Replace the AC compressor on a 2012-2017 Toyota Camry 2.5L I4, including refrigerant recovery, compressor removal and installation, and system recharge.

Warnings

Tools required

Parts

• AC compressor assembly × 1 — Use OEM specification
• AC line O-rings × 4 — Use OEM specification
• Serpentine drive belt × 1 — Recommended replacement
• PAG 46 refrigerant oil × 1 — ND-OIL 11 or equivalent

Fluids

• R-134a refrigerant

Preparation

1. Verify EPA 609 certification and availability of AC recovery/recharge equipment before beginning
2. Park vehicle on level surface and engage parking brake
3. Allow engine to cool completely if recently operated
4. Disconnect negative battery terminal and wait 3 minutes
5. Raise front of vehicle and support securely on jack stands
6. Remove engine splash shield (multiple 10mm bolts)
7. Measure and record refrigerant oil removed during recovery for replacement calculation

Procedure

1. 1

   Recover refrigerant from AC system
   Connect AC recovery machine to low and high side service ports. Follow machine instructions to completely recover all refrigerant from the system. Record the amount of oil collected during recovery. The system must be completely evacuated before proceeding.
2. 2

   Remove serpentine drive belt
   Rotate the serpentine belt tensioner clockwise using a 14mm wrench or belt tool. Slide the belt off the compressor pulley first, then release tension and remove belt from remaining pulleys. Inspect belt for wear and replace if needed.
3. 3

   Disconnect compressor electrical connector
   Locate the compressor clutch electrical connector on the front of the compressor. Press the release tab and disconnect the connector. Move wiring harness aside to prevent damage.
4. 4

   Remove AC line fittings from compressor
   Using a 12mm flare nut wrench, disconnect both AC line fittings from the rear of the compressor. The suction line (larger) and discharge line (smaller) are secured with bolts through flanges. Immediately cap all open ports to prevent contamination and moisture entry. Discard old O-rings.
5. 5

   Remove compressor mounting bolts
   Locate the four compressor mounting bolts securing the compressor to the engine block. Remove the upper two 14mm bolts and lower two 14mm bolts. Support the compressor while removing the final bolt to prevent it from falling.
6. 6

   Remove compressor from vehicle
   Carefully maneuver the compressor out from the engine bay, routing it around the frame rail and other components. Tilt as needed to clear obstructions. Drain any remaining oil from the old compressor and measure the quantity.
7. 7

   Prepare new compressor
   Remove shipping plugs from new compressor ports. Drain and measure the shipping oil from the new compressor. Calculate proper oil charge: add oil removed during recovery plus oil drained from old compressor, subtract oil drained from new compressor. If total oil removed is less than 3 oz, add 3 oz. If between 3-5 oz, add that amount. Add the calculated amount of fresh PAG 46 oil to the new compressor through the suction port.
   ⚠Using incorrect oil quantity will cause compressor failure. Follow oil balancing procedure carefully.
8. 8

   Install new compressor
   Maneuver the new compressor into position on the engine block mounting bracket. Align all four mounting holes. Hand-thread all four mounting bolts before tightening any. Torque the four mounting bolts to specification in a cross pattern.
9. 9

   Install new O-rings and connect AC lines
   Lubricate new O-rings with clean PAG oil and install on both AC line fittings. Ensure O-rings are properly seated in their grooves. Connect the discharge line (smaller) and suction line (larger) to the compressor. Hand-thread bolts first, then torque both fittings to specification.
   ⚠Never reuse old O-rings. Ensure new O-rings are properly lubricated and seated to prevent leaks.
   Torque spec

   AC Line Fittings20 Nm (15 lb-ft)
10. 10

    Reconnect electrical connector
    Reconnect the compressor clutch electrical connector. Ensure it clicks securely into place and the connector lock engages fully.
11. 11

    Install serpentine belt
    Route the serpentine belt around all pulleys except the compressor pulley, following the belt routing diagram on the radiator support. Rotate the tensioner clockwise and slip the belt onto the compressor pulley. Release tensioner slowly and verify belt is properly seated on all pulleys.
12. 12

    Evacuate and recharge AC system
    Connect AC service machine to high and low side service ports. Evacuate the system for minimum 30 minutes to remove all air and moisture. Perform leak test if machine is equipped. Recharge system with R-134a refrigerant to specification (approximately 18-20 oz, verify on underhood label). Disconnect service machine.
    ℹ️Proper evacuation time is critical to remove moisture that will damage the new compressor.

Reassembly

1. Reinstall engine splash shield and torque all fasteners
2. Lower vehicle from jack stands
3. Reconnect negative battery terminal
4. Start engine and verify serpentine belt runs smoothly without noise

Verification

• Start engine and turn AC to maximum cold with fan on high
• Verify compressor clutch engages (audible click and clutch plate spins)
• Check that cold air blows from vents within 2-3 minutes
• Use digital thermometer to verify vent temperature drops below 45°F (7°C)
• Inspect all AC line connections for signs of oil or refrigerant leaks
• Verify no unusual noises from compressor during operation
• Run system for 10-15 minutes and recheck for leaks at all fittings
• Check that high and low side pressures are within specification using manifold gauges if available

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