2003 LEXUS LS430 Factory Repair Manual

Page 1305 of 4500

LEXUS LS430 2003  Factory Repair Manual 12.CONNECT CONNECTOR 
a. Reconnect the skid control ECU sub bus line connector (J41) to the D-CAN J/C B side (w/o earth 
terminal).  
13.CHECK CAN BUS LINES FOR SHORT CIRCUIT (STEERING SENSOR SUB BUS

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LEXUS LS430 2003  Factory Repair Manual Fig. 99: 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 TERMI

Page 1307 of 4500

LEXUS LS430 2003  Factory Repair Manual 14.CONNECT CONNECTOR 
a. Reconnect the steering sensor sub bus line connector (J43) to the D-CAN J/C B side (w/o earth 
terminal).  
15.CHECK CAN BUS LINES FOR SHORT CIRCUIT (D-CAN J/C) 
Fig. 100: Dis

Page 1308 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 101: 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 1309 of 4500

LEXUS LS430 2003  Factory Repair Manual J/C)  
16.CONNECT CONNECTOR 
a. Reconnect the suspension control ECU sub bus line connector (J38) to the D-CAN J/C A side 
(w/earth terminal).  
17.CHECK CAN BUS LINES FOR SHORT CIRCUIT (SUSPENSION CO

Page 1310 of 4500

LEXUS LS430 2003  Factory Repair Manual OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT )  
OK: REPAIR OR REPLACE SUSPENSION CONTROL ECU SUB BUS LINE OR 
CONNECTOR (CAN-H, CAN-L)  
18.CONNECT CONNECTOR 
a. Reconnect the gateway ECU sub

Page 1311 of 4500

LEXUS LS430 2003  Factory Repair Manual DLC3 CONNECTOR TERMINALS RESISTANCE
OK: REPLACE GATEWAY ECU  
NG: GO TO NEXT STEP  
REPAIR OR REPLACE GATEWAY ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)  
20.CONNECT CONNECTOR 
a. Reconnect the ECM

Page 1312 of 4500

LEXUS LS430 2003  Factory Repair Manual b. Measure the resistance according to the value (s) in the table below.  
Standard:  
DLC3 CONNECTOR TERMINALS RESISTANCE 
OK: REPLACE ECM (SEE REPLACEMENT
 )  
NG: GO TO NEXT STEP  
REPAIR OR REPLAC