DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [12/2021 - ]: Procedure

1. Clear the DTCs.

   Body Electrical > Road Sign Assist > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

Pre-procedure1

1. Make sure that the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the system cannot detect the malfunction.

   Procedure1

2. Check for DTCs.

   Body Electrical > Road Sign Assist > Trouble Codes 

   Result

   Result	Proceed to
   CAN DTCs are not output	A
   CAN DTCs are output	B

   Post-procedure1

3. None

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ] 

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ]