Inspection Procedure

HINT:

Start the inspection from step  1 when using the intelligent tester and start from step  2 when not using the intelligent tester.

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY OPERATION) 
   1. Connect the intelligent tester to the DLC3.
   2. Start the engine.
   3. Select the ACTIVE TEST mode on the intelligent tester.
   4. Check the operation sound of the ABS motor individually when operating it with the intelligent tester.

      ABS /TRAC /VSC: 

      DATA LIST - ABS/TRAC/VSC
      
      

      Item	Vehicle Condition/Test Details	Diagnostic Note
      ABS MOT RELAY	ABS motor relay / ON or OFF	Operation of motor (clicking sound) can be heard

      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  (See REMOVAL  )

2. INSPECT HARNESS AND CONNECTOR (GND1 OF SKID CONTROL ECU AND BODY) 
   1. Disconnect the skid control ECU connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION TABLE
      
      

      Tester Connection	Specified Condition
      S1 - 32 (GND1) - Body ground	Below 1 Ω

      Fig 1: Identifying GND1 Of Skid Control ECU & Body

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL  )