DTC U1002 Lost Communication with Gateway Module: Description
If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open. (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open.)
PROBLEM SYMPTOM CHART
| DTC Code |
Symptom |
Trouble Area |
| U1002 |
Lost communication with gateway module (main body ECU) |
- MS bus circuit
- Main body ECU branch wire or connector
- No. 1 meter ECU branch wire or connector
- Certification ECU branch wire or connector
- Front multiplex network door ECU LH branch wire or connector
- Front multiplex network door ECU RH branch wire or connector
- Rear multiplex network door ECU RH branch wire or connector
- Rear multiplex network door ECU LH branch wire or connector
- Front power seat ECU and switch LH branch wire or connector
- Front power seat ECU and switch RH branch wire or connector
- Rear power seat module switch branch wire or connector
- Outer mirror switch branch wire or connector
- Combination switch branch wire or connector
- Multiplex tilt and telescopic ECU branch wire or connector
- Steering pad ECU branch wire or connector
- Driving support ECU branch wire or connector
- Power trunk lid control ECU branch wire or connector
- Tire pressure warning ECU branch wire or connector
- Bus buffer ECU branch wire or connector
- Front controller main wire or connector
- Rear junction block ECU main wire or connector
- Front controller
- Rear junction block ECU
- Main body ECU
- No. 1 meter ECU sub-assembly
- Certification ECU
- Front multiplex network door ECU LH
- Front multiplex network door ECU RH
- Rear multiplex network door ECU RH
- Rear multiplex network door ECU LH
- Front power seat ECU and switch LH
- Front power seat ECU and switch RH*1
- Rear power seat module switch*2, *3
- Outer mirror switch
- Combination switch assembly (windshield wiper switch assembly)
- Multiplex tilt and telescopic ECU
- Steering pad ECU
- Spiral cable sub-assembly
- Driving support ECU*4
- Power trunk lid control ECU*5
- Tire pressure warning ECU
- Bus buffer ECU*6
- No. 8 junction connector
- No. 9 junction connector
- No. 10 junction connector
- No. 11 junction connector
- No. 12 junction connector
|
HINT:
*1: w/ Rear Power Seat Control System
*2: w/ Rear Power Seat Control System or Seat Heater System
*3: w/ Rear Power Seat Control System (w/ Ottoman)
*4: w/ Dynamic Radar Cruise Control System or Pre-collision System
*5: w/ Power Trunk Lid System
*6: w/ LEXUS Link System |