DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" 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; DTC U0230-87: Lost Communication with Rear Gate Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [02/2024 - ]: Procedure

1. Check for DTCs and note any DTCs that are output.

   Result

   Result	Proceed to
   U0100-87, U0103-87, U0129-87, U0140-87, U0155-87, U0230-87, U1103-87 or U1117-87 is output	A
   DTCs other than U0100-87, U0103-87, U0129-87, U0140-87, U0155-87, U0230-87, U1103-87 and U1117-87 are output	B

Result: 

B 

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

Result: 

A 

See step  2

1. Clear the DTCs.

   Result

   Proceed to
   NEXT

2. Turn the ignition switch off.

Result: 

NEXT 

See step  3

1. Turn the ignition switch to ON and wait for 10 seconds or more.
2. Check for DTCs and note any DTCs that are output.

   Result

   Result	Proceed to
   U0100-87, U0103-87, U0129-87, U0140-87, U0155-87, U0230-87, U1103-87 or U1117-87 is output	A
   U0100-87, U0103-87, U0129-87, U0140-87, U0155-87, U0230-87, U1103-87 and U1117-87 are not output	B

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

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

Result: 

B 

GO TO CHECK FOR INTERMITTENT PROBLEMS 

Refer to CHECK FOR INTERMITTENT PROBLEMS [02/2024 - ]