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 |
|
|
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:
Click here
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 |
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 |
|
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 |
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 | USE SIMULATION METHOD TO CHECK |
|
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 | REPLACE FRONT SPEED SENSOR LH |
NG | REINSTALL OR REPLACE FRONT SPEED SENSOR LH |