DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message [12/2021 - ]: Procedure

Pre-procedure1

1. Turn the ignition switch to ON.

   Procedure1

2. Clear the DTCs.

   Powertrain > Four Wheel Drive > Clear DTCs 

   Result

   Proceed to
   NEXT

   Post-procedure1

3. Turn the ignition switch off.

Result: 

NEXT 

See step  2

Pre-procedure1

1. Turn the ignition switch to ON.

   Procedure1

2. Check for DTCs.

   Powertrain > Four Wheel Drive > Trouble Codes 

   Result

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

   Post-procedure1

3. Turn the ignition switch off.

Result: 

A 

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

Result: 

B 

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