how to troubleshoot air conditioning not turning on in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

511 words

Problem Statement

Learn how to troubleshoot and fix the air conditioning not turning on in a 2013-2019 Toyota Corolla E170. Step-by-step guide with diagnostic procedures.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Always wear safety goggles when working with refrigerants.

Symptoms

•No response when the A/C button is pressed
•No cold air from the vents
•A/C compressor not engaging
•A/C system making unusual noises (if any)
•Warning lights illuminated on the dashboard (if applicable)

Diagnostic Steps

1
Check the A/C fuse in the fuse box for continuity.
2
Verify the A/C refrigerant level using a manifold gauge set.
3
Inspect the A/C compressor for any visible damage or wear.
4
Test the A/C clutch for electrical continuity with a multimeter.
5
Scan the vehicle’s onboard computer for any trouble codes using an OBD-II scanner.
6
Inspect the climate control module for proper function and any error codes.

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
•Multimeter
•Manifold gauge set
•Socket set
•Safety goggles

Parts Required

•A/C fuse (if blown)
•Refrigerant
•A/C clutch (if faulty)
•Climate control module (if 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 fuse in the fuse box for continuity.
2
Verify the A/C refrigerant level using a manifold gauge set.
3
Inspect the A/C compressor for any visible damage or wear.
4
Test the A/C clutch for electrical continuity with a multimeter.
5
Scan the vehicle’s onboard computer for any trouble codes using an OBD-II scanner.
6
Inspect the climate control module for proper function and any error codes.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, manifold gauge set, socket set, and safety goggles.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery terminal to prevent electrical shock.

2. Check and Replace the A/C Fuse

Locate the fuse box, usually found under the dashboard or in the engine compartment.
Identify the A/C fuse using the fuse diagram on the cover.
Remove the fuse and inspect it for continuity; replace it if blown.

3. Recharge A/C System

Connect the manifold gauge set to the A/C service ports (high and low).
Check the refrigerant level; if low, proceed to recharge.
Use a refrigerant can with a gauge to add refrigerant until the correct pressure is achieved.

4. Test A/C Compressor and Clutch

Reconnect the battery and start the engine.
Set the A/C to the maximum setting.
Use a multimeter to check for electrical continuity at the A/C clutch connector.
If there is no continuity, replace the A/C clutch or compressor.

5. Inspect and Replace Climate Control Module (if needed)

If previous steps do not resolve the issue, access the climate control module.
Remove the dashboard trim (if necessary) to access the module.
Inspect for any signs of damage or corrosion. Replace the module if faulty.