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Honda Civic 9th Generation (2012-2015) AC is not cooling, how to fix it? - Honda Civic
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Honda Civic 9th Generation (2012-2015) AC is not cooling, how to fix it?

Honda Civic 9th Generation (2012-2015)

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

Problem Statement

Learn how to diagnose and fix AC not cooling in Honda Civic 9th Generation (2012-2015). Step-by-step guide with symptoms, tools, 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 systems.
  • •Allow the engine to cool before working on the AC components to avoid burns.

Symptoms

  • •AC compressor not engaging
  • •Warm air blowing from vents
  • •Unusual noises from the AC compressor
  • •AC system blowing air intermittently
  • •Frost accumulation on AC lines
  • •Increased cabin humidity

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

  • •Manifold gauge set
  • •Multimeter
  • •Wrench set
  • •Fuse puller
  • •Vacuum pump
  • •Refrigerant recovery machine

Parts Required

  • •AC compressor (if necessary)
  • •AC fuse (if blown)
  • •Refrigerant (R-134a)

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 tools and parts.
  • Disconnect the battery to ensure safety while working on electrical components.
2. Check and Recharge Refrigerant
  • Tools Required: Manifold gauge set, refrigerant (R-134a).
  • Connect the manifold gauges to the low and high-pressure service ports.
  • Check the pressure readings against the manufacturer's specifications.
  • If the refrigerant is low, add the appropriate amount of refrigerant until it reaches the correct pressure.
3. Inspect and Replace AC Components

3.1 AC Fuse and Relay

  • Tools Required: Fuse puller, multimeter.
  • Locate the fuse box and check the AC fuse for continuity.
  • If blown, replace it with the same amperage fuse.
  • Test the relay by swapping it with a similar one or using a multimeter.

3.2 AC Compressor

  • Tools Required: Wrench set, refrigerant recovery machine (if replacing).
  • Inspect the AC compressor visually for leaks or damage.
  • If the compressor is faulty, recover the refrigerant from the system.
  • Remove the AC compressor by disconnecting electrical connectors and mounting bolts.
  • Install the new compressor and reconnect the necessary components.
4. System Cleaning and Assembly
  • Tools Required: Vacuum pump, refrigerant scale.
  • Use a vacuum pump to evacuate the AC system to remove moisture and air.
  • Once evacuated, recharge the system with the correct amount of refrigerant.
  • Reconnect the battery and start the vehicle.