2003 LEXUS LS430 Factory Repair Manual

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Page 4417 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 4: Function Of Component Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 2.KEY REMINDER WARNING SYSTEM FUNCTION a. w/o Smart key system: When the driver door is opened with the ignition switch i

Page 4418 of 4500

LEXUS LS430 2003 Factory Repair Manual A: GO TO NEXT STEP 4.(See PROBLEM SYMPTOMS TABLE ) a. If the fault is not listed on the problem symptoms table, proceed to A. b. If the fault is listed on the problem symptoms table, proceed to

Page 4419 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 5: Customer Problem Analysis Check Sheet Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. HINT: The following items can be customized. Meter ECU: CUSTOMIZE PARAMETERS Display (Item)DefaultCont

Page 4420 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 6: Problem Symptoms Table Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 1.CHECK TRANSPONDER KEY ECU ASSY KEY REMND SOUNDNORMALFunction that changes key reminder buzzer's frequencyNORMAL/FA

Page 4421 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 7: >Identifying Terminals Of T9 ECU Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Disconnect the T9 ECU connector. b. Measure the voltage and resistance of the wire harness side connector.

Page 4422 of 4500

LEXUS LS430 2003 Factory Repair Manual If the result is not as specified, there may be a malfunction on the wire harness side. c. Reconnect the T9 ECU connector. d. Measure the voltage of the connector. Standard: SPECIFIED CONDITION

Page 4423 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 8: Identifying Terminals Of Steering Lock ECU Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Disconnect the S46 ECU connector. b. Measure the voltage and resistance of the wire harness side

Page 4424 of 4500

LEXUS LS430 2003 Factory Repair Manual If the result is not as specified, there may be a malfunction on the wire harness side. c. Reconnect the S46 ECU connector. d. Measure the voltage of the connector. Standard: SPECIFIED CONDITIO
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