Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OPERATION OF BRAKE ACTUATOR (PUMP MOTOR)
1. Disconnect the brake actuator connector.
2. Connect positive (+) lead to terminal BM and negative (-) lead to terminal GND of the brake actuator. Check that the pump motor is operating.
  OK:
  
  The running sound of the pump motor should be heard.
Fig 1: Identifying Brake Actuator Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE ABS & TRACTION ACTUATOR ASSY (See REPLACEMENT )
2. OK: GO TO NEXT STEP.
INSPECT HARNESS AND CONNECTOR (GND2 OF SKID CONTROL ECU AND BODY GROUND) (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See REPLACEMENT )