BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch) C050023 Left Front Wheel Speed Sensor Signal Stuck Low C050623 Right Front Wheel Speed Sensor Signal Stuck Low
DESCRIPTION
Refer to DTC C050012
| 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 |
| 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 |
| 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.
| 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.
·DTC 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
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Chassis / Brake / Trouble Codes.
Select a DTC to display the Freeze Frame Data.
Read the freeze frame data of DTC C050023 or 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(C050023) > Freeze Frame Data
-
Tester Display FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed - 50040 435 13,14,15,16 C050023
- Chassis > Brake > DTC(C050623) > Freeze Frame Data
-
Tester Display FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed - 50040 435 13,14,15,16 C050623
- Result:
Result Proceed to The value of 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 Wheel Speed is 2 km/h (1 mph) or less when all other values are 50 km/h (31 mph) or more. B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Chassis / Brake / 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 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 > Data List
-
Tester Display FR Wheel Speed FL Wheel Speed - 50003 435 13,14
Start the engine and perform a road test.
Check that the value of 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 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.
- Result:
Proceed to OK NG
OK
NG
| *1 | Front Speed Sensor |
| *a | Correct |
| *b | Incorrect |
| *c | No clearance |
Check the front speed sensor installation.
- OK:
There is no clearance between the front speed sensor and the steering knuckle.
The installation bolt is tightened properly.
- Result:
Proceed to OK NG
OK
NG