How to remove a Honda Prelude ECU (97-01)
2 min read
1 year ago
Published on Aug 04, 2024
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Table of Contents
Introduction
This tutorial will guide you through the process of removing the ECU (Engine Control Unit) from a 5th generation (1997-2001) Honda Prelude. The ECU is located in the passenger footwell, and knowing how to safely remove it is crucial for repairs or upgrades. Following these steps will help you do it without causing any damage to the vehicle.
Step 1: Locate the ECU
- The ECU is found in the passenger footwell beneath the carpet.
- Remove the rug or cover to access the ECU.
Step 2: Understand the ECU Connection
- The ECU is connected with clips and bolts. It's important to handle these carefully to avoid breaking any components.
- Pull the ECU gently towards you and slightly to the left to remove it from its housing.
Step 3: Gather Necessary Tools
- You will need:
- A 10 mm deep socket
- A ratchet
- A ratchet extension
Step 4: Remove the Mounting Bolts
- Locate the four 10 mm bolts securing the ECU:
- One bolt on the left side
- One bolt on the right side
- One bolt at the top corner
- One bolt at the bottom corner
- Use the 10 mm deep socket to remove these bolts.
Step 5: Disconnect the ECU
- After removing the bolts, the ECU will still be connected by two smaller bolts (7 mm):
- Remove the two 7 mm bolts located at the top of the ECU.
- Carefully disconnect the connectors from the ECU:
- Identify and pull out the blue connector and the small gray connector.
Step 6: Remove the ECU
- With the bolts and connectors removed, gently pull the ECU out of its housing.
- Ensure that any clips remain intact in the housing to prevent damage.
Conclusion
You have now successfully removed the ECU from your Honda Prelude. This process is essential for various repairs or upgrades to the vehicle’s electronics. Always handle the ECU and its connectors with care to avoid damage. If you're planning to install a new ECU or perform further diagnostics, refer to the vehicle's manual for specific instructions. Happy wrenching!