RM38N0EC _54 Brake _111814 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0503031 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model)  C124E62  Wheel Speed Sensor Signal Compare Failure  


DESCRIPTION

The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from each speed sensor.

These signals are used for recognizing that all four wheels are operating properly.

Therefore, signals from all wheels must be equal.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
C124E62 Wheel Speed Sensor Signal Compare Failure
·

Abnormal pulse signals from 2 or more sensors.

·

Discrepancy among four wheel speed sensor output.


·

Tire wear

·

Tire pressure

·

Tire and wheel size

·

Skid control ECU (brake actuator assembly)


Brake/EPB B

CAUTION / NOTICE / HINT

NOTICE:

DTC precaution

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>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 11 km/h (7 mph) or more for 1 second or more to clear the warning lights.




PROCEDURE

1.CHECK DTC
a.

Check the details of the DTCs.

Chassis > Brake/EPB > Trouble Codes
50001 435
HINT:

When DTC C05001C, C05061C, C050C1C and/or C05121C are output together with DTC C124E62, inspect and repair the trouble areas indicated by DTC C05001C, C05061C, C050C1C and/or C05121C first.



Result:
Result Proceed to
C05001C, C05061C, C050C1C, C05121C or C124E62 is output A
C124E62 is output B



A

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

B

2.PRE-CHECK
2.PRE-CHECK
a.

Check that all 4 tires are of correct size, are inflated to the correct pressure, and do not show excessive signs of wear.

Click hereGeneral>MAINTENANCE>TIRE AND WHEEL>INSPECTION

HINT:

If a tire is deformed or an incorrectly sized tire or wheel is installed, this DTC may be stored.



Result:
Proceed to
NEXT



NEXT

3.CHECK FREEZE FRAME DATA (WHEEL SPEED AND VEHICLE SPEED)
3.CHECK FREEZE FRAME DATA (WHEEL SPEED AND VEHICLE SPEED)
a.

Read the freeze frame data of DTC C124E62.

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
Vehicle Speed Vehicle speed 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(C124E62) > Freeze Frame Data
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
Vehicle Speed
50040 435 13,14,15,16,51 C124E62

Result:
Proceed to
NEXT



NEXT

4.READ VALUE USING GTS (WHEEL SPEED AND VEHICLE SPEED)
4.READ VALUE USING GTS (WHEEL SPEED AND VEHICLE SPEED)

Pre-procedure1

a.

Start the engine.


b.

Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.


Procedure1

c.

Check the value of Wheel Speed and Vehicle Speed.

Chassis > Brake/EPB > 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 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
Vehicle Speed Vehicle speed 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 > Data List
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
Vehicle Speed
50003 435 13,14,15,16,36
OK:

The value of each Wheel Speed and Vehicle Speed changes in accordance with vehicle speed and the maximum difference between any 2 sensors is less than 6%.


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.

Using to the freeze frame data, the approximate vehicle conditions that were present when the DTC was stored can be determined.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>FREEZE FRAME DATA


Result:
Proceed to
OK
NG



Post-procedure1

d.

None



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR (for Gasoline Model)>REMOVAL