Page 1393 of 4500
NG: REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H,
CAN-L)
34.CONNECT CONNECTOR
a. Reconnect the CAN main bus line connector (J49) to the LUG-CAN J/C A side (w/earth terminal).
35.CHECK CAN BUS LINE FOR SHORT TO +B (TELEVISION CAMERA ECU)
Fig. 182: 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
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
D1-14 (CANL) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
Page 1394 of 4500
NG: REPAIR OR REPLACE TELEVISION CAMERA ECU SUB BUS LINE OR CONNECTOR
(w/o Pre-collision safety system)
NG: Go to step 36 (w/ Pre-collision safety system)
OK: REPLACE TELEVISION CAMERA ECU
36.CONNECT CONNECTOR
a. Reconnect the television camera ECU connector (T24).
37.CHECK CAN BUS LINE FOR SHORT TO +B (TELEVISION CAMERA ECU SUB BUS LINE)
Page 1395 of 4500
Fig. 183: 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. 184: 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: REPAIR OR REPLACE TELEVISION CAMERA ECU SUB BUS LINE OR CONNECTOR
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
D1-14 (CANL) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
Page 1396 of 4500
NG: GO TO NEXT STEP
38.CONNECT CONNECTOR
a. Reconnect the television camera ECU sub bus line connector (J52) to the LUG-CAN J/C A side
(w/earth terminal).
39.CHECK CAN BUS LINE FOR SHORT TO +B (SEAT BELT CONTROL ECU SUB BUS LINE)
Fig. 185: Identifying DLC3 Connector terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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
Tester connectionConditionSpecified value
D1-6 (CANH) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
D1-14 (CANL) - D1-16 (BAT)Ignition Switch OFF1 Mohms or more
Page 1397 of 4500
NG: REPAIR OR REPLACE SEAT BELT CONTROL ECU SUB BUS LINE OR CONNECTOR
OK: REPLACE SEAT BELT CONTROL ECU
CIRCUIT DESCRIPTION
There may be a short circuit between the CAN bus line and +B when there is resistance between terminals 6
(CANH) and 16 (BAT) or terminals 14 (CANL) and 16 (BAT) of the DLC3.
Fig. 186: Problem Symptom Diagnostic Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAM
Page 1398 of 4500
Fig. 187: Wiring Diagram - CAN Bus Line For Short To +B (W/O LEXUS Navigation System) (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Page 1399 of 4500
Fig. 188: Wiring Diagram - CAN Bus Line For Short To +B (W/O LEXUS Navigation System) (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.CHECK CAN BUS LINE FOR SHORT TO +B (DLC3 SUB BUS LINE)
Page 1400 of 4500
Fig. 189: Identifying DLC3 Sub Bus Line Connector (J42)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Turn the ignition switch to the LOCK position.
b. Disconnect the DLC3 sub bus line connector (J42) from the D-CAN J/C B side (w/o earth
terminal).