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)  C050C49  Left 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 DTC Output from Priority
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

·

Wire harness or connector

·

Skid control sensor wire LH (No. 2 parking brake wire assembly)

·

Skid control ECU (brake actuator assembly)


Brake/EPB A

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT)

Procedure1

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.



Pre-procedure1

b.

Disconnect the k2 rear speed sensor LH connector.


Procedure2

c.

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

OK:

No deformation or corrosion.



Pre-procedure2

d.

Turn the ignition switch to ON.


Procedure3

e.

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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(k2)Location & Routing

Click Connector(k2)Body>Parking Brake Wire Assy>Rear Speed Sensor LH

k2-2 (LA+) - k2-1 (LA-) Ignition switch ON 11 to 14 V


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

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

NG

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

Procedure1

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.



Pre-procedure1

b.

Disconnect the k2 rear speed sensor LH connector.


Procedure2

c.

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

OK:

No deformation or corrosion.



Procedure3

d.

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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(k2)Location & Routing

Click Connector(k2)Body>Parking Brake Wire Assy>Rear Speed Sensor LH

k2-2 (LA+) - Body ground Ignition switch off Below 1.5 V


Result:
Proceed to
OK
NG



Post-procedure1

e.

None



OK

3.INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

NG

5.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)
3.INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

Procedure1

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.



Pre-procedure1

b.

Disconnect the k2 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.
C418961C05
0.469,0.25 0.885,0.5 0.417,0.25 2.479,0.229 2.896,0.479 0.417,0.25 0.573,1.74 0.573,1.167 false 2.74,1.76 2.74,1.385 false 0.083,0.083 0.417,0.333 0.333,0.25 10 false *a 0.948,0.292 1.281,0.542 0.333,0.25 10 false *b 2.958,0.271 3.125,0.688 0.167,0.417 10 false *c 0.615,0.302 0.948,0.552 0.333,0.25 10 false k2 2.594,0.281 2.927,0.531 0.333,0.25 10 false kL1 0.5,1.781 0.833,2.031 0.333,0.25 10 false LA- 2.667,1.802 2.99,2.115 0.323,0.313 10 false RL-
*a Front view of Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly)
*b Front view of wire harness connector
(to Sensor Side Connector)
*c Front view of wire harness connector
(to Vehicle Side Connector)


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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(k2,kL1)Location & Routing

Click Connector(k2)Body>Parking Brake Wire Assy>Rear Speed Sensor LH

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

k2-1 (LA-) or kL1-4 (RL-) - Body ground and other terminals Always 10 kΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

4.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

NG

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

4.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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.



Pre-procedure1

b.

Disconnect the A40 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1,A40)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assembly

kL1-4 (RL-) or A40-23 (RL-) - Body ground Always 10 kΩ or higher


HINT:

The rear speed sensor LH (for 2WD) and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.

If the rear speed sensor LH (for 2WD) 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

f.

None



OK

REPLACE REAR SPEED SENSOR LH

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

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Procedure1

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.



Pre-procedure1

b.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

c.

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

OK:

No deformation or corrosion.



Procedure3

d.
C418960C06
1.5,0.167 1.917,0.417 0.417,0.25 1.854,1.563 2.177,1.885 true 0.167,0.167 0.5,0.417 0.333,0.25 10 false *a 1.615,0.219 2.031,0.469 0.417,0.25 10 false kL1 2.229,1.906 2.594,2.125 0.365,0.219 10 false RL+
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

kL1-3 (RL+) - Body ground Ignition switch off Below 1.5 V


Result:
Proceed to
OK
NG



Post-procedure1

e.

None



OK

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

NG

6.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)
6.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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.



Pre-procedure1

b.

Disconnect the A40 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.
C418960C06
1.5,0.167 1.917,0.417 0.417,0.25 1.854,1.563 2.177,1.885 true 0.167,0.167 0.5,0.417 0.333,0.25 10 false *a 1.615,0.219 2.031,0.469 0.417,0.25 10 false kL1 2.229,1.906 2.594,2.125 0.365,0.219 10 false RL+
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

kL1-3 (RL+) - Body ground Always Below 1.5 V


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT)

Procedure1

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.



Pre-procedure1

b.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

c.

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

OK:

No deformation or corrosion.



Pre-procedure2

d.

Turn the ignition switch to ON.


Procedure3

e.
C418960C05
1.51,0.167 1.927,0.417 0.417,0.25 1.229,1.854 1.583,1.573 true 2.198,1.885 1.865,1.573 true 0.167,0.167 0.5,0.417 0.333,0.25 10 false *a 1.625,0.208 2.042,0.458 0.417,0.25 10 false kL1 1.073,1.885 1.438,2.104 0.365,0.219 10 false RL- 2.24,1.906 2.604,2.125 0.365,0.219 10 false RL+
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

kL1-3 (RL+) - kL1-4 (RL-) Ignition switch ON 11 to 14 V


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

NG

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

Procedure1

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.



Pre-procedure1

b.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

c.

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

OK:

No deformation or corrosion.



Pre-procedure2

d.

Turn the ignition switch to ON.


Procedure3

e.
C418960C06
1.5,0.167 1.917,0.417 0.417,0.25 1.854,1.563 2.177,1.885 true 0.167,0.167 0.5,0.417 0.333,0.25 10 false *a 1.615,0.219 2.031,0.469 0.417,0.25 10 false kL1 2.229,1.906 2.594,2.125 0.365,0.219 10 false RL+
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

kL1-3 (RL+) - Body ground Ignition switch ON 11 to 14 V


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

9.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

NG

11.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)
9.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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.



Pre-procedure1

b.

Disconnect the A40 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.
C418960C10
1.51,0.167 1.927,0.417 0.417,0.25 1.229,1.854 1.583,1.573 true 0.167,0.167 0.5,0.417 0.333,0.25 10 false *a 1.625,0.208 2.042,0.458 0.417,0.25 10 false kL1 1.073,1.885 1.438,2.104 0.365,0.219 10 false RL-
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

kL1-4 (RL-) - Body ground Always Below 1.5 V


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

10.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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.



Pre-procedure1

b.

Disconnect the A40 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1,A40)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assembly

kL1-4 (RL-) - A40-23 (RL-) Always Below 1 Ω
kL1-3 (RL+) or A40-39 (RL+) - kL1-4 (RL-) or A40-23 (RL-) Always 10 kΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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.



Pre-procedure1

b.

Disconnect the A40 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the kL1 skid control sensor wire LH (No. 2 parking brake wire assembly) connector.


Procedure2

d.

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

OK:

No deformation or corrosion.



Procedure3

e.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(kL1,A40)Location & Routing

Click Connector(kL1)Body>Parking Brake Wire Assy>Parking Brake Wire Assembly LH and No. 2 Floor Wire

Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assembly

kL1-3 (RL+) - A40-39 (RL+) Always Below 1 Ω
kL1-3 (RL+) or A40-39 (RL+) - Body ground Always 10 kΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

f.

None



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR