2003 LEXUS LS430 Identifying condition

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a. Disconnect the distance control ECU sub bus line connector (J48) from the P-CAN J/C B side (w/o
earth terminal).
Fig. 110: Identifying DLC3 Connector terminals

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b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
Tester connectionConditionSpecified value

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a. Disconnect the yaw rate sensor sub bus line connector (J44) from the P-CAN J/C A side (w/earth
terminal).
Fig. 112: Identifying DLC3 Connector terminals

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b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
Tester connectionConditionSpecified value

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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

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b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
Tester connectionConditionSpecified value

Fig. 116: Identifying DLC3 Connector terminals
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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. 118: Identifying DLC3 Connector terminals
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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

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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

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

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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

a. Reconnect the television camera ECU sub bus line connector (J52) to the LUG-CAN J/C A side
(w/earth terminal).
45.CHECK CAN BUS LINES FOR SHORT (SEAT BELT CONTROL ECU SUB BUS LINE)
Fig. 122: Identifying DLC3 Connector terminals

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a. Disconnect the seat belt control ECU connector (S63).
b. Measure the resistance according to the value (s) in the table below.
Standard:
DLC3 CONNECTOR TERMINALS RESISTANCE
NG: REPLACE SEAT BELT CONTROL ECU
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-14 (CANL)Ignition Switch OFF54 to 69 ohms