DTC C050C-12: Left 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 LH (to Rear Speed Sensor LH (Rear Axle Hub and Bearing Assembly LH))

   OK

   The connector is securely connected.

2. Disconnect the g1 rear speed sensor LH (rear axle hub and bearing assembly LH) 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
   g1-2 (RL+) - g1-1 (RL-)	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH. 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 LH)

   OK

   The connector is securely connected.

2. Disconnect the gR1 skid control sensor wire LH 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
   gR1-1 (RL+) - gR1-2 (RL-)	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SKID CONTROL SENSOR WIRE LH 

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 LH)

   OK

   The connector is securely connected.

2. Disconnect the A33 skid control ECU (brake actuator assembly) connector.
3. Disconnect the gR1 skid control sensor wire LH 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
   gR1-2 (RL-) - 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 gR1 skid control sensor wire LH 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
   gR1-1 (RL+) or A33-31 (RL+) - gR1-2 (RL-) or A33-18 (RL-)	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