DTC U0129-87: Lost Communication With Brake System Control Module Missing Message [06/2021 - 09/2022]: Procedure

1. Clear the DTCs.

   Powertrain > Transmission > Clear DTCs 

   HINT: 

   Write down the currently output DTCs before clearing them.

2. Start the engine and drive the vehicle at a low speed.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Transmission / Trouble Codes.

   Powertrain > Transmission > Trouble Codes 

5. Read the DTCs using the Techstream.

   Result

   Result	Proceed to
   DTC U0129-87 is not output	A
   DTC U0129-87 is output	B

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [06/2018 - 09/2024] 

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSIS SYSTEM [04/2020 - 09/2022]