2003 LEXUS LS430 Factory Repair Manual

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Page 2489 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 57: Disconnecting Distance Control ECU Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

Page 2490 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 58: Disconnecting Laser Sensor Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. OK: Go To Next Step. 2.INSPECT LASER SENSOR a. Reconnect the laser sensor connector. b. Measure the vo

Page 2491 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 59: Identifying Laser Sensor Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. c. Check the signal waveform between terminal LRDD (L1-3) of the laser sensor and body ground. OK: A wavef

Page 2492 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 60: Signal Waveform Graph Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. OK: REPLACE CRUISE CONTROL ECU ASSY (SEE REPLACEMENT ) CIRCUIT DESCRIPTION The laser sensor and cruise control ECU (di

Page 2493 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 61: DTC U1102 Problem Symptom Diagnostic Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. WIRING DIAGRAM Fig. 62: Wiring Diagram - Lost Communication With Radar Sensor Courtesy of TOYOTA M

Page 2494 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 63: Disconnecting Distance Control ECU Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 2495 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 64: Disconnecting Laser Sensor Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OK: Go To Next Step. 2.INSPECT CRUISE CONTROL ECU ASSY

Page 2496 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 65: Identifying Cruise Control ECU Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. d. Check the signal waveform between terminal LRRD (D2-23) of the cruise control ECU (distance control
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