DTC U0122: Lost Communication With Vehicle Dynamics Control Module [10/2014 - 09/2017]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Powertrain > Cruise Control > Clear DTCs 

2. Perform the following to make sure that the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the malfunction cannot be detected.

   1. Drive the vehicle at a speed for which cruise control operation is possible.
   2. Turn the cruise control system on using the cruise control main switch (ON/OFF).
   3. Push the cruise control main switch to -SET to begin control of vehicle speed using the cruise control system.
3. Check the DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Powertrain > Cruise Control > Trouble Codes 

   Result

   Result	Proceed to
   CAN communication system DTCs are not output	A
   CAN communication system DTCs are output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 09/2017] 

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 09/2017]