DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [12/2024 - ]: Procedure

1. Clear the DTCs.

   Powertrain > Stop and Start > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

Pre-procedure1

• Turn the ignition switch off and wait for 30 seconds or more.
• Start the engine.
• Perform a road test.

• Read the DTCs.

  Powertrain > Stop and Start > Trouble Codes 

  Result

  Result	Proceed to
  U0100-87, U0101-87, U0114-87, U0129-87, U0140-87, U0151-87, U0155-87, U0164-87, U115C-87 or U1170-87 is output	A
  U0100-87, U0101-87, U0114-87, U0129-87, U0140-87, U0151-87, U0155-87, U0164-87, U115C-87 or U1170-87 is not output	B

Post-procedure1

• None.

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2024 - ]

Result: 

B 

USE SIMULATION METHOD TO CHECK 

Refer to HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS