how to fix the rear AC not working in Honda Pilot YF3 (2016-2022)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative terminal of the battery to prevent electrical shock.

2. Inspect and Replace Fuses

• Locate the fuse box (usually found under the dashboard or in the engine compartment).
• Identify the rear AC fuse using the diagram on the fuse box cover.
• Remove the fuse using a fuse puller and check if it is blown. Replace with a new fuse of the same amperage if necessary.

3. Recharge Refrigerant

• Connect the manifold gauge set to the AC service ports (high and low).
• Start the engine and turn the AC to the maximum cool setting.
• Check the pressure readings; if low, add refrigerant until the correct level is reached (typically R-134a).
• Monitor the system for any leaks during this process.

4. Repair or Replace Blower Motor

• Remove the rear AC blower motor cover (typically located under the rear seat or in the trunk).
• Disconnect the electrical connector from the blower motor.
• Test the blower motor with a multimeter for proper voltage supply.
• If faulty, remove the motor by unscrewing the mounting screws, replace it with a new unit, and reconnect the wiring.

5. Inspect the Evaporator and Ducts

• If no issues are found with the blower motor, check the rear evaporator for blockages or dirt.
• Remove any debris or obstructions from the evaporator area.
• Clean the evaporator with an appropriate cleaning solution if needed, and ensure all ductwork is clear.