Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028D6L
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 - 08/2023]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C050623; Right Front Wheel Speed Sensor Signal Stuck Low; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]

DTC

C050623

Right Front Wheel Speed Sensor Signal Stuck Low

DESCRIPTION

Refer to DTC C050612

Click here 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C050612; Right Front Wheel Speed Sensor Circuit Short to Battery+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C050623

Right Front Wheel Speed Sensor Signal Stuck Low
  • When the vehicle is driven from 0 km/h to 12 km/h (0 mph to 7 mph), the wheel speed is 1.8 km/h (1.1 mph) or less for 0.6 seconds or more.
  • When the wheel speed has not exceeded 1.8 km/h (1.1 mph), the vehicle speed reaches 18 km/h (11 mph).
  • When the vehicle speed and wheel speed are both 50.4 km/h (31.3 mph) or more, the pulse signal is not detected for 0.08 seconds or more.
  • Front speed sensor RH
  • Speed sensor installation

CAUTION / NOTICE / HINT

NOTICE:

DTC precaution

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): PRECAUTION

Procedure to clear warning lights (When not clearing DTCs)

Procedure
  1. Repair or replacement.
  2. Turn the ignition switch to ON.
  3. Drive the vehicle at 2 km/h (1 mph) or more to clear the warning lights.

PROCEDURE

1.

CHECK FREEZE FRAME DATA (WHEEL SPEED)

(a) Connect the GTS to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Chassis / Brake/EPB / Trouble Codes.

(d) Select a DTC to display the Freeze Frame Data.

(e) Read the freeze frame data of DTC C050623.

Chassis > Brake

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Wheel Speed

Front wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph), Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0.0 mph)

When driving at constant speed: No large fluctuations

FL Wheel Speed

Front wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph), Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0.0 mph)

When driving at constant speed: No large fluctuations

RR Wheel Speed

Rear wheel speed sensor RH reading

Min.: 0.0 km/h (0 mph), Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0.0 mph)

When driving at constant speed: No large fluctuations

RL Wheel Speed

Rear wheel speed sensor LH reading

Min.: 0.0 km/h (0 mph), Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0.0 mph)

When driving at constant speed: No large fluctuations

Chassis > Brake > DTC(C050623) > Freeze Frame Data

Tester Display

FR Wheel Speed

FL Wheel Speed

RR Wheel Speed

RL Wheel Speed

Result

Proceed to

The value of FR Wheel Speed is 2 km/h (1 mph) or less when all other values are 12 km/h (7 mph) or more.

A

The value of FR Wheel Speed is 2 km/h (1 mph) or less when all other values are 50 km/h (31 mph) or more.

B
B

GO TO STEP 3

A

2.

READ VALUE USING GTS (FR WHEEL SPEED)

(a) Connect the GTS to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Chassis / Brake/EPB / Data List.

Chassis > Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Wheel Speed

Front wheel speed sensor RH reading

Min.: 0.0 km/h (0.0 mph), Max.: 6553.5 km/h (4072 mph)

Vehicle stopped: 0.0 km/h (0.0 mph)

When driving at constant speed: No large fluctuations

Chassis > Brake > Data List

Tester Display

FR Wheel Speed

(d) Start the engine and perform a road test.

(e) Check that the value of FR Wheel Speed changes in accordance with vehicle speed when accelerating from 0 km/h to 20 km/h (0 mph to 12 mph).

OK:

The value of FR Wheel Speed changes in accordance with vehicle speed.

HINT:

If the result of the road test is within the specified range, it is possible that this DTC was stored due to a particular situation such as brake drag, wheelspin or wheel lockup.

OK

USE SIMULATION METHOD TO CHECK

NG

3.

CHECK FRONT SPEED SENSOR RH INSTALLATION

(a) Check the front speed sensor RH installation.

OK:

There is no clearance between the front speed sensor RH and the steering knuckle RH.

The installation bolt is tightened properly.

Torque

8.5 N*m (87 kgf*cm, 75 in.*lbf)

*1

Front Speed Sensor RH

*a

Correct

*b

Incorrect

*c

8.5 N*m (87 kgf*cm, 75 in.*lbf)

*d

No clearance
OK

REPLACE FRONT SPEED SENSOR RH

NG

REINSTALL OR REPLACE FRONT SPEED SENSOR RH