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how to fix the AC not blowing cold air in my Honda Pilot Third Generation (2016-present) - Honda Pilot
Home/Cars/Honda/Pilot/Third Generation (2016-present)/how to fix the AC not blowing cold air in my Honda Pilot Third Generation (2016-present)

how to fix the AC not blowing cold air in my Honda Pilot Third Generation (2016-present)

Honda Pilot Third Generation (2016-present)

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

Problem Statement

Learn how to diagnose and fix the AC not blowing cold air in your Honda Pilot (2016-2023). Step-by-step guide with symptoms, diagnostic steps, 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 AC system.

Symptoms

  • •No cold air from the vents
  • •AC compressor not engaging
  • •Unusual noises from the AC system
  • •Warm air blowing intermittently
  • •AC light blinking on the dashboard
  • •Increased humidity inside the vehicle

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
  • •Multimeter
  • •Refrigerant gauge set
  • •Socket set
  • •Safety gloves

Parts Required

  • •Refrigerant (R-1234yf or R-134a)
  • •AC compressor (if faulty)
  • •Cabin air filter

Additional Information

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

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Solution
1. Preparation
  • Gather tools: OBD-II scanner, multimeter, refrigerant gauge set, socket set, and safety gloves.
  • Ensure the vehicle is parked on a level surface and the engine is off.
2. Check and Recharge Refrigerant
  1. Connect the refrigerant gauge set to the AC service ports (low and high side).
  2. Check the pressure readings against manufacturer specifications.
    • If the refrigerant level is low, proceed to the next step.
  3. Recover any remaining refrigerant using a recovery machine if applicable.
  4. Recharge the AC system with the correct type and amount of refrigerant (typically R-1234yf or R-134a).
    • Use manufacturer specifications for the amount (usually around 24 oz for the Pilot).
  5. Monitor the system while charging to ensure pressure stabilizes within normal limits.
3. Inspect and Replace the AC Compressor
  1. If the compressor is not engaging, disconnect the electrical connector from the compressor.
  2. Use a multimeter to check for voltage at the connector when the AC is turned on.
    • If no voltage is present, trace back to the fuse/relay and check for issues.
  3. If voltage is present but the compressor does not engage, replace the AC compressor.
    • Remove the serpentine belt using a socket wrench.
    • Unbolt the compressor from its mounting bracket and detach the refrigerant lines (use caution as refrigerant may still be present).
    • Install the new compressor and connect the refrigerant lines securely.
    • Reinstall the serpentine belt and ensure proper tension.
4. Replace the Cabin Air Filter
  1. Locate the cabin air filter housing, usually behind the glove box.
  2. Remove the glove box to access the filter compartment.
  3. Take out the old filter and inspect for dirt or blockages.
  4. Install a new cabin air filter, ensuring it is oriented correctly as per the airflow direction marked.