DTC C1B11: Short in Motor Circuit; DTC C1B12: Open in Motor Circuit [12/2017 - 10/2023]: Procedure

1. Turn the engine switch off.
2. Disconnect the z19 rear steering link assembly connector from the DRS ECU (rear steering control ECU).
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   z19-1 (V) - z19-3 (W)	Always	Below 1 Ω
   z19-2 (U) - z19-1 (V)	Always	Below 1 Ω
   z19-3 (W) - z19-2 (U)	Always	Below 1 Ω
   z19-1 (V) - Body ground	Always	100 kΩ or higher
   z19-2 (U) - Body ground	Always	100 kΩ or higher
   z19-3 (W) - Body ground	Always	100 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DRS ECU (REAR STEERING CONTROL ECU). Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

NG 

REPLACE REAR STEERING LINK ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]