2003 LEXUS LS430 Factory Repair Manual

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Page 1233 of 4500

LEXUS LS430 2003 Factory Repair Manual c. SUSPENSION CONTROL ECU HINT: DTC communication uses the SIL line. SUSPENSION CONTROL ECU DIAGNOSTIC TROUBLE CODE CHART d. TELEVISION CAMERA ECU HINT: The television camera ECU is connected to

Page 1234 of 4500

LEXUS LS430 2003 Factory Repair Manual CIRCUIT DESCRIPTION When any DTC for the CAN communication system is output, first measure the resistance between the terminals of the DLC3 to specify the trouble area, and check that there is no sh

Page 1235 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 31: Wiring Diagram - Can Bus Line (1 Of 2) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 1236 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 32: Wiring Diagram - Can Bus Line (2 Of 2) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE 1.CHECK CAN BUS LINE (MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT

Page 1237 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 33: Identifying DLC3 Connector terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Turn the ignition switch to the LOCK position. b. Measure the resistance according to the value (s) in

Page 1238 of 4500

LEXUS LS430 2003 Factory Repair Manual NG-A: CHECK CAN MAIN BUS LINE FOR DISCONNECTION (W/O LEXUS NAVIGATION SYSTEM) NG-B: CHECK CAN MAIN BUS LINE FOR DISCONNECTION (W/ LEXUS NAVIGATION SYSTEM) NG-C: CHECK CAN BUS LINES FOR SHORT CIR

Page 1239 of 4500

LEXUS LS430 2003 Factory Repair Manual a. Measure the resistance according to the value (s) in the table below. Standard: ECM CONNECTOR TERMINALS RESISTANCE HINT: NG-A: w/o LEXUS Navigation System. NG-B: w/ LEXUS Navigation System.

Page 1240 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 35: Identifying DLC3 Connector terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Measure the resistance according to the value (s) in the table below. Standard: ECM CONNECTOR TERMIN
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