DTC C050C-1F: Left Rear Wheel Speed Sensor Circuit Intermittent [11/2021 - 10/2023]: Procedure

READ VALUE USING GTS (RL WHEEL SPEED AND MOMENTARY INTERRUPTION)

While monitoring the values of the Data List, perform a road test and attempt to reproduce the problem symptoms based on the interview with the customer and the vehicle conditions stored as Freeze Frame Data when the DTC was stored.

Refer to DATA LIST / ACTIVE TEST [11/2021 - 10/2023]

Chassis > Brake/EPB > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
RL Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RL Speed Open	Momentary interruption of rear speed sensor LH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RL Wheel Speed
RL Speed Open

The values change in accordance with the operation of the vehicle and there is no intermittent operation.

NOTE:

Perform the above inspection before removing the sensor and connector.

Result

Proceed to
OK
NG

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]

Result:

See step 2

CHECK REAR SPEED SENSOR LH INSTALLATION

Check the rear speed sensor LH installation.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Correct
*b	Incorrect

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

Result

Proceed to
OK
NG

Result:

INSTALL REAR SPEED SENSOR LH CORRECTLY. Refer to INSTALLATION [11/2021 - 10/2023]

Result:

See step 3

CHECK REAR SPEED SENSOR LH (CHECK FOR FOREIGN MATTER)

Remove the rear speed sensor LH, and confirm that there is no foreign matter, oil or grease on the rear speed sensor tip LH.

The rear speed sensor tip LH is free of oil and foreign matter.

HINT:

If foreign matter of 1 mm (0.03937 in.) x 1 mm (0.03937 in.) or more is adhered to the rear speed sensor LH, this DTC may be stored.

Result

Proceed to
OK
NG

Result:

See step 7

Result:

See step 4

CHECK REAR SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER)

Confirm that there is no foreign matter, oil or grease on the rear speed sensor rotor LH.

The rear speed sensor rotor LH is free of oil and foreign matter.

HINT:

If foreign matter of 1 mm (0.03937 in.) x 1 mm (0.03937 in.) or more is adhered to the rear speed sensor rotor LH, this DTC may be stored.
The rear speed sensor rotor LH is incorporated into the rear axle hub and bearing assembly LH.
If the rear speed sensor rotor LH needs to be replaced, replace it together with the rear axle hub and bearing assembly LH.

Result

Proceed to
OK
NG

Result:

REPLACE REAR SPEED SENSOR LH AND COMPONENT WITH REAR SPEED SENSOR ROTOR LH

for Rear Speed Sensor LH: Refer to REMOVAL [10/2017 - ]

for Rear Speed Sensor Rotor LH: Refer to REMOVAL [11/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]

Result:

See step 5

CLEAN REAR SPEED SENSOR ROTOR LH

Clean the rear speed sensor rotor LH.

NOTE:

Do not use parts cleaner when cleaning the rear speed sensor rotor LH.

Result

Proceed to
NEXT

Result:

See step 6

READ VALUE USING GTS (RL WHEEL SPEED AND MOMENTARY INTERRUPTION)

Refer to DATA LIST / ACTIVE TEST [11/2021 - 10/2023]

Chassis > Brake/EPB > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
RL Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RL Speed Open	Momentary interruption of rear speed sensor LH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RL Wheel Speed
RL Speed Open

The values change in accordance with the operation of the vehicle and there is no intermittent operation.

NOTE:

Perform the above inspection before removing the sensor and connector.

HINT:

The rear speed sensor rotor LH is incorporated into the rear axle hub and bearing assembly LH.

If the rear speed sensor rotor LH needs to be replaced, replace it together with the rear axle hub and bearing assembly LH.

Result

Proceed to
OK
NG

Result:

END

Result:

REPLACE REAR SPEED SENSOR LH AND COMPONENT WITH REAR SPEED SENSOR ROTOR LH

for Rear Speed Sensor LH: Refer to REMOVAL [10/2017 - ]

for Rear Speed Sensor Rotor LH: Refer to REMOVAL [11/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]

CLEAN REAR SPEED SENSOR LH

Clean the rear speed sensor LH.

NOTE:

When cleaning the rear speed sensor LH, make sure to clean the installation hole before installation.

Result

Proceed to
NEXT

Result:

See step 8

READ VALUE USING GTS (RL WHEEL SPEED AND MOMENTARY INTERRUPTION)

Refer to DATA LIST / ACTIVE TEST [11/2021 - 10/2023]

Chassis > Brake/EPB > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
RL Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RL Speed Open	Momentary interruption of rear speed sensor LH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RL Wheel Speed
RL Speed Open

The values change in accordance with the operation of the vehicle and there is no intermittent operation.

NOTE:

Perform the above inspection before removing the sensor and connector.

Result

Proceed to
OK
NG

Result:

END

Result:

See step 4