DTC U0122: Lost Communication With Vehicle Dynamics Control Module [08/2017 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [08/2017 - 08/2019] , or refer to DTC CHECK / CLEAR [08/2019 - ]

2. Make sure that the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the system cannot detect the malfunction.

   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 button).
   3. Push the cruise control main switch to -SET to begin control of vehicle speed using the cruise control system.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2017 - 08/2019] , or refer to DTC CHECK / CLEAR [08/2019 - ]

   Result

   Result	Proceed to
   DTC U0122 is not output	A
   DTC U0122 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]