DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross and 2024 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- CLEAR DTC
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and wait for at least 30 seconds.
Result
Proceed to NEXT
Result:
NEXT
See step 2
- Clear the DTCs.
- CHECK DTC OUTPUT (DTC U1103-87)
- Enter the following menus.
Powertrain > Engine > Trouble Codes
- Read the DTCs using the GTS.
Result
Result Proceed to DTC U1103-87 is not output A DTC U1103-87 is output B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS
Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2023 - ]
Result:
B
GO TO CAN COMMUNICATION SYSTEM
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - 12/2024] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2024 - ]
- Enter the following menus.