Inspection Procedure

1. Connect Techstream to the DLC3.
2. Start the engine.
3. Select the Active Test mode on Techstream.

   ABS / VSC / TRAC: 

   ACTIVE TEST
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Motor Relay	ABS motor relay	Relay ON / OFF	Operation of motor (clicking sound) can be heard

4. Check the operation sound of the ABS motor individually when operating it with Techstream.

   OK: The operation sound of the ABS motor should be heard. 

   NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).

NG: Go to step 2 

OK: REPLACE BRAKE ACTUATOR ASSEMBLY 

1. Disconnect the skid control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S3-1 (GND2) - Body ground	Below 1 Ω

   NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).
Fig 1: Identifying Skid Control ECU Connector S3 Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT) 

OK: REPLACE BRAKE ACTUATOR ASSEMBLY