How do you recharge the air conditioner on a 2001 Infiniti G20?

To recharge the air conditioner on a 2001 Infiniti G20, start by locating the low-pressure service port, typically found on the larger AC line. Connect a refrigerant gauge and canister to this port, ensuring the engine is running and the AC is set to maximum. Slowly add refrigerant until the correct pressure is reached, as indicated on the gauge. Be cautious not to overcharge, and check for any leaks or issues in the system afterward.