how to fix Honda Accord 9th Generation (2013-2017) AC not blowing cold air?

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

557 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Honda Accord 2013-2017. 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 battery before working on electrical systems.
•Wear safety glasses when handling refrigerants and working under the hood.

Symptoms

•AC compressor does not engage
•Warm air blowing from the vents
•Unusual noises from the AC compressor
•AC system cycles on and off frequently
•Fogging of windows when AC is on
•Check engine light or AC warning light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related faults.
2
Inspect the AC compressor visually for any signs of damage or leaks.
3
Check the refrigerant level using a manifold gauge set to determine if it is low.
4
Test the AC relay and fuses to ensure they are functioning properly.
5
Observe the AC compressor clutch operation when the AC is activated.
6
Inspect the cabin air filter for clogs that may restrict airflow.

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
•Multimeter
•Socket set
•Safety glasses

Parts Required

•Refrigerant (R-134a)
•AC relay (if needed)
•AC compressor (if needed)
•Cabin air filter

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related faults.
2
Inspect the AC compressor visually for any signs of damage or leaks.
3
Check the refrigerant level using a manifold gauge set to determine if it is low.
4
Test the AC relay and fuses to ensure they are functioning properly.
5
Observe the AC compressor clutch operation when the AC is activated.
6
Inspect the cabin air filter for clogs that may restrict airflow.

Solution

1. Preparation

Gather tools: OBD-II scanner, manifold gauge set, multimeter, socket set, and safety glasses.
Disconnect the negative battery terminal to ensure safety during repairs.

2. Check and Recharge Refrigerant

Sub-steps:
1. Connect the manifold gauge set to the AC service ports.
2. Verify the pressure readings against the manufacturer's specifications.
3. If low, evacuate the system using a vacuum pump and recharge with the correct type and amount of refrigerant (typically R-134a).
4. Close the valves on the manifold gauge set and disconnect it.

3. Inspect and Replace AC Components

Sub-steps:
1. If the compressor is not engaging, check the AC relay with a multimeter; replace if faulty.
2. Inspect the AC compressor clutch for wear; if damaged, replace the compressor.
3. If no leaks are found, but the compressor is still not engaging, consider checking the AC pressure switch and replacing it if defective.

4. Clean or Replace Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter, typically behind the glove box.
2. Remove the filter cover and take out the old filter.
3. Clean the housing area and install a new cabin air filter ensuring proper airflow direction.

5. Final Assembly and Testing

Sub-steps:
1. Reconnect the negative battery terminal.
2. Start the vehicle and activate the AC system.
3. Monitor the system for proper operation and cold air output.