Forgot about my MOT which expires on Saturday, so I'm booked in Saturday morning. And now the orange ABS light is on all the time. I know my limitations, and NEED this fixed for Saturday!

Previously, I would turn on the ignition, the pump would prime, and the light would go out. Then, when I reached 30-40mph the light would come back on and stay on till the car was parked.

I don't think the ABS ever functioned but I never pushed the car hard enough to find out.

Recently, I had the dash out for welding so disconnected the ECU and ABS ECU and when I've put it all together the orange light comes on with the ignition and stays on, but the pump fires up as required.

The red light goes out when the handbrake is released.

While I was working in the garage with the car in pieces I noticed that occasionally the ABS pump would come on even with no key in the ignition.

Any help gratefully received....