DTC C0512-12: Right Rear Wheel Speed Sensor Circuit Short to Battery [10/2020 - ]: Procedure

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of skid control sensor wire RH (to Rear Speed Sensor RH (Rear Axle Hub and Bearing Assembly RH))

   OK

   The connector is securely connected.

2. Disconnect the f1 rear speed sensor RH (rear axle hub and bearing assembly RH) connector.
3. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

4. Turn the ignition switch to ON.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   f1-2 (RR+) - f1-1 (RR-)	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH. Refer to  REMOVAL [03/2017 - ] 

Result: 

NG 

See step  2

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Skid Control Sensor Wire RH)

   OK

   The connector is securely connected.

2. Disconnect the fR1 skid control sensor wire RH connector.
3. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

4. Turn the ignition switch to ON.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   fR1-1 (RR+) - fR1-2 (RR-)	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SKID CONTROL SENSOR WIRE RH 

Result: 

NG 

See step  3

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Skid Control Sensor Wire RH)

   OK

   The connector is securely connected.

2. Disconnect the A33 skid control ECU (brake actuator assembly) connector.
3. Disconnect the fR1 skid control sensor wire RH connector.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   fR1-2 (RR-) - Body ground	Always	Below 1.5 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

2. Disconnect the A33 skid control ECU (brake actuator assembly) connector.
3. Disconnect the fR1 skid control sensor wire RH connector.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   fR1-1 (RR+) or A33-17 (RR+) - fR1-2 (RR-) or A33-29 (RR-)	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR