DTC C0512-1F: Right Rear Wheel Speed Sensor Circuit Intermittent [11/2021 - 10/2023]: Procedure

READ VALUE USING GTS (RR 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
RR Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RR Speed Open	Momentary interruption of rear speed sensor RH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RR Wheel Speed
RR 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 RH INSTALLATION

Check the rear speed sensor RH installation.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Correct
*b	Incorrect

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

Result

Proceed to
OK
NG

Result:

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

Result:

See step 3

CHECK REAR SPEED SENSOR RH (CHECK FOR FOREIGN MATTER)

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

The rear speed sensor tip RH 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 RH, this DTC may be stored.

Result

Proceed to
OK
NG

Result:

See step 7

Result:

See step 4

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

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

The rear speed sensor rotor RH 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 RH, this DTC may be stored.
The rear speed sensor rotor RH is incorporated into the rear axle hub and bearing assembly RH.
If the rear speed sensor rotor RH needs to be replaced, replace it together with the rear axle hub and bearing assembly RH.

Result

Proceed to
OK
NG

Result:

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

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

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

Result:

See step 5

CLEAN REAR SPEED SENSOR ROTOR RH

Clean the rear speed sensor rotor RH.

NOTE:

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

Result

Proceed to
NEXT

Result:

See step 6

READ VALUE USING GTS (RR 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
RR Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RR Speed Open	Momentary interruption of rear speed sensor RH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RR Wheel Speed
RR 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 RH is incorporated into the rear axle hub and bearing assembly RH.

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

Result

Proceed to
OK
NG

Result:

END

Result:

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

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

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

CLEAN REAR SPEED SENSOR RH

Clean the rear speed sensor RH.

NOTE:

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

Result

Proceed to
NEXT

Result:

See step 8

READ VALUE USING GTS (RR 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
RR Wheel Speed	Rear 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 mph)	When driving at constant speed: No large fluctuations
RR Speed Open	Momentary interruption of rear speed sensor RH pulse input to ECU	Normal / Under intermittent	Normal: Normal Under intermittent: Momentary interruption	-

Chassis > Brake/EPB > Data List

Tester Display
RR Wheel Speed
RR 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