what are the symptoms of a failing AC compressor in Toyota Corolla E170 (2013-2019)?

Toyota Corolla E170 (2013-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

509 words

Problem Statement

Learn how to diagnose and fix AC issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

HVAC

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Follow proper procedures for handling refrigerants to avoid injury.

Symptoms

•AC blows warm air instead of cold
•Unusual noises (clanking, grinding, or hissing) when the AC is running
•Frequent cycling of the AC compressor (turning on and off rapidly)
•Visible refrigerant leaks around the compressor
•Increased engine temperature during AC operation
•Reduced airflow from the AC vents

Diagnostic Steps

1
Check the AC system for any refrigerant leaks using a UV dye or electronic leak detector.
2
Inspect the AC compressor for physical damage or signs of wear.
3
Use an OBD-II scanner to check for related error codes indicating AC system issues.
4
Measure the voltage and ground at the AC compressor connector using a multimeter.
5
Test the AC pressure using a gauge set to ensure proper refrigerant levels.
6
Listen for abnormal sounds from the compressor while the system is operating.

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
•Refrigerant recovery machine
•AC gauge set
•Multimeter
•Socket set
•Torque wrench

Parts Required

•New AC compressor
•Replacement O-rings
•Refrigerant

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•AC blows warm air instead of cold

•Unusual noises (clanking, grinding, or hissing) when the AC is running

•Frequent cycling of the AC compressor (turning on and off rapidly)

•Visible refrigerant leaks around the compressor

•Increased engine temperature during AC operation

•Reduced airflow from the AC vents

Diagnostic Steps

1
Check the AC system for any refrigerant leaks using a UV dye or electronic leak detector.
2
Inspect the AC compressor for physical damage or signs of wear.
3
Use an OBD-II scanner to check for related error codes indicating AC system issues.
4
Measure the voltage and ground at the AC compressor connector using a multimeter.
5
Test the AC pressure using a gauge set to ensure proper refrigerant levels.
6
Listen for abnormal sounds from the compressor while the system is operating.

Solution

1. Preparation

Gather tools and parts required for repair.
Disconnect the vehicle battery to ensure safety.

2. Recover Refrigerant

Connect a refrigerant recovery machine to the AC service ports.
Recover the refrigerant to prevent environmental damage and comply with regulations.

3. Remove the AC Compressor

Disconnect the electrical connector from the AC compressor.
Remove the mounting bolts securing the compressor to the engine block using a socket set.
Carefully detach the compressor from the AC lines and set it aside.

4. Install New Compressor

Install the new AC compressor, ensuring that O-rings are properly lubricated and seated.
Tighten the mounting bolts to the manufacturer's specified torque (typically around 20-25 ft-lbs, but verify in service manual).
Reconnect the AC lines securely and attach the electrical connector.

5. Recharge the AC System

Evacuate the AC system using a vacuum pump for at least 30 minutes.
Recharge the system with the appropriate amount of refrigerant (usually around 1.5-2.0 lbs for most Toyota models, verify specific amount).
Start the engine and turn on the AC to check for proper operation.