my Honda Accord 9th Generation (2013-2017) AC is blowing warm air, how to fix it

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

507 words

Problem Statement

Complete guide to fixing AC that blows warm air in Honda Accord 9th Generation. Includes symptoms, diagnostic steps, tools required, and repair procedures.

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 and AC system to cool before opening any components.

Symptoms

•AC blows warm air
•Reduced airflow from vents
•AC compressor not engaging
•Unusual noises from the AC system
•Increased humidity inside the vehicle
•"Check AC" warning light illuminated

Diagnostic Steps

1
Check the AC system's refrigerant level using a pressure gauge.
2
Inspect the AC compressor for signs of damage or wear.
3
Verify if the AC compressor clutch is engaging when the AC is turned on.
4
Examine the AC fuse and relay for continuity and proper operation.
5
Inspect the cabin air filter for clogs or restrictions.
6
Scan the vehicle's computer for any fault codes related to the AC system.

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

•AC manifold gauge set
•Multimeter
•Screwdriver
•Pliers

Parts Required

•AC refrigerant
•AC compressor (if needed)
•Cabin air filter

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's refrigerant level using a pressure gauge.
2
Inspect the AC compressor for signs of damage or wear.
3
Verify if the AC compressor clutch is engaging when the AC is turned on.
4
Examine the AC fuse and relay for continuity and proper operation.
5
Inspect the cabin air filter for clogs or restrictions.
6
Scan the vehicle's computer for any fault codes related to the AC system.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Allow the vehicle to cool down before beginning work.

2. Check Refrigerant Level

Tools Required: AC manifold gauge set
Connect the low-pressure gauge to the low-side service port.
If the pressure is low, the system may be undercharged. Add refrigerant according to manufacturer specifications.

3. Inspect and Test AC Compressor

Tools Required: Multimeter
Locate the AC compressor and inspect for physical damage.
Test the compressor clutch with a multimeter to ensure it is receiving power. If not, check the AC relay and fuse.
If the compressor is not engaging, replace the compressor or the associated electrical components as necessary.

4. Replace Cabin Air Filter

Tools Required: Screwdriver (if required for access)
Open the glove compartment and locate the cabin air filter housing.
Remove the old filter and install a new one, ensuring it is oriented correctly.

5. Reassemble and Recharge System

After repairs, reconnect any components that were removed.
If refrigerant was added, ensure the system is sealed and functioning properly.
Reconnect the negative battery terminal.