2003 LEXUS LS430 Factory Repair Manual

Page 1345 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 136: Identifying DLC3 Connector terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Measure the resistance according to the value (s) in the table below.  
Standard:  
DLC3 CONNECTOR TERM

Page 1346 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 137: Disconnecting Steering Sensor Sub Bus Line Connector (J43) From D-CAN J/C B Side 
(W/O Earth Terminal) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
a. Disconnect the steering sensor sub bu

Page 1347 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 138: Identifying DLC3 Connector terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Measure the resistance according to the value (s) in the table below.  
Standard:  
DLC3 CONNECTOR TERM

Page 1348 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 139: Disconnecting CAN Main Bus Line Connector (J37) From D-CAN J/C A Side (W/Earth 
Terminal) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
a. Disconnect the CAN main bus line connector (J37) f

Page 1349 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 140: Identifying DLC3 Connector terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Measure the resistance according to the value (s) in the table below.  
Standard:  
DLC3 CONNECTOR TERM

Page 1350 of 4500

LEXUS LS430 2003  Factory Repair Manual 17.CHECK CAN BUS LINES FOR SHORT CIRCUIT (SUSPENSION CONTROL ECU SUB BUS 
LINE) 
Fig. 141: Identifying DLC3 Connector terminals
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
a. Disconnect the suspen

Page 1351 of 4500

LEXUS LS430 2003  Factory Repair Manual 18.CONNECT CONNECTOR 
a. Reconnect the gateway ECU sub bus line connector (J36) to the D-CAN J/C A side (w/earth 
terminal).  
19.CHECK CAN BUS LINES FOR SHORT CIRCUIT (GATEWAY ECU SUB BUS LINE) 
Fig.

Page 1352 of 4500

LEXUS LS430 2003  Factory Repair Manual NG: REPAIR OR REPLACE GATEWAY ECU SUB BUS LINE OR CONNECTOR (CAN-H, 
CAN-L)  
20.CONNECT CONNECTOR 
a. Reconnect the ECM sub bus line connector (J40) to the D-CAN J/C B side (w/o earth terminal).  
21