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)  C050C23  Left Rear Wheel Speed Sensor Signal Stuck Low  


DESCRIPTION

Refer to DTC C050C12

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>C050C12

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
C050C23 Left Rear 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 43.2 km/h (26.8 mph) or more, the pulse signal is not detected for 0.08 seconds or more.


Rear speed sensor LH Brake/EPB A

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 2 km/h (1 mph) or more to clear the warning lights.




PROCEDURE

1.CHECK VEHICLE
a.

Check the vehicle specification.


Result:
Result Proceed to
for 2WD A
for AWD B



A

2.CHECK FREEZE FRAME DATA (WHEEL SPEED)

B

4.CHECK FREEZE FRAME DATA (WHEEL SPEED)
2.CHECK FREEZE FRAME DATA (WHEEL SPEED)
a.

Read the freeze frame data of DTC C050C23.

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(C050C23) > Freeze Frame Data
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
50040 435 13,14,15,16 C050C23
HINT:

The rear speed sensor LH and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.

If the rear speed sensor LH and rear speed sensor rotor LH need to be replaced, replace the rear axle hub and bearing assembly LH.



Result:
Result Proceed to
The value of RL Wheel Speed is 2 km/h or less, and the value of all FL Wheel Speed, FR Wheel Speed, RR Wheel Speed is 12 km/h or more A
The value of RL Wheel Speed is 2 km/h or less, and the value of all FL Wheel Speed, FR Wheel Speed, RR Wheel Speed is 43 km/h or more B


HINT:
·

2 km/h = 1 mph

·

12 km/h = 7 mph

·

43 km/h = 27 mph




A

3.READ VALUE USING GTS (RL WHEEL SPEED)

B

REPLACE REAR SPEED SENSOR LH

Click hereDrivetrain>AXLE AND DIFFERENTIAL>REAR AXLE HUB (for 2WD)>REMOVAL


3.READ VALUE USING GTS (RL WHEEL SPEED)

Pre-procedure1

a.

Start the engine and perform a road test.


Procedure1

b.

Check that the value of RL 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
RL Wheel Speed Rear 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
RL Wheel Speed
50003 435 16
OK:

The value of RL 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.

·

The rear speed sensor LH and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.

If the rear speed sensor LH and rear speed sensor rotor LH need to be replaced, replace the rear axle hub and bearing assembly LH.



Result:
Proceed to
OK
NG



Post-procedure1

c.

None



OK

USE SIMULATION METHOD TO CHECK

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


NG

REPLACE REAR SPEED SENSOR LH

Click hereDrivetrain>AXLE AND DIFFERENTIAL>REAR AXLE HUB (for 2WD)>REMOVAL


4.CHECK FREEZE FRAME DATA (WHEEL SPEED)
a.

Read the freeze frame data of DTC C050C23.

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(C050C23) > Freeze Frame Data
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
50040 435 13,14,15,16 C050C23

Result:
Result Proceed to
The value of RL Wheel Speed is 2 km/h or less, and the value of all FL Wheel Speed, FR Wheel Speed, RR Wheel Speed is 12 km/h or more A
The value of RL Wheel Speed is 2 km/h or less, and the value of all FL Wheel Speed, FR Wheel Speed, RR Wheel Speed is 43 km/h or more B


HINT:
·

2 km/h = 1 mph

·

12 km/h = 7 mph

·

43 km/h = 27 mph




A

5.READ VALUE USING GTS (RL WHEEL SPEED)

B

6.CHECK REAR SPEED SENSOR LH INSTALLATION
5.READ VALUE USING GTS (RL WHEEL SPEED)

Pre-procedure1

a.

Start the engine and perform a road test.


Procedure1

b.

Check that the value of RL 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
RL Wheel Speed Rear 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
RL Wheel Speed
50003 435 16
OK:

The value of RL 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

c.

None



OK

USE SIMULATION METHOD TO CHECK

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


NG

6.CHECK REAR SPEED SENSOR LH INSTALLATION
6.CHECK REAR SPEED SENSOR LH INSTALLATION
a.
C168336C10
1.031,0.823 1.25,0.49 false 0.917,1.49 1.24,1.74 false 0.75,1.823 1.073,1.99 0.323,0.167 10 *a 2.427,1.823 2.75,1.99 0.323,0.167 10 *b 0.135,0.135 0.448,0.333 0.313,0.198 10 *1 1.292,0.313 1.625,0.521 0.333,0.208 10 *c 1.292,1.729 1.604,1.927 0.313,0.198 10 *d
*1 Rear Speed Sensor LH
*a Correct
*b Incorrect
*c 8.5 N*m (87 kgf*cm, 75 in.*lbf)
*d No clearance


Check the rear speed sensor LH installation.

OK:

There is no clearance between the rear speed sensor LH and the rear axle carrier LH.

The installation bolt is tightened properly.

Torque:

8.5 N*m (87 kgf*cm, 75 in.*lbf)



Result:
Proceed to
OK
NG



OK

REPLACE REAR SPEED SENSOR LH

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>REAR SPEED SENSOR (for AWD)>REMOVAL


NG

REINSTALL OR REPLACE REAR SPEED SENSOR LH

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>REAR SPEED SENSOR (for AWD)>INSTALLATION