DTC C1B13: Motor Rotation Angle Not Detected [12/2017 - 10/2023]: Procedure

1. Check for DTCs.

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

   Chassis > DRS > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1B13 is output as a past DTC	A
   DTC C1B13 is output as a current DTC	B

Result: 

B 

See step  4

Result: 

A 

See step  2

1. Perform actuator forced activation.

   Refer to ON-VEHICLE INSPECTION [12/2017 - 10/2023] 

   Chassis > DRS > Utility 

   Tester Display
   Activate Rear Steering Motor

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

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

   Chassis > DRS > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1B13 is output as a current DTC	A
   DTC C1B13 is output as a past DTC	B

Result: 

B 

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]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] 

Result: 

A 

See step  4

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Display the DTCs on the Techstream screen.

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

   Chassis > DRS > Trouble Codes 

6. Select DTC "C1B13", and check the freeze frame data for "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset".

   Refer to FREEZE FRAME DATA [12/2017 - 10/2023]

   Result

   Result	Proceed to
   "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are 5 V or higher	A
   "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are below 5 V	B

Result: 

B 

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: 

A 

See step  5

1. Turn the engine switch off.
2. Disconnect the z20 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
   z20-3 (MRV) - z20-2 (MRG)	Always	26 to 64 Ω
   z20-8 (MS1) - z20-2 (MRG)	Always	92 to 230 Ω
   z20-7 (MS2) - z20-2 (MRG)	Always	98 to 247 Ω
   z20-3 (MRV) - z20-8 (MS1)	Always	118 to 294 Ω
   z20-3 (MRV) - z20-7 (MS2)	Always	124 to 311 Ω
   z20-8 (MS1) - z20-7 (MS2)	Always	190 to 477 Ω
   z20-3 (MRV) - Body ground	Always	100 kΩ or higher
   z20-2 (MRG) - Body ground	Always	100 kΩ or higher
   z20-8 (MS1) - Body ground	Always	100 kΩ or higher
   z20-7 (MS2) - 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]