Inspection Procedure

HINT:

Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the hand-held tester.

1. PERFORM ACTIVE TEST BY HAND-HELD TESTER (SKID CONTROL BUZZER) 
   1. Connect the hand-held tester to the DLC3.
   2. Start the engine.
   3. Select the item "VSC/BR WARN BUZ" in the ACTIVE TEST and operate the skid control buzzer on the hand-held tester.
      ACTIVE TEST
      
      

      Item	Vehicle Condition / Test Details	Diagnostic Note
      VSC / BR WARN BUZ	Turns VSC / BRAKE warning buzzer ON / OFF	Buzzer can be heard

   4. Check that skid control buzzer sounds "ON" and "OFF" with the hand-held tester.

      OK: The skid control buzzer sounds can be heard. 

   1. NG: Go to step 2 

   OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

2. INSPECT SKID CONTROL BUZZER ASSY 
   1. Disconnect the skid control buzzer connector V8.
   2. Apply a battery positive voltage to terminals 1 and 2 of the skid control buzzer connector, and check that the buzzer sounds.

      OK: The buzzer sound can be heard. 

      Fig 1: Applying Battery Positive Voltage To Terminals 1 And 2 Of Skid Control Buzzer Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE SKID CONTROL BUZZER ASSY 

   OK: Go to Next Step. 

3. CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU) 
   1. Disconnect the skid control buzzer connector V8 and the skid control ECU connector S1.
   2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      S1-30 (BZ) - V8-1 (BZ)	Below 1 Ω

   3. Measure the resistance according to the value (s) in the table below. Standard: 
      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      S1-30 (BZ) - Body ground	10 kΩ or higher

      Fig 2: Checking Harness And Connector (Skid Control Buzzer - Skid Control ECU)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to Next Step. 

4. INSPECT SKID CONTROL BUZZER ASSY 
   1. Measure the voltage of the skid control buzzer IG1 circuit.

      Standard: 

      10 to 14 V 

      Fig 3: Inspecting Skid Control Buzzer Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  )