how to fix Honda Pilot YF3 (2016-2022) AC not blowing cold air?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery.
• Allow the engine to cool before starting work.

2. Check and Recharge Refrigerant

• Tools Required: AC manifold gauge set, refrigerant, recovery machine (if necessary)
• Connect the low-pressure side of the gauge set to the service port.
• Check the refrigerant level; if low, recover any existing refrigerant before recharging.
• Recharge the system with the correct type and amount of refrigerant as per the manufacturer's specifications (usually R-1234yf for 2016-2022 models).

3. Inspect and Replace AC Components

• Tools Required: Socket set, wrenches, screwdrivers
• If the compressor is not engaging, inspect the wiring and fuses. Replace any blown fuses.
• If the compressor is defective, remove the old compressor:
  • Disconnect the electrical connector and the refrigerant lines.
  • Unbolt the compressor from its mounting.
• Install the new compressor:
  • Position the new compressor and bolt it in place.
  • Reconnect the refrigerant lines and electrical connector.
• Replace any O-rings or seals to prevent leaks.

4. Replace Cabin Air Filter

• Tools Required: None (usually hand tools or no tools required)
• Locate the cabin air filter access panel (usually behind the glove box).
• Remove the old filter and replace it with a new one, ensuring proper orientation.

5. System Leak Test

• Connect the AC manifold gauge set and evacuate the system using a vacuum pump for at least 30 minutes.
• Check for leaks with a leak detection dye or bubbles in the area of connections.
• Recharge the system again if it holds vacuum.