DTC C050C-23: Left Rear Wheel Speed Sensor Signal Stuck Low; DTC C0512-23: Right Rear Wheel Speed Sensor Signal Stuck Low [11/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
4. Select a DTC to display the Freeze Frame Data.
5. Read the freeze frame data of DTC C050C-23 or C0512-23.

   Chassis > Brake/EPB 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   FR Wheel Speed	Front wheel speed sensor RH reading	Min.: 0.0 km/h (0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations
   FL Wheel Speed	Front wheel speed sensor LH reading	Min.: 0.0 km/h (0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations
   RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0.0 km/h (0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations
   RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0.0 km/h (0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations

   Chassis > Brake/EPB > DTC(C050C-23) > Freeze Frame Data 

   Tester Display
   FR Wheel Speed
   FL Wheel Speed
   RR Wheel Speed
   RL Wheel Speed

   Chassis > Brake/EPB > DTC(C0512-23) > Freeze Frame Data 

   Tester Display
   FR Wheel Speed
   FL Wheel Speed
   RR Wheel Speed
   RL Wheel Speed

   Result

   Result	Proceed to
   The value of RL Wheel Speed is 2 km/h (1 mph) or less when all other values are 12 km/h (7 mph) or more.	A
   The value of RR Wheel Speed is 2 km/h (1 mph) or less when all other values are 12 km/h (7 mph) or more.
   The value of RL Wheel Speed is 2 km/h (1 mph) or less when all other values are 43 km/h (27 mph) or more.	B
   The value of RR Wheel Speed is 2 km/h (1 mph) or less when all other values are 43 km/h (27 mph) or more.

Result: 

B 

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY. Refer to  REMOVAL [11/2018 - 02/2019]  , or refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Chassis / Brake/EPB / Data List.

   Chassis > Brake/EPB > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   RR Wheel Speed	Rear wheel speed sensor RH reading	Min.: 0.0 km/h (0.0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations
   RL Wheel Speed	Rear wheel speed sensor LH reading	Min.: 0.0 km/h (0.0 mph) Max.: 6553.5 km/h (4072 mph)	Vehicle stopped: 0.0 km/h (0.0 mph)	When driving at constant speed: No large fluctuations

   Chassis > Brake/EPB > Data List 

   Tester Display
   RR Wheel Speed
   RL Wheel Speed

4. Start the engine and perform a road test.
5. Check that the value of Wheel Speed changes in accordance with vehicle speed when accelerating from 0 km/h to 20 km/h (0 mph to 12 mph).

   OK

   The value of Wheel Speed changes in accordance with vehicle speed.

   HINT: 

   If the result of the road test is within the specified range, it is possible that this DTC was stored due to a particular situation such as brake drag, wheelspin or wheel lockup.

   Result

   Proceed to
   OK
   NG (for 2WD)
   NG (for AWD)

Result: 

OK 

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

Result: 

NG (for 2WD) 

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY. Refer to  REMOVAL [11/2018 - 02/2019]  , or refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

NG (for AWD) 

See step  3

1. Check the rear speed sensor installation.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front Speed Sensor
   *a	Correct
   *b	Incorrect
   *c	No clearance

   OK

   There is no clearance between the rear speed sensor and the rear axle carrier.

   The installation bolt is tightened properly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR SPEED SENSOR. Refer to  REMOVAL [11/2018 - ] 

Result: 

NG 

REINSTALL OR REPLACE REAR SPEED SENSOR. Refer to  INSTALLATION [11/2018 - 02/2019]  , or refer to  INSTALLATION [02/2019 - ]