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Charging Procedure

WARNING: This page is about a different variant/trim than selected.
WARNING:

Review the safety precautions and warnings in this service information before performing this procedure. Failure to follow these instructions may result in serious injury or death.

CAUTION:

A small amount of refrigerant oil is removed from the A/C system each time the refrigerant system is recovered and evacuated. Before charging the A/C system, you MUST replenish any oil lost during the recovery process. See the equipment manufacturer instructions for more information.

NOTE:

Polyalkylene Glycol (PAG) oil can contaminate the refrigerant of a Electric Vehicle and lead to A/C system damage and failure. If the refrigerant recovery/recycling and charging equipment was last used on a non-electric model, flush the hoses of the equipment with a solvent approved by the equipment manufacturer before using the equipment on an Electric model, or use refrigerant recovery/recycling and charging equipment designated only for Electric models by your service facility. See the operating instructions supplied by the equipment manufacturer for proper use and care of the refrigerant recovery/recycling and charging equipment.

  1. Recover and evacuate the refrigerant system. Refer to STANDARD PROCEDURE  .
  2. Connect an R-134a refrigerant recovery/recycling/charging station that meets SAE standard J2788 to the refrigerant system.
  3. When required, adjust the refrigerant oil level. Refer to STANDARD PROCEDURE  .
    NOTE:

    A/C system refrigerant capacity can be found on the HVAC Specification Label, located in the engine compartment.

  4. Measure the proper amount of refrigerant and heat it to 52° C (125° F) with the charging station. Refer to SPECIFICATIONS  . See the operating instructions supplied by the equipment manufacturer for proper use of this equipment.
  5. Open both the low and high side valves, then open the charge valve to allow the heated refrigerant to flow into the refrigerant system.
  6. When the transfer of refrigerant has stopped, close the valves.
    WARNING:

    Take care not to open the high side (high pressure) valve while performing Step 7. Failure to follow these instructions may result in possible serious or fatal injury.

  7. Perform the following if all of the refrigerant charge did not transfer from the dispensing device.
    • Open all of the windows in the vehicle.
    • Set the heating and A/C system so that the A/C compressor is operating and the blower motor is operating at its lowest speed setting.
    • Engage the Electric A/C Compressor.
    • If the A/C compressor does not operate, test the compressor control circuits and repair as required.
    • Open the low side valve and the charge valve to allow the remaining refrigerant to flow into the refrigerant system.
    • When the transfer of refrigerant has stopped, close the valves.
  8. Disconnect the refrigerant recovery/recycling/charging station from the refrigerant system service ports.
  9. Install the caps onto the refrigerant system service ports.
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