually inspect for the following conditions:
Do any of these conditions exist? | Go to Step 4 | Go to Step 6 | ||||||
4 | Repair the air flow restriction. Is the repair complete? | Go to Step 9 | -- | ||||||
5 | Repair the fault to the cooling fan operation. Refer to Cooling Fan Inoperative in Engine Cooling. Is the repair complete? | Go to Step 9 | -- | ||||||
6 |
Caution: Refer to Moving Parts and Hot Surfaces Caution in the Preface section. Feel the liquid line on both sides of the expansion device. Are the temperatures on both sides of the expansion device similar? | Go to Step 7 | Go to Step 8 | ||||||
7 | Replace the damaged or faulty thermal expansion valve. Refer to Thermal Expansion Valve Replacement . Is the repair complete? | Go to Step 9 | -- | ||||||
8 | Air is in the refrigerant system, or the system is overcharged. Refer to the view screen on J 43600 ACR 2000 Air Conditioning Service Center for foreign gas content in the refrigerant. Recover and recharge the A/C system. Refer to Refrigerant Recovery and Recharging . Is the repair complete? | Go to Step 9 | -- | ||||||
9 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Symptoms - HVAC Systems - Automatic in HVAC Systems - Automatic | ||||||
