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.

CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU)
1. Disconnect the skid control ECU connector S1 and ECM connector E6.
  
  Fig 1: Disconnecting Skid Control ECU Connector & ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 2 .
  Standard
  
  Fig 2: Measuring ENG & TRC Terminals Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 3 .
  Standard
  
  Fig 3: Measuring ENG & TRC Terminals To Body Ground Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (E1 OF ECM AND BODY GROUND)
1. Disconnect the ECM connector E8.
  
  Fig 4: Disconnecting ECM Connector E8
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 5 .
  Standard
  
  Fig 5: Measuring E1 To Body Ground Specifications Chart
  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 ).