2003 LEXUS LS430 Wiring diagram

Fig. 45: DTC C0200/31 And DTC C0205/32 Detecting Condition And Trouble Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
DTC C0200/31 is for the right front speed sensor.
DTC C0205/32 is for the left front speed sensor.
WIRING DIAGRAM
Fig. 46: Right Front Speed Sensor Wiring Diagram

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INSPECTION PROCEDURE
1.CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
a. Using the hand-held tester, check for any momentary interruption in the wire harness and connector
corresponding to a DTC (see CHECK FOR INTERMITTENT PROBLEMS
).

Refer to DTC C0200/31 RIGHT FRONT SPEED SENSORor DTC C0205/32 LEFT FRONT SPEED
SENSOR .
Fig. 53: DTC C0210/33 And DTC C0215/34 Detecting Condition And Trouble Area

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
DTC C0210/33 is for the right rear speed sensor.
DTC C0215/34 is for the left rear speed sensor.
WIRING DIAGRAM
Fig. 54: Rear Speed Sensor Wiring Diagram

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INSPECTION PROCEDURE
1.CHECK HARNESS AND CONNECTOR
a. Usin
g the hand-held tester, check for any momentary interruption in the wire harness and connector

Fig. 60: DTC C0226/21 And DTC C1225/25 Detecting Condition And Trouble Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAM

Fig. 61: SFL Solenoid Wiring Diagram
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INSPECTION PROCEDURE
1.RECONFIRM DTC
HINT:
This code is detected when a problem is determined in the brake actuator assy.
The ABS solenoid circuit is in the brake actuator assy. Therefore, solenoid circuit inspection relay unit
inspection cannot be performed. Be sure to check if the DTC code is output before replacing the brake
actuator assy.
a. Clear the DTC (see DTC CHECK/CLEAR
).
b. Start the engine.
c. Drive the vehicle at the speed of 4 mph (6 km/h) or more.
d. Check that the same DTC is recorded.

Fig. 62: DTC C0273/13 And DTC C0274/14 Detecting Condition And Trouble Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAM

Fig. 63: ABS Motor Relay Wiring Diagram
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INSPECTION PROCEDURE
1.PERFORM ACTIVE TEST BY HAND-HELD TESTER (ABS MOTOR RELAY OPERATION)
a. Connect the hand-held tester to the DLC3.
b. Start the engine.
c. Select the ACTIVE TEST mode on the hand-held tester.
d. Check the operation sound of the ABS motor individually when operating it with the hand-held
tester.

Fig. 69: Identifying Skid Control ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE REPLACEMENT
)
CIRCUIT DESCRIPTION
The ABS solenoid relay is built in the ABS & TRACTION Actuator assy. This relay supplies power to each
ABS solenoid. If the initial check is OK, after the ignition switch is turned to the ON position, the relay stays
on.
Fig. 70: DTC C0278/11 And DTC C0279/12 Detecting Condition And Trouble Area

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WIRING DIAGRAM

Fig. 71: ABS Solenoid Relay Wiring Diagram
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INSPECTION PROCEDURE
1.INSPECT FUSE (ABS1 FUSE)
a. Remove the ABS 1 fuse from the fusible link block.
b. Measure the resistance according to the value (s) in the table below.
Standard:
ABS 1 FUSE DESCRIPTION
ABS 1 fuseBelow 1 ohms (Continuity)