my Honda Pilot YF3 (2016-2022) AC blows warm air what's wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative battery terminal to ensure safety.

2. Check and Recharge Refrigerant

• Tools Required: Manifold gauge set, refrigerant, safety goggles, gloves.
• Sub-steps:
  1. Connect the manifold gauge set to the AC service ports on the Honda Pilot.
  2. Read the pressure levels on both the low and high sides.
  3. If levels are low, carefully add refrigerant according to the manufacturer's specifications, ensuring not to overfill.
  4. Monitor the system while adding refrigerant and check for any leaks.

3. Inspect and Replace AC Compressor

• Tools Required: Socket set, torque wrench, AC compressor replacement part, vacuum pump.
• Sub-steps:
  1. Remove the serpentine belt from the AC compressor by releasing the tension on the tensioner pulley.
  2. Disconnect the AC lines from the compressor using appropriate wrenches, ensuring to capture any refrigerant in a recovery machine.
  3. Unbolt the compressor from its mounting bracket and remove it from the engine bay.
  4. Install the new compressor by reversing the removal steps and ensuring proper torque specifications are followed.

4. Test AC System

• Tools Required: Digital thermometer.
• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Start the engine and turn on the AC to maximum cold setting.
  3. Use a digital thermometer to measure the air temperature at the vents to verify cooling efficiency.