2003 LEXUS LS430 Factory Repair Manual

Page 1241 of 4500

LEXUS LS430 2003  Factory Repair Manual NG-B: CHECK CAN BUS LINE FOR SHORT TO GND (W/ LEXUS NAVIGATION SYSTEM)
OK: HOW TO PROCEED WITH TROUBLESHOOTING  
MODE DESCRIPTION 
Fig. 36: Problem Symptom Diagnostic Chart
 
Courtesy of TOYOTA MOTOR

Page 1242 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 37: Wiring Diagram - Skid Control ECU Communication Stop Mode 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
INSPECTION PROCEDURE 
1.CHECK CAN BUS LINE FOR DISCONNECTION (SKID CONTROL ECU SUB BUS

Page 1243 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 38: Check Can Bus Line For Disconnection 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
a. Turn the ignition switch to the LOCK position.  
b. Disconnect the skid control ECU connector (S42).  
c

Page 1244 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 39: Identifying Skid Control ECU Connectors 
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 accord

Page 1245 of 4500

LEXUS LS430 2003  Factory Repair Manual MODE DESCRIPTION 
Fig. 40: Problem Symptom Diagnostic Chart
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
WIRING DIAGRAM 
Fig. 41: Wiring Diagram 
- Steering Sensor Communication Stop Mode 
Courtesy

Page 1246 of 4500

LEXUS LS430 2003  Factory Repair Manual INSPECTION PROCEDURE 
1.CHECK CAN BUS LINE FOR DISCONNECTION (STEERING SENSOR SUB BUS LINE) 
Fig. 42: Disconnecting Steering Sensor Connector (S16)
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 1247 of 4500

LEXUS LS430 2003  Factory Repair Manual a. Turn the ignition switch to the LOCK position.  
b. Disconnect the steering sensor connector (S16).  
c. Measure the resistance according to the value (s) in the table below.  
Standard:  
STEERING

Page 1248 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 43: Disconnecting Steering Sensor Connector (S16) 
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