how to fix the AC not blowing cold air in my Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety during the repair.
• Ensure the vehicle is parked on a level surface with the engine off.

2. Check Refrigerant Level

• Sub-steps:
  1. Connect the manifold gauge set to the low and high-pressure service ports.
  2. Start the engine and turn on the AC to the maximum setting.
  3. Observe the pressure readings. Low pressure indicates low refrigerant.
• Tools Required: Manifold gauge set.

3. Recharge Refrigerant (if low)

• Sub-steps:
  1. If low, attach a refrigerant canister to the low-pressure port.
  2. Open the valve on the canister to allow refrigerant to flow into the system.
  3. Monitor the pressure and stop once it reaches the manufacturer’s recommended level (usually between 30-40 psi on the low side).
• Parts Required: Refrigerant (R-134a or R-1234yf depending on the system).

4. Inspect and Replace Components

• Sub-steps:
  1. If the AC compressor does not engage, test the AC relay and fuses; replace any that are blown.
  2. Check the AC compressor clutch for proper operation. If defective, replace the compressor.
  3. Inspect the condenser for dirt or debris; clean or replace as necessary.
  4. Remove and replace the cabin air filter if clogged.
• Tools Required: Socket set, multimeter.

5. System Check

• Sub-steps:
  1. After repairs, reconnect the battery terminal.
  2. Start the vehicle and turn on the AC to check if cold air is now blowing.
  3. Monitor for any unusual noises or warning lights during operation.
• Safety Warnings: Ensure the engine is off before working on electrical components.