2003 LEXUS LS430 Factory Repair Manual

Page 185 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 131: Skid Control Buzzer Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
HINT: 
Start the inspection from step 1 when using the hand-held tester and start from

Page 186 of 4500

LEXUS LS430 2003  Factory Repair Manual VEHICLE CONDITION / TEST DETAILS
d. Check that skid control buzzer sounds by operating with the hand-held tester.  
OK: Go to next step  
The skid control buzzer sounds in accordance with operation of

Page 187 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 132: Inspecting Skid Control Buzzer 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: Go to next step  
3.CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU) 
a. Disconnect the

Page 188 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 133: Identifying Skid Control ECU Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
Standard:  
TESTER CONNECTION SPECIFIED CONDITION 
c. Measure the resistance accordin
g to the

Page 189 of 4500

LEXUS LS430 2003  Factory Repair Manual Standard:  
TESTER CONNECTION SPECIFIED CONDITION 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE REPLACEMENT
 )  
CIRCUIT DESCRIPTION 
Connecting terminals

Page 190 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 134: TC And CG Terminal Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.INSPECT DLC3 TERMINAL VOLTAGE (DLC3 TERMINAL VOLTAGE) 
a. Turn the ignition switch to

Page 191 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 135: Identifying DLC3 Terminals (1 Of 3) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: Go to next step  
2.CHECK CAN COMMUNICATION SYSTEM 
a. Is the DTC output for CAN communication system?

Page 192 of 4500

LEXUS LS430 2003  Factory Repair Manual 3.INSPECT HARNESS AND CONNECTOR (SKID CONTROL ECU - ECM) 
a. Disconnect the slid control ECU connector.  
b. Measure the resistance according to the value (s) in the table below. 
Standard:  
TESTER C