2003 LEXUS LS430 Identifying condition

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

Fig. 77: 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).
b. Measure the resistance according to the value (s) in the table below.
Standard:
CAN MAIN BUS LINE CONNECTOR TERMINALS RESISTANCE
OK: REPLACE JUNCTION CONNECTOR (P-CAN J/C)
NG: GO TO NEXT STEP
7.CONNECT CONNECTOR
a. Reconnect the CAN main bus line (J47) to the P-CAN J/C B side (w/o earth terminal).
8.CHECK CAN MAIN BUS LINE FOR DISCONNECTION (LUG-CAN J/C)
Tester connectionConditionSpecified value
J47-1 (CANH) - J47-2 (CANL)Ignition Switch OFF108 to 132 ohms

Fig. 81: 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 OFF132ohmsor moreB

Fig. 87: Identifying DLC3 Connector terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
NG: REPAIR OR REPLACE DLC3 SUB BUS LINE OR CONNECTOR (CAN-H, CANL)
OK: GO TO NEXT STEP
2.CONNECT CONNECTOR
a. Reconnect the DLC3 sub bus line connector (J42) to the D-CAN J/C B side (w/o earth terminal).
3.CHECK CAN BUS LINES FOR SHORT CIRCUIT (CAN BUSES TO D-CAN J/C)
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF1 Mohms or more

Fig. 89: 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
OK: Go to step 26
NG: GO TO NEXT STEP
4.CONNECT CONNECTOR
a. Reconnect the CAN main bus line connector (J45) to the P-CAN J/C A side (w/earth terminal).
5.CHECK CAN BUS LINES FOR SHORT CIRCUIT (SUSPENSION CONTROL ECU SUB BUS
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF108 to 132 ohms

Fig. 91: 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
OK: Go to step 16
NG: GO TO NEXT STEP
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 93: 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
OK: Go to step 18
NG: GO TO NEXT STEP
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms

Fig. 95: 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
OK: Go to step 20
NG: GO TO NEXT STEP
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms