how to fix the door ajar light staying on in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

479 words

Problem Statement

Learn how to fix the door ajar light staying on in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shorts.

Symptoms

•Door ajar warning light remains on
•Visual inspection shows all doors are closed
•Possible intermittent chime indicating door is ajar
•Difficulty locking doors using the key fob
•Increased battery drain if left unattended

Diagnostic Steps

1
Inspect each door's latch and striker for damage or misalignment.
2
Check the door ajar switches for proper function using a multimeter.
3
Use an OBD-II scanner to check for any related trouble codes.
4
Visually inspect wiring and connectors associated with the door latch and switch.
5
Test the door ajar switch by manually activating it while monitoring the light.

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

•Multimeter
•Screwdriver set
•Silicone-based lubricant
•Wire strippers

Parts Required

•Replacement door ajar switch
•Wiring connectors

Related Faults

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Diagnostic Steps

1
Inspect each door's latch and striker for damage or misalignment.
2
Check the door ajar switches for proper function using a multimeter.
3
Use an OBD-II scanner to check for any related trouble codes.
4
Visually inspect wiring and connectors associated with the door latch and switch.
5
Test the door ajar switch by manually activating it while monitoring the light.

Solution

1. Preparation

Gather tools and ensure the vehicle is parked on a level surface.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect Door Latches

Open each door and visually inspect the latch mechanism.
Ensure that the latch is clean and free from debris.
If necessary, lubricate the latch with a silicone-based lubricant to ensure smooth operation.

3. Test Door Ajar Switches

Locate the door ajar switch on each door, usually mounted near the latch.
Disconnect the wiring harness from the switch.
Using a multimeter, set it to continuity mode and check the switch. It should show continuity when pressed and no continuity when released.
If the switch fails the test, replace it.

4. Check Wiring and Connectors

Inspect the wiring harnesses for any signs of wear, fraying, or corrosion.
Ensure all connectors are secure and free from moisture.
Repair any damaged wiring or replace corroded connectors.

5. Reassemble and Test

Reconnect all switches and wiring.
Reconnect the negative battery terminal.
Test each door to ensure the door ajar light functions correctly when opening and closing.