How to Replace the Turn Signal Flasher in a 1987 Toyota Corolla

Introduction

Replacing the turn signal flasher in your 1987 Toyota Corolla is a straightforward repair that can restore proper operation of your turn signals if they have stopped working or are flashing rapidly. This flasher unit is easy to access and replace in less than an hour with some basic hand tools.

In this guide, I will walk through the complete process of replacing the turn signal flasher in a 1987 Toyota Corolla step-by-step. I will cover how to identify common symptoms of a bad flasher, locate the unit under the dash, remove and replace it with a new one, and test for proper operation.

Symptoms of a Faulty Turn Signal Flasher

Here are some common signs that your turn signal flasher may need to be replaced:

• Turn signals do not flash at all - Neither left nor right turn signals function when activated. The flasher unit is likely faulty.
• Rapid flashing - Turn signals flash abnormally quickly, usually twice as fast as normal. This indicates the flasher is not operating properly.
• Inconsistent flashing - Turn signals intermittently stop flashing or flash irregularly. The unit is likely worn out.
• No click from relay - When activating a turn signal, no audible click is heard from the flasher unit under the dash.

If you are experiencing any of these symptoms, replacing the flasher may restore proper operation.

Locating the Turn Signal Flasher

The turn signal flasher unit on a 1987 Corolla is located under the dashboard on the driver's side. Here are the steps to access it:

Open Driver's Side Access Panel

• Open the driver's door and locate the small access panel under the dash near the hood release.
• Remove the fastener screws with a Phillips screwdriver.
• Pull off the plastic access panel to expose the components inside.

Identify Flasher Unit

• Look for a black cylindrical relay labeled "Flasher" inside the access opening.
• It will be positioned vertically and have two wire connectors plugged into it.

Removing Old Flasher Unit

With the old flasher unit located, follow these instructions to remove it:

Disconnect Wiring Connectors

• Squeeze the tabs on the two wiring connectors and detach them from the flasher.

Unmount Flasher

• If the flasher is clipped or screwed into a bracket, remove the fastener to detach it.

Remove Old Unit

• The old flasher unit can now be pulled free from its mounting position.

Installing New Turn Signal Flasher

Installing the new replacement flasher is straightforward:

Insert New Flasher

• Take the new flasher unit and insert it into the same location as the old one.

Connect Wiring

• Push the two wiring connectors onto the tabs on the new flasher until they click into place.

Mount Flasher

• If your original flasher was secured with a clip or screw, reinstall it in the bracket to hold the new unit in place.

Testing Operation

With the new flasher installed, here's how to test for proper operation:

Turn Ignition On

• Turn the ignition key to the "On" position without starting the engine.

Activate Turn Signals

• Operate the left and right turn signals. Check that they flash at a normal rate consistently.

Listen for Clicking

• Verify that you hear a rhythmic clicking sound from the flasher when the turn signals are on.

If the turn signals now function normally, the new flasher has resolved the issue! Be sure to reinstall the access panel before driving.

Conclusion

Replacing a faulty turn signal flasher on a 1987 Toyota Corolla is a quick and straightforward repair. Following the steps in this guide, you can easily access, remove and replace the flasher unit in less than an hour. Proper turn signal operation is crucial for safe driving, so replace your flasher promptly if you experience rapid flashing or other abnormal symptoms. Feel free to refer back to this guide anytime your Corolla's turn signals need servicing.