2003 LEXUS LS430 Factory Repair Manual

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Page 2585 of 4500

LEXUS LS430 2003 Factory Repair Manual INSPECTION PROCEDURE HINT: This circuit uses CAN for communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system is/are ou

Page 2586 of 4500

LEXUS LS430 2003 Factory Repair Manual 4. Clear the DTC and then recheck for DTCs. OK: DTC is not output. HINT: If DTC P1617 is still output after performing the above procedures, replace the distance control ECU. If the DTC P1617 i

Page 2587 of 4500

LEXUS LS430 2003 Factory Repair Manual CIRCUIT DESCRIPTION The ECM sends signals such as A/T information signal, dynamic radar cruise control operation signal, brake operation demand signal, buzzer operation demand signal and low speed m

Page 2588 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 57: DTC P1575 Problem Symptom Diagnostic Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. HINT: If the vehicle ahead in the same lane significantly decreases its speed or another vehicle pul

Page 2589 of 4500

LEXUS LS430 2003 Factory Repair Manual circuit, one or more DTCs in the CAN communication system is/are output. 1.CHECK BRAKE SYSTEM (SEE HOW TO PROCEED WITH TROUBLESHOOTING ) CIRCUIT DESCRIPTION The Millimeter wave radar sensor and cr

Page 2590 of 4500

LEXUS LS430 2003 Factory Repair Manual WAVE RADAR SENSOR) a. Disconnect the distance control ECU and millimeter wave radar sensor connectors. b. Measure the resistance according to the value(s) in the table below. Standard: DISTANCE

Page 2591 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 62: Disconnecting Millimeter Wave Radar 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 MILLIMET

Page 2592 of 4500

LEXUS LS430 2003 Factory Repair Manual c. Check the signal waveform between terminal LRDD (M7-3) of the millimeter wave radar sensor and body ground. OK: A waveform similar to that in the illustration to the left is output. HINT: Ga
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