2003 LEXUS LS430 Factory Repair Manual

Page 609 of 4500

LEXUS LS430 2003  Factory Repair Manual b. Turn the ignition switch to the ON position and turn the hand-held tester main switch on.  
c. Select the item below in the DATA LIST and read its value displayed on the hand-held tester. 
AIR SUS:

Page 610 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 126: Identifying Steering Sensor S16 Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
OK: REPLACE STEERING SENSOR (SEE REPLACEMENT
 )  
CIRCUIT DESCRIPTION 
The height control s

Page 611 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 127: DTC C1786 Detecting Condition And Trouble Area 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
HINT: 
DTC C1786 is output only in the test mode. 
WIRING DIAGRAM 
Fig. 128: Height Control Swit

Page 612 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 129: Data List Value - Air sus
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
d. Check that the value displayed on the hand-held tester changes by pressing the height control 
switch "HIGH"

Page 613 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 130: Identifying Height Control Switch Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
3.CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - HEIGHT 
CONTROL SWITCH) (SEE ELEC

Page 614 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 131: Identifying Suspension Control ECU Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Page 615 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 132: Identifying Height Control Switch Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK:Go to next step  
4.CHECK HARNESS AND CON

Page 616 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 133: Identifying Height Control Switch Connector Terminals 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR  
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPL