DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM 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; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0168-87: Lost Communication with Vehicle Security Control Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message; DTC U114F-87: Lost Communication with Power Integration Module Missing Message [02/2024 - ]: Procedure

1. Clear the DTCs.

   Body Electrical > Back Door > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Turn the ignition switch to ON and wait for at least 10 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

   Body Electrical > Back Door > Trouble Codes 

   Result

   Result	Proceed to
   U0100-87, U0101-87, U0129-87, U0140-87, U0155-87, U0163-87, U0168-87, U1117-87 or U114F-87 is output	A
   U0100-87, U0101-87, U0129-87, U0140-87, U0155-87, U0163-87, U0168-87, U1117-87 and U114F-87 are not output	B
   None of the above conditions are met	C

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2024 - ]

Result: 

B 

USE SIMULATION METHOD TO CHECK 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2024 - ]

Result: 

C 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [02/2024 - ]