Hydraulic Brake Booster: Inspection

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HYDRAULIC BRAKE BOOSTER PUMP OPERATION
1. Connect the positive (+) lead from the battery to terminal 1 of the pump, and the negative (-) lead to terminal 2.
2. Check that the pump operates normally.
  
  Fig 1: Checking Hydraulic Brake Booster Pump Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002