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how to troubleshoot Honda Civic 9th Generation (2012-2015) AC not blowing cold air - Honda Civic
Home/Cars/Honda/Civic/9th Generation (2012-2015)/how to troubleshoot Honda Civic 9th Generation (2012-2015) AC not blowing cold air

how to troubleshoot Honda Civic 9th Generation (2012-2015) AC not blowing cold air

Honda Civic 9th Generation (2012-2015)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
598 words

Problem Statement

Learn how to troubleshoot and fix the AC not blowing cold air in Honda Civic 9th Generation (2012-2015). Step-by-step guide with diagnostic and repair instructions.

Affected Component
HVAC
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical components.
  • •Allow the engine to cool before working on the A/C system to prevent burns.

Symptoms

  • •A/C compressor not engaging
  • •Warm air blowing from vents
  • •A/C light blinking or not illuminated
  • •Unusual noises from A/C compressor
  • •Foul odor from vents when A/C is turned on

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Manifold gauge set
  • •Socket set
  • •Wrenches
  • •A/C recovery machine
  • •Torque wrench

Parts Required

  • •Refrigerant (R-134a)
  • •A/C compressor
  • •O-rings for A/C lines

Additional Information

Affected Component
HVAC
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
3 items

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Solution
1. Preparation
  • Gather necessary tools and parts.
  • Park the vehicle on a flat surface and set the parking brake.
  • Disconnect the battery to prevent electrical shock during the repair.
2. Recover and Recharge Refrigerant

  1. Connect Manifold Gauges:

    • Attach the high and low side gauges to the A/C service ports on the vehicle.
    • Ensure the vehicle is off during this connection.

  2. Recover Refrigerant:

    • Start the A/C recovery machine and follow the manufacturer's instructions to recover refrigerant safely.
    • Ensure to capture refrigerant in an appropriate container.

  3. Recharge System:

    • After recovering, recharge the A/C system with the appropriate type and amount of refrigerant (usually R-134a).
    • Follow manufacturer specifications for refrigerant quantity.
3. Replace A/C Compressor (if necessary)

  1. Remove Serpentine Belt:

    • Use a socket set to release tension on the serpentine belt and remove it from the A/C compressor.

  2. Disconnect Electrical Connector:

    • Unplug the electrical connector from the A/C compressor.

  3. Remove A/C Lines:

    • Use the appropriate wrench to disconnect the high and low-pressure A/C lines from the compressor.
    • Be prepared for refrigerant to escape.

  4. Remove A/C Compressor:

    • Unbolt the compressor from its mounting bracket using a socket set.
    • Carefully remove the compressor from the engine bay.

  5. Install New A/C Compressor:

    • Position the new compressor in place and secure it with bolts to the mounting bracket.
    • Reconnect the A/C lines and electrical connector.
4. Testing the System

  1. Reconnect Battery:

    • Reconnect the vehicle's battery.

  2. Start Engine:

    • Turn on the vehicle and set the A/C to maximum.

  3. Monitor A/C Operation:

    • Check if the compressor engages and verify that cold air is blowing from the vents.
    • Inspect for any refrigerant leaks around the connections.