Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

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.

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.
  
  Fig 1: VSC/Brake Warning Buzzard Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that skid control buzzer sounds "ON" and "OFF" with the hand-held tester.
Standard:
1. The skid control buzzer sounds in accordance with operation of the hand-held tester.
NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK ).

NG: Go to step 2

OK: REPLACE BRAKE ACTUATOR ASSY
INSPECT SKID CONTROL BUZZER ASSY
1. Disconnect the skid control buzzer connector V11.
2. Apply a battery positive voltage to terminals 1 and 2 of the skid control buzzer connector, and check that the buzzer sounds.
  
  Fig 2: Applying Battery Voltage To Terminals 1 & 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE SKID CONTROL BUZZER ASSY

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)
1. Disconnect the skid control buzzer connector V11 and the skid control ECU connector S1.
  
  Fig 3: Disconnecting Skid Control Buzzer & Skid Control ECU Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 4 .
  Standard
  
  Fig 4: Measuring Resistance Between Terminals BZ Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 5 .
  Standard
  
  Fig 5: Measuring Resistance Between BZ & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE BRAKE ACTUATOR ASSY (SEE REPLACEMENT )

NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK ).