Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Left Front Wheel Speed Sensor Signal Stuck Low (C050023)

Toyota Corolla Cross (2022-2024) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Gasoline Model) / Left Front Wheel Speed Sensor Signal Stuck Low (C050023)

DESCRIPTION

Refer to DTC C050012

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C050023

Left 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 LH
  • Speed sensor installation

CAUTION / NOTICE / HINT

NOTICE:

DTC precaution

Click here

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) Select a DTC to display the Freeze Frame Data.

(b) Read the freeze frame data of DTC C050023.

Chassis > Brake/EPB

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/EPB > DTC(C050023) > Freeze Frame Data

Tester Display

FR Wheel Speed

FL Wheel Speed

RR Wheel Speed

RL Wheel Speed

Result

Proceed to

The value of FL 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 FL 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 (FL WHEEL SPEED)

(a) Check the Data List using the GTS.

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FL Wheel Speed

Front wheel speed sensor LH 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/EPB > Data List

Tester Display

FL Wheel Speed

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

(c) Check that the value of FL 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 FL 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 LH INSTALLATION

(a) Check the front speed sensor LH installation.

OK:

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

The installation bolt is tightened properly.

Torque

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

*1

Front Speed Sensor LH

*a

Correct

*b

Incorrect

*c

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

*d

No clearance
OK

REPLACE FRONT SPEED SENSOR LH

NG

REINSTALL OR REPLACE FRONT SPEED SENSOR LH

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