2003 LEXUS LS430 Factory Repair Manual

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Page 129 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 95: Identifying Skid Control ECU Connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. CIRCUIT DESCRIPTION Recognition of brake operation by sending stop lamp signal to skid control

Page 130 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 97: Stop Light Switch Wiring Diagram Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE 1.CHECK STOP LAMP SWITCH OPERATION a. Check that the stop light comes on when the brake

Page 131 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 98: Pedal Condition Reference Table Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: Go to step 6 HINT: Check the stop lamp bulb as it may have burnt out. OK: 2.INSPECT MULTIPLEX COMMUNICA

Page 132 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 99: Identifying Driver Side J/B ECU connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step 4.CHECK HARNESS AND CONNECT

Page 133 of 4500

LEXUS LS430 2003 Factory Repair Manual b. Measure the resistance according to the value (s) in the table below. Standard: TESTER CONNECTION SPECIFIED CONDITION Standard: TESTER CONNECTION SPECIFIED CONDITION Tester ConnectionSpecif

Page 134 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 100: Identifying Driver Side J/B ECU Connector And Skid Control ECU Connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE HARNESS OR CONNECTO R

Page 135 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: Go to next step 5.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 136 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 101: Identifying Stop Lamp Switch Assy Connector Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPLACE STOP LAMP SWITCH ASSY OK: Go to next step 7.CHECK HARNESS AND CONNECTOR (
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