DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [11/2018 - 02/2019]: Procedure

1. Check for electronically controlled brake system DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - ]

   Chassis > Brake/EPB > Trouble Codes 

   OK

   DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 10/2019] 

Result: 

OK 

See step  2

1. Using the Techstream, check if the CAN communication system is functioning normally.

   HINT: 

   Refer to CAN Bus Check in CAN Communication System.

   Refer to DIAGNOSIS SYSTEM [11/2018 - 02/2019]

   OK

   CAN communication system is functioning normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

OK 

See step  3

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON and turn the Techstream on.
4. Enter the following menus: System Select / Health Check.

   OK

   DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

NG 

GO TO OTHER DIAGNOSTIC TROUBLE CODE CHART