2003 LEXUS LS430 Diagram AC

Fig. 153: Wiring Diagram - CAN Bus Line For Short To +B (W/ LEXUS Navigation System) (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 154: Wiring Diagram - CAN Bus Line For Short To +B (W/ 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)

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

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.

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)

CIRCUIT DESCRIPTION
There may be a short circuit between the CAN bus line and GND when there is resistance between terminals 6
(CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3.
Fig. 213: Problem Symptom Diagnostic Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAM

Fig. 214: Wiring Diagram - CAN Bus Line For Short To GND (W/ LEXUS Navigation System) (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 215: Wiring Diagram - CAN Bus Line For Short To GND (W/ 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 GND (DLC3 SUB BUS LINE)