DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [12/2017 - 10/2020]: Procedure

1. Check for electronically controlled brake system DTCs.

   w/o Vacuum Brake Booster:

   Refer to DTC CHECK / CLEAR [12/2017 - 10/2023]

   w/ Vacuum Brake Booster:

   Refer to DTC CHECK / CLEAR [12/2017 - 09/2018] , or refer to DTC CHECK / CLEAR [09/2018 - 10/2023]

   OK

   DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM 

w/o Vacuum Brake Booster:

Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2017 - 10/2020]

w/ Vacuum Brake Booster:

Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2017 - 09/2018] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2018 - 10/2020]

Result: 

OK 

See step  2

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

   OK

   CAN communication system is functioning normally.

   HINT: 

   Refer to CAN Bus Check in CAN Communication System.

   Refer to DIAGNOSIS SYSTEM [12/2017 - 09/2018] , or refer to DIAGNOSIS SYSTEM [09/2018 - 09/2019] , or refer to DIAGNOSIS SYSTEM [09/2019 - 10/2020]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] 

Result: 

OK 

See step  3

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) 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 [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] 

Result: 

NG 

GO TO OTHER DIAGNOSTIC TROUBLE CODE CHART