2003 LEXUS LS430 sensor

c. SUSPENSION CONTROL ECU
HINT:
DTC communication uses the SIL line.
SUSPENSION CONTROL ECU DIAGNOSTIC TROUBLE CODE CHART
d. TELEVISION CAMERA ECU
HINT:
The television camera ECU is connected to the CAN communication system but CAN
communication system DTCs are not output.
e. GATEWAY ECU
HINT:
The gateway ECU is connected to the CAN communication system but CAN communication
system DTCs are not output.
f. SEAT BELT CONTROL ECU
HINT:
DTC communication uses the SIL line.
SEAT BELT CONTROL ECU DIAGNOSTIC TROUBLE CODE CHART
U0100Lost Communication With ECM/PCM "A"
U0123Lost Communication With Yaw Rate Sensor Module
U0124Lost Communication With Lateral Acceleration Sensor Module
U0126Lost Communication With Steering Angle Sensor Module
DTC No.Detection Item
U0100Lost Communication With ECM/PCM "A"
U0101Lost Communication With TCM
U0122Lost Communication With Vehicle Dynamics Control Module
U0124Lost Communication With Lateral Acceleration Sensor Module
U0126Lost Communication With Steering Angle Sensor Module
U0132Lost Communication With Ride Level Control Module
DTC No.Detection Item
U0100Lost Communication With ECM/PCM "A"
U0122Lost Communication With Vehicle Dynamics Control Module

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 of TOYOTA MOTOR SALES, U.S.A., INC.

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.

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 SENSOR CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE STEERING SENSOR SUB BUS LINE OR CONNECTOR (CAN-H,
CAN -L)
OK: GO TO NEXT STEP
2.CHECK WIRE HARNESS (IG1, ESS)
Tester ConnectionConditionSpecified value
S16-10 (CANH) -S16-9 (CANL)Ignition Switch OFF54 to 69 ohms

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 according to the value (s) in the table below.
Standard:
STEERING SENSOR CONNECTOR TERMINALS RESISTANCE AND VOLTAGE
Tester ConnectionConditionSpecified condition
S16-2 (ESS) - Body groundAlwaysBelow 1 ohms
S16-1 (IG1) - Body groundIgnition Switch ON10 to 14 V

NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
OK: REPLACE STEERING SENSOR (SEE REPLACEMENT )
MODE DESCRIPTION
Fig. 44: Problem Symptom Diagnostic Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAM

Fig. 45: Wiring Diagram - Yaw Rate Sensor Communication Stop Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.CHECK CAN BUS LINE FOR DISCONNECTION (YAW RATE SENSOR SUB BUS LINE)

Fig. 46: Identifying Yaw Rate Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the yaw rate sensor connector (Y1).
c. Measure the resistance according to the value (s) in the table below.
Standard:
YAW RATE SENSOR CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H,
CAN-L)
OK: GO TO NEXT STEP
2.CHECK WIRE HARNESS (IG, GND)
Tester connectionConditionSpecified value
Y1-2 (CANL) - Y1-3 (CANH)Ignition Switch OFF54 to 69 ohms