Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001XNMX
Model Year Start: 2022 Model: Avalon Prod Date Range: [08/2021 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C051214; Right Rear Wheel Speed Sensor Circuit Short to Ground or Open; 2022 MY Avalon [08/2021 -        ]

DTC

C051214

Right Rear Wheel Speed Sensor Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC C051212

Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C051212; Right Rear Wheel Speed Sensor Circuit Short to Battery

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C051214

Right Rear Wheel Speed Sensor Circuit Short to Ground or Open

A short or open circuit is detected in the speed sensor signal circuit for 0.12 seconds or more.
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)*1
  • Rear speed sensor RH*2
  • Wire harness or connector
  • Skid control sensor wire RH (No. 1 parking brake wire assembly)
  • Skid control ECU (brake actuator assembly)
  • *1: for 2WD
  • *2: for AWD

DTC Detection Conditions: C051214

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

-

-

-

Malfunction Status

An open circuit is detected in the speed sensor signal circuit.

○

-

A short circuit is detected in the speed sensor signal circuit.

-

○

Detection Time

0.12 seconds or more.

0.12 seconds or more.

Number of Trips

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

Refer to DTC C051212.

Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C051212; Right Rear Wheel Speed Sensor Circuit Short to Battery

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and system information memorization.

    Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): CALIBRATION

  • After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

    Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): TEST MODE PROCEDURE

PROCEDURE

1.

CHECK VEHICLE

(a) Check the vehicle specification.

Result

Proceed to

for 2WD

A

for AWD

B
B

GO TO STEP 11

A

2.

CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

(to Rear Speed Sensor RH (Rear Axle Hub and Bearing Assembly RH))

(b) Disconnect the Y5 rear speed sensor RH (rear axle hub and bearing assembly RH) connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the engine switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

Y5-2 (RA+) - Y5-1 (RA-)

Engine switch on (IG)

11 to 14 V

Result

Proceed to

OK (w/o AVS)

A

OK (w/ AVS)

B

NG (w/o AVS)

C

NG (w/ AVS)

D
B

GO TO STEP 5

C

GO TO STEP 7

D

GO TO STEP 9

A

3.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the Y5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y5-1 (RA-) or YK5-2 (RR-) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

4.

CHECK HARNESS AND CONNECTOR (NO. 1 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A28 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK5-2 (RR-) or A28-37 (RR-) - Body ground

Always

10 kΩ or higher
OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the Y5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(c) Disconnect the YK3 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y5-1 (RA-) or YK3-2 (RR-) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

6.

CHECK HARNESS AND CONNECTOR (NO. 1 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A28 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the YK3 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK3-2 (RR-) or A28-37 (RR-) - Body ground

Always

10 kΩ or higher
OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the Y5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y5-1 (RA-) - YK5-2 (RR-)

Always

Below 1 Ω
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

8.

CHECK HARNESS AND CONNECTOR (NO. 1 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A28 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK5-2 (RR-) - A28-37 (RR-)

Always

Below 1 Ω
OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the Y5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(c) Disconnect the YK3 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y5-1 (RA-) - YK3-2 (RR-)

Always

Below 1 Ω
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

10.

CHECK HARNESS AND CONNECTOR (NO. 1 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A28 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the YK3 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK3-2 (RR-) - A28-37 (RR-)

Always

Below 1 Ω
OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.

CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

(to Rear Speed Sensor RH)

(b) Disconnect the Y5 rear speed sensor RH connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(d) Turn the engine switch to on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

Y5-2 (RA+) - Y5-1 (RA-)

Engine switch on (IG)

11 to 14 V
NG

GO TO STEP 7

OK

12.

INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of skid control sensor wire RH (No. 1 parking brake wire assembly)

*b

Front view of wire harness connector

(to Sensor Side Connector)

*c

Front view of wire harness connector

(to Vehicle Side Connector)

(b) Disconnect the Y5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y5-1 (RA-) or YK5-2 (RR-) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY
OK

13.

CHECK HARNESS AND CONNECTOR (NO. 1 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

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

OK:

The connector is securely connected.

(b) Disconnect the A28 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the YK5 skid control sensor wire RH (No. 1 parking brake wire assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

YK5-2 (RR-) or A28-37 (RR-) - Body ground

Always

10 kΩ or higher
OK

REPLACE REAR SPEED SENSOR RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR