2003 LEXUS LS430 Diagram AC

Fig. 69: Identifying Skid Control ECU Connector Terminals
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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
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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)

Fig. 75: DTC C1231/31 Detecting Condition And Trouble Area
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WIRING DIAGRAM

Fig. 76: Steering Angle Sensor Wiring Diagram
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INSPECTION PROCEDURE
HINT:

Fig. 79: DTC C1232/32 And DTC C1381/97 Detecting Condition And Trouble Area
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WIRING DIAGRAM

Fig. 80: Deceleration Sensor Wiring Diagram
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INSPECTION PROCEDURE
HINT:

Fig. 87: Identifying Speed Sensor Rotor Location
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CIRCUIT DESCRIPTION
Fig. 88: DTC C1241/41 Detecting Condition And Trouble Area

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WIRING DIAGRAM

Fig. 89: Low Battery Wiring Diagram
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INSPECTION PROCEDURE
1.INSPECT FUSE (ABS-IG FUSE)
a. Remove the ABS-IG Fuse from the driver side J/B.
b. Measure the resistance according to the value (s) in the table below.
Standard:
TESTER CONNECTION SPECIFIED CONDITION
Tester ConnectionSpecified Condition
ABS-IG fuseBelow 1 ohms (Continuity)