2003 LEXUS LS430 Factory Repair Manual

Page 1361 of 4500

LEXUS LS430 2003  Factory Repair Manual 32.CONNECT CONNECTOR 
a. Reconnect the yaw rate sensor sub bus line connector (J44) to the P-CAN J/C A side (w/earth 
terminal).  
33.CHECK CAN BUS LINES FOR SHORT CIRCUIT (YAW RATE SENSOR SUB BUS LIN

Page 1362 of 4500

LEXUS LS430 2003  Factory Repair Manual NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, 
CAN-L)  
CIRCUIT DESCRIPTION 
There may be a short circuit between the CAN bus line and +B when there is resistance between ter

Page 1363 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 153: Wiring Diagram - CAN Bus Line For Short To +B (W/ LEXUS Navigation System) (1 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 1364 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 154: Wiring Diagram - CAN Bus Line For Short To +B (W/ LEXUS Navigation System) (2 Of 2) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.CHECK CAN BUS LINE FOR SHORT TO +B

Page 1365 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 155: Disconnecting DLC3 Sub Bus Line Connector (J42) From D-CAN J/C B Side (W/O Earth 
Terminal) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
a. Turn the ignition switch to the LOCK position.

Page 1366 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 156: Identifying DLC3 Connector terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
c. Measure the resistance according to the value (s) in the table below.  
Standard:  
DLC3 CONNECTOR TERM

Page 1367 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 157: Disconnecting CAN Main Bus Line Connector (J45) From P-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 (J45) f

Page 1368 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 158: 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