Toyota Corolla E170 (2013-2019) air conditioning not blowing cold air, what’s wrong?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

594 words

Problem Statement

Learn how to diagnose and fix the AC not blowing cold air in a 2013-2019 Toyota Corolla E170. 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 battery before working on electrical systems.
•Allow engine to cool before opening the AC components.

Symptoms

•Air conditioning system blowing warm air
•Unusual noises from the AC compressor
•"Check AC" warning on the dashboard
•Reduced airflow from the vents
•Frequent cycling of the AC compressor
•Bad odor coming from the vents

Diagnostic Steps

1
Check the refrigerant level using a manifold gauge set.
2
Inspect the AC compressor for any visible damage or leaks.
3
Test the AC system's fuses and relays for continuity.
4
Examine the cabin air filter for clogs or restrictions.
5
Scan for any error codes using an OBD-II scanner related to the AC system.
6
Inspect the AC condenser for debris or damage.

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

•Manifold gauge set
•OBD-II scanner
•Basic hand tools
•Vacuum pump

Parts Required

•Refrigerant
•Cabin air filter
•AC compressor

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the refrigerant level using a manifold gauge set.
2
Inspect the AC compressor for any visible damage or leaks.
3
Test the AC system's fuses and relays for continuity.
4
Examine the cabin air filter for clogs or restrictions.
5
Scan for any error codes using an OBD-II scanner related to the AC system.
6
Inspect the AC condenser for debris or damage.

Solution

1. Preparation

Gather tools and parts: manifold gauge set, OBD-II scanner, basic hand tools, refrigerant (if needed), and a replacement cabin air filter.
Ensure the vehicle is parked on a level surface and the engine is off before starting.
Disconnect the battery to prevent any electrical issues.

2. Refrigerant Check and Recharge

Sub-steps:
1. Connect the manifold gauge set to the AC service ports (low and high side).
2. Observe the pressure readings; if low, there may be a leak or insufficient refrigerant.
3. If necessary, evacuate the system using a vacuum pump to remove moisture and air.
4. Recharge the system with the appropriate amount of refrigerant as specified in the owner’s manual.
Tools Required: Manifold gauge set, vacuum pump.

3. Inspect and Replace Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter housing, typically behind the glove box.
2. Remove the glove box to access the filter housing.
3. Remove the old cabin air filter and inspect it for dirt or blockages.
4. Install a new cabin air filter in the correct orientation.
Tools Required: Basic hand tools (screwdriver).

4. Inspect and Repair AC Compressor

Sub-steps:
1. Visually inspect the AC compressor for any signs of damage, leaks, or unusual noises.
2. If the compressor is faulty, disconnect the electrical connector and remove the mounting bolts.
3. Install the new AC compressor and reconnect the electrical connector.
4. Recharge the AC system again if the compressor was replaced.
Tools Required: Socket set, torque wrench.

5. Final System Check

Sub-steps:
1. Reconnect the battery and start the engine.
2. Turn on the AC system and set it to the coldest setting.
3. Monitor the temperature and ensure the system is functioning correctly.
Safety Warnings: Ensure the engine is cool before working on the AC system components.