Part 3

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1002: Lost Communication with Gateway Module (Parking Assist Bus)
U1002 - Lost Communication with Gateway Module (Parking Assist Bus)

21. CHECK FOR SHORT IN CAN BUS WIRES (DRIVER MONITOR ECU)

(a) Disconnect the L18 driver monitor ECU connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (NO. 13 JUNCTION CONNECTOR - DRIVER MONITOR ECU)

OK -- REPLACE DRIVER MONITOR ECU Removal

22. CONNECT CONNECTOR

(a) Reconnect the L96 No. 13 junction connector connector.

NEXT -- Continue to next step.

23. CHECK FOR SHORT IN CAN BUS WIRES (FRONT MILLIMETER WAVE RADAR SENSOR)

(a) Disconnect the B9 front millimeter wave radar sensor connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (NO. 13 JUNCTION CONNECTOR - FRONT MILLIMETER WAVE RADAR SENSOR)

OK -- REPLACE FRONT MILLIMETER WAVE RADAR SENSOR ASSEMBLY Removal

24. CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU - BATTERY AND GROUND)

(a) Connect the cable to the negative (-) battery terminal.

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

(b) Disconnect the A33 driving support ECU connector.





(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





(d) Measure the voltage according to the value(s) in the table below.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE DRIVING SUPPORT ECU ASSEMBLY Removal