2003 LEXUS LS430 Factory Repair Manual

Page 137 of 4500

LEXUS LS430 2003  Factory Repair Manual TESTER CONNECTION SPECIFIED CONDITION
Tester ConnectionSpecified Condition
(S19-1) - Body ground1 Mohms or higher

Page 138 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 102: Identifying Stop Lamp Switch Connector And Driver Side J/B Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: Go to next step

Page 139 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 103: Identifying Driver Side J/B Connector And Skid Control ECU Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Page 140 of 4500

LEXUS LS430 2003  Factory Repair Manual OK: Go to next step  
9.RECONFIRM DTC 
a. Clear the DTC (see DTC CHECK/CLEAR
 ).  
b. Turn the ignition switch to the ON position.  
c. Check that the same DTC is recorded (see DTC CHECK/CLEAR
 ). 
OK

Page 141 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 105: Pump Motor Wiring Diagram 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.PERFORM ACTIVE TEST BY HAND-HELD TESTER (ABS MOTOR RELAY OPERATION) 
a. Connect the hand-held

Page 142 of 4500

LEXUS LS430 2003  Factory Repair Manual VEHICLE CONDITION / TEST DETAILS
OK: Go to next step  
The operation sound of the ABS motor is heard.  
OK: Go to step 2  
NG: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE REPLACEMENT
 )  
2.INSPECT HARN

Page 143 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 106: Identifying Skid Control ECU Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE REPLACEMENT
 )  
CIRCUIT DESCRIPTION 
The brake pedal load

Page 144 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 107: DTC C1267/67 Detection Condition And Trouble Area Description Chart 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
WIRING DIAGRAM 
Fig. 108: Brake Pedal Load Sensing Switch Wiring Diagram