Brake pedal goes to floor and the ABS light on?

If the brake pedal is going to the floor, it can cause the warning lights to come on because of an imbalance in the brake system. First, I would check the fluid level inside the brake master, if empty remove the wheels and inspect the brake pads and look for leaks at the caliper and brake flex hoses. If the pads need replacing be sure to service, the caliper slides. If the system is full, the brake master went bad, here is a guide to help and a video to show how to bleed the brake master before installation:

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

and

https://www.youtube.com/watch?v=WDxvEQrMkBg

Here is a video that shows how to change the brake pads:

https://www.youtube.com/watch?v=CDe5xvG31HU

Here is how to change out the brake master on your car and how to bleed the system afterwards. You must bleed the master before installation. Check out the images (below). Please upload pictures or videos in your response of any problems.