Is it possible on a 1991 Honda Prelude Si to disable the ABS light without repairing system?

Yes, it is possible to disable the ABS light on a 1991 Honda Prelude Si without repairing the system, but it is not recommended as it could compromise your safety. The ABS (Anti-lock Braking System) light is designed to alert you to a problem with the ABS system, which is critical for maintaining control of the vehicle during braking. Disabling the light without fixing the underlying issue can lead to decreased braking performance and increased risk of accidents.

However, if you still choose to disable the ABS light, there are a few methods you can try:

1. Removing the ABS Fuse: Locate the ABS fuse in your vehicle's fuse box (usually under the hood or dashboard). Remove the fuse and the ABS light should turn off. However, this will completely disable the ABS system, leaving you without its safety benefits.

2. Disconnecting the ABS Sensor: Another method is to disconnect one of the ABS sensors from the wheel hub. This can trick the ABS module into thinking that there is no issue, and the light might turn off. However, this will compromise the ABS functionality on the affected wheel, potentially causing uneven braking.

3. ABS Control Unit (ECU) Modification: In some cases, it may be possible to modify the ABS ECU to stop the ABS light from coming on. This involves reprogramming the ECU or bypassing the internal fault detection circuitry. However, this modification can be complex and carries the risk of further damaging the ABS system.

Instead of disabling the ABS light, it's crucial to address the underlying problem causing it to illuminate. This might involve replacing a faulty wheel speed sensor, fixing a hydraulic component, or solving any electrical issues within the ABS system. These repairs may require professional assistance, but they are essential for maintaining the safety and performance of your vehicle.