2003 LEXUS LS430 Factory Repair Manual

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Page 1265 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: REPLACE ECM (SEE REPLACEMENT) MODE DESCRIPTION Fig. 60: Problem Symptom Diagnostic Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. WIRING DIAGRAM

Page 1266 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 61: Wiring Diagram - Gateway ECU Communication Stop Mode Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE 1.CHECK CAN BUS LINE FOR DISCONNECTION (GATEWAY ECU SUB BUS LINE)

Page 1267 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 62: Disconnecting Gateway ECU Connector (G3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Turn the ignition switch to the LOCK position. b. Disconnect the gateway ECU connector (G3). c.

Page 1268 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 63: Disconnecting Gateway ECU Connector (G3) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Measure the resistance according to the value (s) in the table below. b. Measure the voltage accor

Page 1269 of 4500

LEXUS LS430 2003 Factory Repair Manual OK: REPLACE GATEWAY ECU MODE DESCRIPTION Fig. 64: Problem Symptom Diagnostic Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. WIRING DIAGRAM

Page 1270 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 65: Wiring Diagram - Suspension Control ECU Communication Stop Mode Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. INSPECTION PROCEDURE 1.CHECK CAN BUS LINE FOR DISCONNECTION (SUSPENSION CONTROL

Page 1271 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 66: Disconnecting Suspension Control ECU Connector (A20) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Turn the ignition switch to the LOCK position. b. Disconnect the suspension control EC

Page 1272 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 67: Disconnecting Suspension Control ECU Connector (A20) Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. a. Measure the resistance according to the value (s) in the table below. b. Measure the v
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