RM36D0EC _54 Brake _083077 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0402316 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model)  C050049  Left Front Wheel Speed Sensor Internal Electronic Failure  C050649  Right Front 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
C050049 Left Front Wheel Speed Sensor Internal Electronic Failure A circuit malfunction in the speed sensor is detected during the self test.
·

Front speed sensor LH

·

Wire harness or connector

·

Skid control ECU (brake actuator assembly)


C050649 Right Front Wheel Speed Sensor Internal Electronic Failure A circuit malfunction in the speed sensor is detected during the self test.
·

Front speed sensor RH

·

Wire harness or connector

·

Skid control ECU (brake actuator assembly)



CAUTION / NOTICE / HINT

NOTICE:
·

After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

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



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT)
a.
C408616C01
0.74,0.26 1.229,0.552 0.49,0.292 2.229,0.271 2.719,0.563 0.49,0.292 1.135,1.135 1.479,1.521 true 0.844,1.125 0.479,1.521 true 2.344,1.167 1.979,1.563 true 2.635,1.135 2.979,1.521 true 0.365,1.552 0.729,1.771 0.365,0.219 10 false FL- 0.135,0.083 0.323,0.24 0.188,0.156 10 false *a 0.854,0.344 1.146,0.5 0.292,0.156 10 false A92 2.344,0.354 2.792,0.552 0.448,0.198 10 false A91 0.49,0.354 0.802,0.552 0.313,0.198 10 false *A 1.969,0.385 2.281,0.583 0.313,0.198 10 false *B 1.385,1.594 1.75,1.813 0.365,0.219 10 false FL+ 1.885,1.604 2.25,1.823 0.365,0.219 10 false FR- 2.885,1.583 3.25,1.802 0.365,0.219 10 false FR+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Front 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 A91 or A92 front 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
A92-1 (FL+) - A92-2 (FL-) Ignition switch ON 11 to 14 V

for RH
Tester Connection Condition Specified Condition
A91-1 (FR+) - A91-2 (FR-) 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.
C408616C03
0.729,0.292 1.219,0.583 0.49,0.292 2.229,0.281 2.719,0.573 0.49,0.292 1.104,1.146 1.5,1.635 true 2.594,1.156 2.948,1.635 true 0.135,0.083 0.323,0.24 0.188,0.156 10 false *a 0.854,0.365 1.146,0.521 0.292,0.156 10 false A92 2.344,0.375 2.792,0.573 0.448,0.198 10 false A91 0.5,0.406 0.813,0.604 0.313,0.198 10 false *A 2,0.365 2.313,0.563 0.313,0.198 10 false *B 1.406,1.677 1.771,1.896 0.365,0.219 10 false FL+ 2.865,1.667 3.229,1.885 0.365,0.219 10 false FR+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Front 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 A91 or A92 front 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
A92-1 (FL+) - Body ground Ignition switch off Below 1.5 V

for RH
Tester Connection Condition Specified Condition
A91-1 (FR+) - Body ground Ignition switch off Below 1.5 V



Result:
Proceed to
OK
NG



OK

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

NG

4.CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
3.CHECK HARNESS AND CONNECTOR (FRONT 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 A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A91 or A92 front 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
A92-2 (FL-) or A39-7 (FL-) - Body ground Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
A91-2 (FR-) or A39-26 (FR-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE FRONT SPEED SENSOR

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.
C408616C03
0.729,0.292 1.219,0.583 0.49,0.292 2.229,0.281 2.719,0.573 0.49,0.292 1.104,1.146 1.5,1.635 true 2.594,1.156 2.948,1.635 true 0.135,0.083 0.323,0.24 0.188,0.156 10 false *a 0.854,0.365 1.146,0.521 0.292,0.156 10 false A92 2.344,0.375 2.792,0.573 0.448,0.198 10 false A91 0.5,0.406 0.813,0.604 0.313,0.198 10 false *A 2,0.365 2.313,0.563 0.313,0.198 10 false *B 1.406,1.677 1.771,1.896 0.365,0.219 10 false FL+ 2.865,1.667 3.229,1.885 0.365,0.219 10 false FR+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Front 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 A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A91 or A92 front 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
A92-1 (FL+) - Body ground Always Below 1.5 V

for RH
Tester Connection Condition Specified Condition
A91-1 (FR+) - Body ground Always Below 1.5 V



Result:
Proceed to
OK
NG



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

5.CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT)
a.
C408616C03
0.729,0.292 1.219,0.583 0.49,0.292 2.229,0.281 2.719,0.573 0.49,0.292 1.104,1.146 1.5,1.635 true 2.594,1.156 2.948,1.635 true 0.135,0.083 0.323,0.24 0.188,0.156 10 false *a 0.854,0.365 1.146,0.521 0.292,0.156 10 false A92 2.344,0.375 2.792,0.573 0.448,0.198 10 false A91 0.5,0.406 0.813,0.604 0.313,0.198 10 false *A 2,0.365 2.313,0.563 0.313,0.198 10 false *B 1.406,1.677 1.771,1.896 0.365,0.219 10 false FL+ 2.865,1.667 3.229,1.885 0.365,0.219 10 false FR+
*A for LH
*B for RH
*a Front view of wire harness connector
(to Front 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 A91 or A92 front 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
A92-1 (FL+) - Body ground Ignition switch ON 11 to 14 V

for RH
Tester Connection Condition Specified Condition
A91-1 (FR+) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

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

NG

8.CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
6.CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - BRAKE ACTUATOR ASSEMBLY)
a.
C408616C02
0.729,0.25 1.219,0.542 0.49,0.292 2.219,0.24 2.708,0.531 0.49,0.292 0.865,1.135 0.479,1.677 true 2.344,1.167 2.031,1.656 true 0.375,1.698 0.74,1.917 0.365,0.219 10 false FL- 0.135,0.083 0.323,0.24 0.188,0.156 10 false *a 0.844,0.313 1.135,0.469 0.292,0.156 10 false A92 2.323,0.302 2.771,0.5 0.448,0.198 10 false A91 0.5,0.313 0.813,0.51 0.313,0.198 10 false *A 1.979,0.281 2.292,0.479 0.313,0.198 10 false *B 1.896,1.688 2.26,1.906 0.365,0.219 10 false FR-
*A for LH
*B for RH
*a Front view of wire harness connector
(to Front 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 A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A91 or A92 front 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
A92-2 (FL-) - Body ground Always Below 1.5 V

for RH
Tester Connection Condition Specified Condition
A91-2 (FR-) - Body ground Always Below 1.5 V



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (FRONT 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 A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A91 or A92 front 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
A92-2 (FL-) - A39-7 (FL-) Always Below 1 Ω
A92-1 (FL+) or A39-24 (FL+) - A92-2 (FL-) or A39-7 (FL-) Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
A91-2 (FR-) - A39-26 (FR-) Always Below 1 Ω
A91-1 (FR+) or A39-21 (FR+) - A91-2 (FR-) or A39-26 (FR-) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



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

8.CHECK HARNESS AND CONNECTOR (FRONT 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 A39 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the A91 or A92 front 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
A92-1 (FL+) - A39-24 (FL+) Always Below 1 Ω
A92-1 (FL+) or A39-24 (FL+) - Body ground Always 10 kΩ or higher

for RH
Tester Connection Condition Specified Condition
A91-1 (FR+) - A39-21 (FR+) Always Below 1 Ω
A91-1 (FR+) or A39-21 (FR+) - 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 (for Gasoline Model)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR