2003 LEXUS LS430 lock

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

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57005200550003000b00270015000c[
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the distance control ECU connector (D2).
c. Measure the resistance accordin
g to the value (s) in the table below.

Fig. 54: Disconnecting Television Camera ECU Connector (T24)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the television camera ECU connector (T24).
c. Measure the resistance according to the value (s) in the table below.
Standard:
TELEVISION CAMERA ECU CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE TELEVISION CAMERA ECU SUB BUS LINE OR CONNECTOR
(CAN-H, CAN-L)
OK: GO TO NEXT STEP
2.CHECK WIRE HARNESS (IG, +B, ACC, GND1)
Tester connectionConditionSpecified value
T24-8 (CANH) - T24-7 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 57: Wiring Diagram - ECM Communication Stop Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.CHECK CAN BUS LINE FOR DISCONNECTION (ECM SUB BUS LINE)
Fig. 58: Disconnecting ECM Connector (E3)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the ECM connector (E3).
c. Measure the resistance according to the value (s) in the table below.
Standard:
ECM CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE ECM SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
Tester connectionConditionSpecified value
E3-25 (CANH) - E3-24 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 62: Disconnecting Gateway ECU Connector (G3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the gateway ECU connector (G3).
c. Measure the resistance according to the value (s) in the table below.
Standard:
GATEWAY ECU CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE GATEWAY ECU SUB BUS LINE OR CONNECTOR (CAN-H,
CAN-L)
OK: GO TO NEXT STEP
2.CHECK WIRE HARNESS (BATT, ACC, IG, CG, GND)
Tester connectionConditionSpecified value
G3-17 (CA1H) - G3-18 (CA1L)Ignition Switch OFF54 to 69 ohms

Fig. 66: Disconnecting Suspension Control ECU Connector (A20)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the suspension control ECU connector (A20).
c. Measure the resistance according to the value (s) in the table below.
Standard:
SUSPENSION CONTROL ECU CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE SUSPENSION CONTROL ECU SUB BUS LINE OR CONNECTOR
(CAN-H, CAN-L)
OK: GO TO NEXT STEP
2.CHECK WIRE HARNESS (B, GND)
Tester connectionConditionSpecified value
A20-7 (CANH) - A20-8 (CANL)Ignition Switch OFF54 to 69 ohms

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.CHECK CAN BUS LINE FOR DISCONNECTION (SEAT BELT CONTROL ECU SUB BUS
LINE)
Fig. 70: Disconnecting Seat Belt Control ECU Connector (S63)

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the seat belt control ECU connector (S63).
c. Measure the resistance according to the value (s) in the table below.
Standard:
SEAT BELT CONTROL ECU CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE SEAT BELT CONTROL ECU SUB BUS LINE OR CONNECTOR
Tester connectionConditionSpecified value
S63-4 (CANH) - S63-6 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 74: Identifying DLC3 Connector terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Measure the resistance according to the value (s) in the table below.
Result:
DLC3 CONNECTOR TERMINALS RESISTANCE
Tester connectionConditionSpecified valueResult
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF108 to 132 ohmsA
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF132ohms or moreB