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.

INSPECT DLC3 TERMINAL VOLTAGE (DLC3 TERMINAL VOLTAGE)
1. Turn the ignition switch to the ON position.
  
  Fig 1: Identifying DLC3 Terminal Voltage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in Fig 2 .
  Standard
  
  Fig 2: Measuring Voltage Between TC & CG Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step 4

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (ECM - DLC3)
1. Disconnect the ECM connector.
  
  Fig 3: Disconnecting ECM 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 TC 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 TC & 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 (ECM - SKID CONTROL ECU)
1. Disconnect the skid control ECU connector and the ECM connector.
  
  Fig 6: Disconnecting Skid Control ECU & ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 7 .
  Standard
  
  Fig 7: Measuring Resistance Between Terminals ENG Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 8 .
  Standard
  
  Fig 8: Measuring Resistance Between ENG & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE BRAKE ACTUATOR ASSY (SEE REPLACEMENT )

NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK ).
CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)
1. Disconnect the skid control ECU connector.
  
  Fig 9: Disconnecting Skid Control ECU (CG)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 10 .
  Standard
  
  Fig 10: Measuring Resistance Between CG & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (ECM - DLC3)
1. Disconnect the ECM connector.
  
  Fig 11: Disconnecting ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 12 .
  Standard
  
  Fig 12: Measuring Resistance Between Terminals TC
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 13 .
  Standard
  
  Fig 13: Measuring Resistance Between TC & Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.
CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU)
1. Disconnect the skid control ECU connector and the ECM connector.
  
  Fig 14: Disconnecting Skid Control ECU & ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in Fig 15 .
  Standard
  
  Fig 15: Measuring Resistance Between Terminals ENG
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 16 .
  Standard
  
  Fig 16: Measuring Resistance Between ENG & 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 ).