DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2018 - 08/2020]: Procedure

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
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

CHECK DTC OUTPUT (DTC U1103-87)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Powertrain > Engine > Trouble Codes

Read the DTCs using the Techstream.

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 [11/2018 - 08/2020]

Result:

B

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]