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

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

664 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Honda Accord 9th Generation (2013-2017). Step-by-step guide with diagnostic procedures 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.
•Recover refrigerant properly.

Symptoms

•AC system blowing warm or hot air
•Unusual noises from the AC compressor
•AC compressor not engaging
•Foggy windows due to humidity inside the vehicle
•Increased fuel consumption

Diagnostic Steps

1
Check the AC settings to ensure it is set to the coldest setting and on the maximum airflow.
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 wear.
4
Check the refrigerant level using a manifold gauge set.
5
Test the AC relay and fuse for proper operation.
6
Inspect the condenser and evaporator for blockages or damage.
7
Verify the operation of the AC clutch by observing if it engages when the AC is turned on.

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
•Socket set
•Torque wrench
•Fuse puller or pliers

Parts Required

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

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Diagnostic Steps

1
Check the AC settings to ensure it is set to the coldest setting and on the maximum airflow.
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 wear.
4
Check the refrigerant level using a manifold gauge set.
5
Test the AC relay and fuse for proper operation.
6
Inspect the condenser and evaporator for blockages or damage.
7
Verify the operation of the AC clutch by observing if it engages when the AC is turned on.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and turn off the engine.
Disconnect the battery to ensure safety during repairs.

2. Check and Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant.
Instructions:
1. Connect the manifold gauge set to the low and high-pressure ports of the AC system.
2. Read the pressure levels; if they are low, proceed to recharge the refrigerant.
3. Using the appropriate refrigerant, introduce it into the system until the recommended pressure is reached (typically around 30-40 psi on the low side).
4. Disconnect the manifold gauge set and reconnect the service ports.

3. Inspect and Replace AC Compressor (if necessary)

Tools Required: Socket set, torque wrench, AC compressor.
Instructions:
1. Remove the drive belt from the AC compressor by loosening the tensioner.
2. Disconnect the electrical connector from the compressor.
3. Remove the refrigerant lines connected to the compressor (ensure to recover refrigerant properly).
4. Remove the mounting bolts and take out the AC compressor.
5. Install the new compressor, torque the bolts to manufacturer specifications (typically around 15-20 ft-lbs), and reconnect refrigerant lines.
6. Reconnect the electrical connector and the drive belt.

4. Replace AC Relay or Fuse (if necessary)

Tools Required: Fuse puller or pliers.
Instructions:
1. Locate the fuse box, typically found under the dashboard or in the engine compartment.
2. Use a fuse puller to remove the AC relay and/or fuse.
3. Inspect for any signs of damage or burn.
4. Replace with a new relay or fuse of the same rating.

5. Clean or Replace Cabin Air Filter

Tools Required: None (manual removal).
Instructions:
1. Locate the cabin air filter, usually behind the glove compartment.
2. Remove the glove compartment for easier access.
3. Take out the old filter and clean any debris or replace it with a new filter.
4. Reinstall the glove compartment.