LEXUS LS430 2003 Factory Repair Manual

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 LINES FOR SHORT CIRCUIT (P-CAN J/C - LUG-CAN J/C)
Fig. 113: Disconnecting CAN Main Bus Line Connector (J47) From P
-CAN J/C B Side (W/O Earth
Terminal)
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

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. 114: 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

NG: REPLACE JUNCTION CONNECTOR (P-CAN J/C)
OK: GO TO NEXT STEP
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 LINES FOR SHORT CIRCUIT (DISTANCE CONTROL ECU SUB BUS
LINE)
Fig. 115: Identifying DLC3 Connector terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the distance control ECU connector (D2).
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF108 to 132 ohms

b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
OK: REPLACE DISTANCE CONTROL ECU ASSY (SEE REPLACEMENT
)
NG: REPAIR OR REPLACE DISTANCE CONTROL ECU SUB BUS LINE OR CONNECTOR
(CAN-H, CAN-L)
36.CONNECT CONNECTOR
a. Reconnect the yaw rate sensor sub bus line connector (J44) to the P-CAN J/C A side (w/earth
terminal).
37.CHECK CAN BUS LINES FOR SHORT CIRCUIT (YAW RATE SENSOR SUB BUS LINE)
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 116: Identifying DLC3 Connector terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the yaw rate sensor connector (Y1).
b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
OK: REPLACE YAW RATE SENSOR (SEE REPLACEMENT
)
NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H,
CAN-L)
38.CONNECT CONNECTOR
a. Reconnect the CAN main bus line connector (J49) to the LUG-CAN J/C A side (w/earth terminal).
39.CHECK CAN BUS LINES FOR SHORT CIRCUIT (TELEVISION CAMERA ECU)
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 117: Disconnecting Television Camera ECU Sub Bus Line Connector (J50) From LUG-CAN
J/C A Side (W/Earth Terminal)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the television camera ECU sub bus line connector (J50) from the LUG-CAN J/C A side
(w/earth terminal).

Fig. 118: 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
NG: REPLACE JUNCTION CONNECTOR (w/o Pre-collision safety system)
NG: Go to step 42 (w/ Pre-collision safety system)
OK: GO TO NEXT STEP
40.CONNECT CONNECTOR
a. Reconnect the television camera ECU sub bus line connector (J50) to the LUG-CAN J/C A side
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

(w/earth terminal).
41.CHECK CAN BUS LINES FOR SHORT CIRCUIT (TELEVISION CAMERA ECU SUB BUS
LINE)
Fig. 119: Identifying DLC3 Connector terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Disconnect the television camera ECU connector (T24).
b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
OK: REPLACE TELEVISION CAMERA ECU (SEE REPLACEMENT
)
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

NG: REPAIR OR REPLACE TELEVISION CAMERA ECU SUB BUS LINE OR CONNECTOR
(CAN-H, CAN-L)
42.CONNECT CONNECTOR
a. Reconnect the television camera ECU connector (T24).
43.CHECK CAN BUS LINES FOR SHORT (LUG-CAN J/C)
Fig. 120: Disconnecting Television Camera ECU Sub Bus Line Connector (J52) From LUG
-CAN
J/C A Side (W/Earth Terminal)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the television camera ECU sub bus line connector (J52) from the LUG-CAN J/C A side
(w/earth terminal).
Fig. 121: 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
NG: REPLACE JUNCTION CONNECTOR
OK: GO TO NEXT STEP
44.CONNECT CONNECTOR
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms