how to fix the air conditioning not blowing cold air in my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

624 words

Problem Statement

Learn how to diagnose and fix the A/C not blowing cold air in a 2013-2019 Toyota Corolla E170. Step-by-step guide with tools and tips.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Ensure proper recovery of refrigerant before removing A/C components.

Symptoms

•A/C system blows warm air instead of cold
•A/C compressor does not engage
•Unusual noises from the A/C compressor area
•A/C system cycles on and off frequently
•Foul smell when A/C is activated

Diagnostic Steps

1
Check the A/C control settings to ensure the system is set to the coldest temperature and maximum fan speed.
2
Inspect the A/C compressor for any visible signs of damage or leakage.
3
Use an OBD-II scanner to check for any error codes related to the A/C system.
4
Measure the refrigerant pressure using a manifold gauge set to ensure it is within the manufacturer's specifications.
5
Inspect the A/C condenser for blockages, dirt, or debris that may impede airflow.
6
Check the cabin air filter for clogs that could restrict airflow through the A/C 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

•OBD-II scanner
•Manifold gauge set
•Socket set
•Torque wrench
•A/C compressor removal tool
•Soft brush

Parts Required

•R-134a refrigerant
•A/C compressor (if replacement is needed)
•Cabin air filter (if replacement is needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the A/C control settings to ensure the system is set to the coldest temperature and maximum fan speed.
2
Inspect the A/C compressor for any visible signs of damage or leakage.
3
Use an OBD-II scanner to check for any error codes related to the A/C system.
4
Measure the refrigerant pressure using a manifold gauge set to ensure it is within the manufacturer's specifications.
5
Inspect the A/C condenser for blockages, dirt, or debris that may impede airflow.
6
Check the cabin air filter for clogs that could restrict airflow through the A/C system.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent any electrical issues while working on the vehicle.
Wear safety goggles and gloves for protection.

2. Inspect and Refill Refrigerant

Tools Required: Manifold gauge set, refrigerant (R-134a), safety goggles, gloves.
Attach the manifold gauge set to the low and high-pressure service ports.
Check the pressure readings against the manufacturer's specifications.
If low, add refrigerant slowly while monitoring the gauge until proper levels are achieved. Avoid overfilling.

3. Check and Replace A/C Compressor

Tools Required: Socket set, torque wrench, A/C compressor removal tool.
Disconnect the electrical connector from the A/C compressor.
Remove the serpentine belt from the compressor by releasing the tension on the belt tensioner.
Unbolt the compressor from its mounting bracket and remove any associated hoses (ensure all refrigerant is recovered by a certified technician).
Install the new compressor by reversing the removal process. Ensure all bolts are torqued to the manufacturer’s specifications and that all O-rings are replaced.

4. Inspect and Clean A/C Condenser

Tools Required: Soft brush, water hose.
Locate the A/C condenser in front of the radiator.
Use a soft brush to remove any debris from the condenser fins.
If heavily clogged, wash gently with a hose to clear out dirt and improve airflow.

5. Replace Cabin Air Filter (if necessary)

Tools Required: None.
Locate the cabin air filter access panel (usually under the dashboard or behind the glove compartment).
Remove the old filter and replace it with a new one, ensuring the airflow direction matches the markings.