DTC U1104-87: Lost Communication with Driving Support ECU Missing Message [09/2015 - 12/2017]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: System Select / Health Check.
5. Read the DTCs.

   Result

   Result	Proceed to
   DTC U1104-87 is output	A
   DTC U1104-87 and other DTCs are output	B

   HINT: 

   If any DTCs other than U1104-87 are output, troubleshoot those DTCs first.

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result: 

B 

GO TO DTC CHART