2003 LEXUS LS430 Identifying ac

a. Reconnect the steering sensor sub bus line connector (J43) to the D-CAN J/C B side (w/o earth
terminal).
25.CHECK CAN BUS LINE FOR SHORT TO GND (STEERING SENSOR SUB BUS LINE)
Fig. 236: Identifying DLC3 Connector terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the steering sensor connector (S16).
b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
OK: REPLACE STEERING SENSOR (SEE REPLACEMENT
)
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-4 (CG)Ignition Switch OFF1 kohms or more
D1-14 (CANL) - D1-4 (CG)Ignition Switch OFF1 kohms or more

a. Disconnect the CAN main bus line connector (J49) from the LUG-CAN J/C A side (w/earth
terminal).
Fig. 238: 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 TERMINALS RESISTANCE
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-4 (CG)Ignition Switch OFF1 kohms or more
D1-14 (CANL) - D1-4 (CG)Ignition Switch OFF1 kohms or more

OK: Go to step 38
NG: GO TO NEXT STEP
28.CONNECT CONNECTOR
a. Reconnect the CAN main bus line connector (J49) to the LUG-CAN J/C A side (w/earth terminal).
29.CHECK CAN BUS LINE FOR SHORT TO GND (DISTANCE CONTROL ECU SUB BUS LINE)
Fig. 239: Identifying Distance Control ECU Sub Bus Line Connector (J48)

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

a. Disconnect the distance control ECU sub bus line connector (J48) from the P-CAN J/C B side (w/o
earth terminal).
Fig. 240: 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 TERMINALS RESISTANCE
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-4 (CG)Ignition Switch OFF1 kohms or more
D1-14 (CANL) - D1-4 (CG)Ignition Switch OFF1 kohms or more

a. Disconnect the yaw rate sensor sub bus line connector (J44) from the P-CAN J/C A side (w/earth
terminal).
Fig. 242: 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 TERMINALS RESISTANCE
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-4 (CG)Ignition Switch OFF1 kohms or more
D1-14 (CANL) - D1-4 (CG)Ignition Switch OFF1 kohms or more

OK: Go to step 36
NG: GO TO NEXT STEP
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 LINE FOR SHORT TO GND (P-CAN J/C - LUG-CAN J/C)
Fig. 243: Identifying CAN Main Bus Line Connector (J47)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the CAN main bus line connector (J47) from the P-CAN J/C B side (w/o earth

terminal).
Fig. 244: 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 TERMINALS RESISTANCE
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-4 (CG)Ignition Switch OFF1 kohms or more
D1-14 (CANL) - D1-4 (CG)Ignition Switch OFF1 kohms or more

NG: REPLACE JUNCTION CONNECTOR (P-CAN J/C)
OK: REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN-H, CAN-L)
34.CONNECT CONNECTOR
a. Reconnect the distance control ECU sub bus line connector (J48) to the P-CAN J/C B side (w/earth
terminal).
35.CHECK CAN BUS LINE FOR SHORT TO GND (DISTANCE CONTROL ECU SUB BUS LINE)
Fig. 245: Identifying DLC3 Connector terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the distance control ECU connector (D2).
b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE