RM35X0E _54 Brake _078667 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0383093 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/o VSC OFF Switch) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/o VSC OFF Switch)  C050C49  Left Rear Wheel Speed Sensor Internal Electronic Failure  C051249  Right Rear Wheel Speed Sensor Internal Electronic Failure  


DESCRIPTION

When the system is starting up and the skid control ECU (brake actuator assembly) detects a speed sensor circuit malfunction via the speed sensor circuit self-diagnosis function, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C050C49 Left Rear Wheel Speed Sensor Internal Electronic Failure A circuit malfunction in the speed sensor is detected during the self test.
·

Rear speed sensor LH (rear speed sensor)

·

Wire harness or connector

·

Skid control ECU (brake actuator assembly)


C051249 Right Rear Wheel Speed Sensor Internal Electronic Failure A circuit malfunction in the speed sensor is detected during the self test.
·

Rear speed sensor RH (rear speed sensor)

·

Wire harness or connector

·

Skid control ECU (brake actuator assembly)



CAUTION / NOTICE / HINT

NOTICE:
·

After replacing the skid control ECU (brake actuator assembly), perform store system information memorization.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o VSC OFF Switch)>UTILITY

·

After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o VSC OFF Switch)>TEST MODE PROCEDURE



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT)
a.
C410831C14
1.51,0.25 1.896,0.521 0.385,0.271 1.25,1.667 1.552,1.281 true 1.083,0.729 1.531,1.073 true 1.885,1.073 2.365,0.708 true 2.208,1.625 1.875,1.25 true 0.146,0.125 0.458,0.323 0.313,0.198 10 false *a 0.813,0.542 1.156,0.74 0.344,0.198 10 false RR+ 2.188,0.531 2.5,0.719 0.313,0.188 10 false RR- 1.635,0.302 1.948,0.5 0.313,0.198 10 false X1 2.354,1.698 2.667,1.896 0.313,0.198 10 false *A 1.125,0.542 1.438,0.74 0.313,0.198 10 false *B 2.083,1.698 2.479,1.917 0.396,0.219 10 false RL- 0.958,1.698 1.281,1.875 0.323,0.177 10 false RL+ 2.458,0.531 2.771,0.729 0.313,0.198 10 false *B 1.25,1.698 1.563,1.896 0.313,0.198 10 false *A
*A for LH
*B for RH
*a Front view of wire harness connector
(to Rear Speed Sensor)


Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the X1 rear speed sensor connector.


c.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



d.

Turn the ignition switch to ON.


e.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH
Tester Connection Condition Specified Condition
X1-4 (RL+) - X1-3 (RL-) Ignition switch ON 11 to 14 V

for RH
Tester Connection Condition Specified Condition
X1-2 (RR+) - X1-1 (RR-) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)

NG

5.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)
2.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)
a.
C410831C15
1.5,0.26 1.906,0.5 0.406,0.24 1.271,1.635 1.563,1.281 true 1.125,0.74 1.552,1.052 true 0.208,0.115 0.521,0.313 0.313,0.198 10 false *a 1.635,0.292 1.99,0.479 0.354,0.188 10 false X1 1.323,1.708 1.635,1.906 0.313,0.198 10 false *A 0.802,0.542 1.156,0.729 0.354,0.188 10 false RR+ 1.125,0.552 1.438,0.75 0.313,0.198 10 false *B 0.99,1.698 1.333,1.906 0.344,0.208 10 false RL+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Rear Speed Sensor)


Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the X1 rear speed sensor connector.


c.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



d.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH
Tester Connection Condition Specified Condition
X1-4 (RL+) - Body ground Ignition switch off Below 1.5 V

for RH
Tester Connection Condition Specified Condition
X1-2 (RR+) - Body ground Ignition switch off Below 1.5 V



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)

NG

4.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
3.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the X1 rear speed sensor connector.


d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



e.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
for LH
Tester Connection Condition Specified Condition
X1-3 (RL-) or A28-18 (RL-) - Body ground Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
X1-1 (RR-) or A28-29 (RR-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE REAR SPEED SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>REAR SPEED SENSOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.
C410831C16
1.5,0.26 1.906,0.5 0.406,0.24 1.573,1.052 1.25,0.688 true 1.552,1.271 1.302,1.604 true 0.208,0.115 0.521,0.313 0.313,0.198 10 false *a 1.635,0.292 1.99,0.479 0.354,0.188 10 false X1 1.302,1.646 1.615,1.844 0.313,0.198 10 false *A 0.917,0.5 1.333,0.75 0.417,0.25 10 false RR+ 1.24,0.5 1.552,0.698 0.313,0.198 10 false *B 0.99,1.646 1.375,1.833 0.385,0.188 10 false RL+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Rear Speed Sensor)


Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the X1 rear speed sensor connector.


d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



e.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH
Tester Connection Condition Specified Condition
X1-4 (RL+) - Body ground Ignition switch ON 11 to 14 V

for RH
Tester Connection Condition Specified Condition
X1-2 (RR+) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)
a.
C410831C16
1.5,0.26 1.906,0.5 0.406,0.24 1.573,1.052 1.25,0.688 true 1.552,1.271 1.302,1.604 true 0.208,0.115 0.521,0.313 0.313,0.198 10 false *a 1.635,0.292 1.99,0.479 0.354,0.188 10 false X1 1.302,1.646 1.615,1.844 0.313,0.198 10 false *A 0.917,0.5 1.333,0.75 0.417,0.25 10 false RR+ 1.24,0.5 1.552,0.698 0.313,0.198 10 false *B 0.99,1.646 1.375,1.833 0.385,0.188 10 false RL+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Rear Speed Sensor)


Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the X1 rear speed sensor connector.


c.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



d.

Turn the ignition switch to ON.


e.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH
Tester Connection Condition Specified Condition
X1-4 (RL+) - Body ground Ignition switch ON 11 to 14 V

for RH
Tester Connection Condition Specified Condition
X1-2 (RR+) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)

NG

8.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
6.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.
C410831C12
1.5,0.26 1.906,0.5 0.406,0.24 1.885,1.063 2.292,0.719 true 1.875,1.24 2.333,1.542 true 0.208,0.115 0.521,0.313 0.313,0.198 10 false *a 1.625,0.292 1.979,0.479 0.354,0.188 10 false X1 2.688,1.542 3,1.74 0.313,0.198 10 false *A 2.375,0.625 2.729,0.813 0.354,0.188 10 false RR- 2.677,0.625 2.99,0.823 0.313,0.198 10 false *B 2.417,1.531 2.698,1.708 0.281,0.177 10 false RL-
*A for LH
*B for RH
*a Front view of wire harness connector
(to Rear Speed Sensor)


Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the X1 rear speed sensor connector.


d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



e.

Turn the ignition switch to ON.


f.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH
Tester Connection Condition Specified Condition
X1-3 (RL-) - Body ground Always Below 1.5 V

for RH
Tester Connection Condition Specified Condition
X1-1 (RR-) - Body ground Always Below 1.5 V



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the X1 rear speed sensor connector.


d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



e.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
for LH
Tester Connection Condition Specified Condition
X1-3 (RL-) - A28-18 (RL-) Always Below 1 Ω
X1-3 (RL-) or A28-18 (RL-) - Body ground Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
X1-1 (RR-) - A28-29 (RR-) Always Below 1 Ω
X1-1 (RR-) or A28-29 (RR-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.

Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.



b.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the X1 rear speed sensor connector.


d.

Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.



e.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
for LH
Tester Connection Condition Specified Condition
X1-4 (RL+) - A28-31 (RL+) Always Below 1 Ω
X1-4 (RL+) or A28-31 (RL+) - Body ground Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
X1-2 (RR+) - A28-17 (RR+) Always Below 1 Ω
X1-2 (RR+) or A28-17 (RR+) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR