Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 341 (AIR CONDITIONING SYSTEM)AIR CONDITIONING SYSTEMEVACUATING

2004 Toyota Celica GT, Standard

Air Conditioning System: Evacuating

2004 Toyota Celica GT, StandardSECTION Evacuating

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

CONNECT QUICK DISCONNECT ADAPTER TO CHARGING HOSES
REMOVE CAPS FROM SERVICE VALVES ON REFRIGERANT LINES
SET ON MANIFOLD GAUGE SET
1. Close both hand valves of manifold gauge set.
2. Connect the quick disconnect adapters to the service valves.
  
  Fig 1: Installing Quick Disconnect Adapter & Charging Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
EVACUATE AIR FROM REFRIGERATION SYSTEM
1. Connect the vacuum pump adapter to the vacuum pump.
  
  Fig 2: Connecting Vacuum Pump Adapter To Vacuum Pump
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the center hose of the manifold gauge set to the vacuum pump adapter.
3. Open both the high and low hand valves and run the vacuum pump.
4. After 10 minutes or more, check that the low pressure gauge indicates 750 mm Hg (30 in. Hg) or more.
  HINT:
  
  If the reading is 750 mm Hg (30 in. Hg) or more, close both hand valves of manifold gauge set and stop the vacuum pump. Check the system for leaks and repair if necessary.
5. Close both the high and low hand valves and stop the vacuum pump.
6. Leave the system in this condition for 5 minutes or more and check that there is no gauge indicator.
  
  Fig 3: Connecting Manifold Gauge Set To High & Low Pressure Service Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.