Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001XNMO
Model Year Start: 2022 Model: Avalon Prod Date Range: [08/2021 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C050014; Left Front Wheel Speed Sensor Circuit Short to Ground or Open; 2022 MY Avalon [08/2021 -        ]

DTC

C050014

Left Front Wheel Speed Sensor Circuit Short to Ground or Open

DESCRIPTION

Refer to DTC C050012

Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C050012; Left Front Wheel Speed Sensor Circuit Short to Battery

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C050014

Left Front 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.
  • Front speed sensor LH
  • Wire harness or connector
  • Skid control sensor with suspension control wire LH*
  • Skid control ECU (brake actuator assembly)

*: w/ AVS

DTC Detection Conditions: C050014

 

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 C050012.

Click here 2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): C050012; Left Front 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 if the vehicle is equipped with AVS.

Result

Proceed to

w/o AVS

A

w/ AVS

B
B

GO TO STEP 5

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 wire harness connector

(to Front Speed Sensor LH)

(b) Disconnect the A61 front speed sensor LH 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

A61-1 (FL+) - A61-2 (FL-)

Engine switch on (IG)

11 to 14 V
NG

GO TO STEP 4

OK

3.

CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR LH - 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 A61 front speed sensor LH 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

A61-2 (FL-) or A28-7 (FL-) - Body ground

Always

10 kΩ or higher
OK

REPLACE FRONT SPEED SENSOR LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR LH - 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 A61 front speed sensor LH 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

A61-2 (FL-) - A28-7 (FL-)

Always

Below 1 Ω
OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.

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 with suspension control wire LH

(to Front Speed Sensor LH)

(b) Disconnect the z15 front speed sensor LH 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

z15-1 (FL+) - z15-2 (FL-)

Engine switch on (IG)

11 to 14 V
NG

GO TO STEP 8

OK

6.

INSPECT SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH

(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 with suspension control wire LH

*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 z15 skid control sensor with suspension control wire LH connector.

(c) Disconnect the A60 skid control sensor with suspension control wire LH 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

z15-2 (FL-) or A60-5 (FL-) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPLACE SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH
OK

7.

CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH - 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 A60 skid control sensor with suspension control wire LH 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

A60-5 (FL-) or A28-7 (FL-) - Body ground

Always

10 kΩ or higher
OK

REPLACE FRONT SPEED SENSOR LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

INSPECT SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH

(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 with suspension control wire LH

*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 z15 skid control sensor with suspension control wire LH connector.

(c) Disconnect the A60 skid control sensor with suspension control wire LH 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

z15-2 (FL-) - A60-5 (FL-)

Always

Below 1 Ω
NG

REPLACE SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH
OK

9.

CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WITH SUSPENSION CONTROL WIRE LH - 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 A60 skid control sensor with suspension control wire LH 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

A60-5 (FL-) - A28-7 (FL-)

Always

Below 1 Ω
OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR