Circuit Description
WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
The motor relay (semiconductor relay) is built in the hydraulic brake booster and drives the pump motor based on a signal from the skid control ECU.
HINT:
The pump motor continues operation for the first 3 minutes, then repeats start and stop.