how to fix the AC not blowing cold air in my Honda Accord

Honda Accord 9th Generation (2013-2017)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

488 words

Problem Statement

Learn how to diagnose and fix the AC not blowing cold air in Honda Accord. 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 systems.
•Allow the engine to cool down before starting work.

Symptoms

•Warm air blowing from the AC vents
•AC compressor not engaging
•Unusual noises from the AC system
•Refrigerant leaks or oily residue around AC components
•Weak airflow from the vents

Diagnostic Steps

1
Check the AC system fuse for continuity using a multimeter.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually for signs of damage or leaks.
4
Measure the refrigerant pressure using a manifold gauge set.
5
Test the AC relay for proper operation by applying power directly to the coil.

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

•Multimeter
•OBD-II scanner
•Manifold gauge set
•Screwdrivers
•Pliers

Parts Required

•AC fuse (if blown)
•AC relay (if defective)
•Refrigerant (R-134a or as specified)
•AC compressor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the AC system fuse for continuity using a multimeter.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually for signs of damage or leaks.
4
Measure the refrigerant pressure using a manifold gauge set.
5
Test the AC relay for proper operation by applying power directly to the coil.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace AC Fuse

Locate the fuse box in the engine compartment.
Remove the AC fuse and inspect it for any damage.
If blown, replace the fuse with one of the same amperage.

3. Check and Replace AC Relay

Locate the AC relay in the fuse box.
Remove the relay and test it using a multimeter for continuity.
If defective, replace it with a new relay.

4. Recharge Refrigerant

Connect the manifold gauge set to the AC service ports.
Check the low and high-pressure readings to determine if refrigerant is low.
If low, connect a refrigerant canister to the low-pressure service port and slowly add refrigerant until the correct pressure is reached, following the manufacturer’s specifications.

5. Inspect and Replace AC Compressor (if needed)

If the compressor is not engaging, disconnect the electrical connector and check the voltage at the compressor while the AC is on.
If no voltage is present, trace back to the relay and switch.
If voltage is present and the compressor does not engage, replace the compressor.