BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model) C050023 Left Front Wheel Speed Sensor Signal Stuck Low
DESCRIPTION
Refer to DTC C050012
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| 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 |
Brake/EPB | A |
CAUTION / NOTICE / HINT
- NOTICE:
-
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
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 - 50040 435 13,14,15,16 C050023
- Result:
Result Proceed to The value of FL Wheel Speed is 2 km/h or less, and the value of all FR Wheel Speed, RL Wheel Speed, RR Wheel Speed is 12 km/h or more A The value of FL Wheel Speed is 2 km/h or less, and the value of all FR Wheel Speed, RL Wheel Speed, RR Wheel Speed is 50 km/h or more B
- HINT:
- ·
2 km/h = 1 mph
·12 km/h = 7 mph
·50 km/h = 31 mph
A
B
Pre-procedure1
Start the engine and perform a road test.
Procedure1
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).
- 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 - 50003 435 14
- 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.
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
| *1 | Front Speed Sensor LH |
| *a | Correct |
| *b | Incorrect |
| *c | 8.5 N*m (87 kgf*cm, 75 in.*lbf) |
| *d | No clearance |
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)
- Result:
Proceed to OK NG
OK
NG