why does my air conditioning stop working in my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

570 words

Problem Statement

Learn how to diagnose and fix air conditioning issues in Toyota Corolla E170 (2013-2019). 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 battery before working on electrical systems.
•Allow engine to cool before opening the AC system.

Symptoms

•Air conditioning blows warm air
•Unusual noises when the AC is turned on
•AC compressor does not engage
•Condensation or water pooling inside the vehicle
•Foul odor coming from AC vents
•AC control panel lights are unresponsive

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues.
2
Inspect the AC system's refrigerant level using a refrigerant gauge.
3
Examine the AC compressor for signs of damage or wear.
4
Inspect the AC fuses and relays for continuity.
5
Test the AC clutch for proper engagement when the system is activated.
6
Check for any visible leaks in the AC system components.

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 gauge set
•Refrigerant canister
•Socket set
•Torque wrench
•Serpentine belt tool

Parts Required

•Refrigerant (R134a)
•AC compressor (if replacement is necessary)
•Cabin air filter (if replacement is necessary)

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues.
2
Inspect the AC system's refrigerant level using a refrigerant gauge.
3
Examine the AC compressor for signs of damage or wear.
4
Inspect the AC fuses and relays for continuity.
5
Test the AC clutch for proper engagement when the system is activated.
6
Check for any visible leaks in the AC system components.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the vehicle battery to ensure safety.
Ensure the work area is well-ventilated.

2. Recharge Refrigerant

Tools Required: Refrigerant gauge set, refrigerant canister
Check the current refrigerant level and recharge if low.
1. Connect the low-pressure side of the refrigerant gauge to the AC service port.
2. Start the engine and turn on the AC to the maximum setting.
3. Open the refrigerant canister valve and add refrigerant until the gauge indicates proper levels (typically between 30-40 psi).
4. Disconnect the gauge set and replace the service port cap.

3. Replace AC Compressor (if faulty)

Tools Required: Socket set, torque wrench, serpentine belt tool
If the compressor is not engaging or is damaged:
1. Remove the serpentine belt by using the serpentine belt tool to relieve tension.
2. Disconnect electrical connectors and refrigerant lines from the compressor.
3. Unbolt the compressor from its mounting points and remove it from the engine bay.
4. Install the new compressor by reversing the removal steps, ensuring proper torque specifications are followed (typically around 25-30 ft-lbs).
5. Reconnect refrigerant lines and electrical connectors.

4. Replace Cabin Air Filter (if needed)

Tools Required: None (mostly hand tools)
If there's a foul odor or reduced airflow:
1. Locate the cabin air filter access panel (usually under the glove compartment).
2. Remove the panel and pull out the old filter.
3. Insert the new filter, ensuring correct orientation for airflow direction.
4. Reattach the access panel.