HEATER PERFORMANCE IMPROVEMENT – AC002-05 February 14, 2005 Page 3 of 15 Install Air Conditioner Unit Assembly. Air Conditioner Unit Assembly 1. Evacuate Refrigerant HFC-134a (R-134a). Equipment: Robinair R-134a Refrigerant Recovery/Recycling Machine (Robinair P/N: 342000) 2. Disconnect Negative Terminal of Battery. 3. Drain Coolant. CAUTION: Do not remove the radiator cap while the engine and radiator are still hot, as coolant and steam can be blown out under pressure. A. Remove the radiator cap. B. Loosen the radiator and engine drain plugs and drain the coolant. C. Close the drain plugs. Engine Drain Torque: 13 Nm (130 kgfcm, 9 ftlbf) HEATER PERFORMANCE IMPROVEMENT – AC002-05 February 14, 2005 Page 4 of 15 4. Disconnect Cooler Refrigerant Suction Hose No. 1. A. Install the SST to the piping clamp. SST: 09870-00015 HINT: Confirm the direction of the piping clamp claw and the SST using the illustration shown on the caution label. B. Push down the SST and release the clamp lock. NOTE: Be careful not to deform the tube when pushing the SST. C. Pull the SST slightly and push the release lever. Then remove the piping clamp with the SST. D. Remove the piping clamp from the SST. E. Disconnect the cooler refrigerant suction hose No. 1. NOTE: Disconnect the tube by hand only. Do not pry the tube apart. Cap the open fittings immediately to keep moisture or dirt out of the system. Disconnect the same way as cooler refrigerant suction hose No. 1. 6. Disconnect Heater Inlet Water Hose. Using pliers, grip the claws of the clip and slide the clip and disconnect the heater inlet water hose. 7. Disconnect Heater Outlet Water Hose. Using pliers, grip the claws of the clip and slide the clip and disconnect the heater outlet water hose. 8. Place Front Wheels Facing Straight Ahead. 9. Remove Horn Button Assembly. NOTE: If the airbag connector is disconnected with the ignition switch ON, DTCs will be recorded. Before working on SRS, please refer to the Technical Information System (TIS), 2005 model year Corolla Repair Manual: Supplemental Restraint System: Supplemental Restraint System: Precaution. A. Using a torx socket wrench, loosen the 2 torx screws until the groove along the screw circumference catches on the screw case.