2003 LEXUS LS430 Factory Repair Manual

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Page 2505 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 72: Disconnecting Laser Sensor Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: Go to step 3 OK: Go To Next Step. 2.CHECK WIRE HARNESS AND CONNECTOR a. Disconnect the ECM E3 conn

Page 2506 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 73: Disconnecting Laser Sensor Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 2507 of 4500

LEXUS LS430 2003 Factory Repair Manual

Page 2508 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 74: Disconnecting ECM E3 Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS

Page 2509 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 75: Disconnecting Laser Sensor Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Fig. 76: Disconnecting Cruise Control ECU (Distance Control ECU) Connector Courtesy of TOYOTA MOTOR SALES,

Page 2510 of 4500

LEXUS LS430 2003 Factory Repair Manual internal contact point of the cruise control main switch is turned on with the switch operation. The ECM then reads the resistance value that has been changed by the switch operation to control MODE,

Page 2511 of 4500

LEXUS LS430 2003 Factory Repair Manual a. Connect the hand-held tester to the DLC3. b. Turn the ignition switch to the ON position. c. According to the display on the tester, read the "DATA LIST". Fig. 78: Identifying Cruise

Page 2512 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: When cruise control main switch operation is performed the standard values will be above. Result: RESULT DETAIL B: Go to step 2 C: REPLACE CRUISE CONTROL MAIN SWITCH ASSY (SEE REPLACEMENT
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