- Repair or replacement.
- Turn the engine switch on (IG).
- Drive the vehicle at 2 km/h (1 mph) or more to clear the warning lights.
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001D2LU |
| Model Year Start: 2019 | Model: GR Corolla | Prod Date Range: [06/2018 - 09/2022] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C050023; Left Front Wheel Speed Sensor Signal Stuck Low; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022] | ||
|
DTC |
C050023 |
Left Front Wheel Speed Sensor Signal Stuck Low |
DESCRIPTION
Refer to DTC C050012
Click here
![2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C050012; Left Front Wheel Speed Sensor Circuit Short to Battery](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C050023 |
Left Front Wheel Speed Sensor Signal Stuck Low |
|
|
DTC Detection Conditions: C050023
|
Vehicle Condition |
||||
|---|---|---|---|---|
|
Pattern 1 |
Pattern 2 |
Pattern 3 |
||
|
Diagnosis Condition |
The vehicle is driven from 0 km/h to 12 km/h (0 mph to 7 mph). |
○ |
- |
- |
|
The vehicle speed reaches 18 km/h (11 mph). |
- |
○ |
- |
|
|
The vehicle speed and wheel speed are both 50.4 km/h (31.3 mph) or more. |
- |
- |
○ |
|
|
Malfunction Status |
The wheel speed is 1.8 km/h (1.1 mph) or less. |
○ |
- |
- |
|
The wheel speed has not exceeded 1.8 km/h (1.1 mph). |
- |
○ |
- |
|
|
The pulse signal is not detected. |
- |
- |
○ |
|
|
Detection Time |
0.6 seconds or more. |
- |
0.08 seconds or more. |
|
|
Number of Trips |
1 trip |
1 trip |
1 trip |
|
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
-
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
-
DTC precaution
Click here
Procedure to clear warning lights (When not clearing DTCs)
Procedure
PROCEDURE
|
1. |
CHECK FREEZE FRAME DATA (WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(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 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 |
|
|
|
2. |
READ VALUE USING TECHSTREAM (FL WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Data List.
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 |
(d) Start the engine and perform a road test.
(e) 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 |
|
|
|
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) |
|
| OK |
|
| NG |
|
|
|