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

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

621 words

Problem Statement

Learn how to diagnose and fix the 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 the battery before working on electrical systems.
•Allow the engine to cool before working on the AC components.

Symptoms

•Weak or warm air blowing from the vents
•AC compressor not engaging
•Unusual noises from the AC compressor
•Check engine or AC warning light illuminated on the dashboard
•Ice buildup on the AC lines or evaporator
•Foul odors coming from the vents

Diagnostic Steps

1
Check the AC system fuse for continuity and replace if blown.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually to ensure that it is not damaged or leaking.
4
Measure the refrigerant pressure using a manifold gauge set to determine if the system is undercharged or overcharged.
5
Check the cabin air filter for clogs or debris that may restrict airflow.
6
Inspect the AC relay and wiring for any signs of damage or corrosion.

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
•Multimeter
•Screwdrivers
•Safety glasses
•Gloves

Parts Required

•Refrigerant (R-134a)
•AC compressor (if replacement is necessary)
•Cabin air filter (if dirty)

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Diagnostic Steps

1
Check the AC system fuse for continuity and replace if blown.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC compressor visually to ensure that it is not damaged or leaking.
4
Measure the refrigerant pressure using a manifold gauge set to determine if the system is undercharged or overcharged.
5
Check the cabin air filter for clogs or debris that may restrict airflow.
6
Inspect the AC relay and wiring for any signs of damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is off.
Disconnect the battery to avoid electrical shock.

Tools Required:

OBD-II scanner
Manifold gauge set
Socket set
Multimeter
Screwdrivers
Safety glasses and gloves

2. Recharge the AC System

Connect Manifold Gauges:
- Attach the blue (low pressure) and red (high pressure) hoses from the manifold gauge set to the respective ports on the AC system.
Check Refrigerant Level:
- Start the engine and turn the AC to the maximum setting. Observe the pressure readings.
Add Refrigerant:
- If the system is low, connect a refrigerant canister to the blue hose and add refrigerant according to manufacturer's specifications (usually R-134a).
- Monitor pressure and do not exceed recommended levels.

3. Replace AC Compressor

Remove Serpentine Belt:
- Use a socket wrench to release tension on the serpentine belt tensioner and slide the belt off the AC compressor pulley.
Disconnect Electrical Connectors:
- Unplug the electrical connectors from the AC compressor.
Remove Bolts:
- Remove the mounting bolts securing the compressor to the engine block and carefully take out the compressor.
Install New Compressor:
- Position the new compressor and secure it with bolts to the engine block. Ensure proper torque specifications are followed.
Reconnect Electrical Connectors:
- Plug the electrical connectors back into the new compressor.
Reinstall Serpentine Belt:
- Route the serpentine belt over the new compressor pulley and release tension on the tensioner to position the belt correctly.