RM3660EC _54 Brake _080770 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0599814 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model (NR Series)) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model (NR Series))  C050C12  Left Rear Wheel Speed Sensor Circuit Short to Battery  


DESCRIPTION

Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control.

The speed sensor detects the magnetic fields of the speed sensor rotor as it rotates and outputs a pulse signal.

The frequency of the pulse varies in accordance with the rotational speed of the speed sensor rotor and the system uses this to determine the wheel speed.

DTC No. Detection Item DTC Detection Condition Trouble Area
C050C12 Left Rear Wheel Speed Sensor Circuit Short to Battery A short to +B in the speed sensor signal circuit is detected for 0.12 seconds or more.
·

Rear speed sensor LH (rear axle hub and bearing assembly LH)

·

Wire harness or connector

·

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

·

Skid control ECU (brake actuator assembly)



WIRING DIAGRAM

C480603E75
0.604,2.323 2.01,3.156 1.406,0.833 10 false Rear Speed Sensor LH (Rear Axle Hub and Bearing Assembly LH) 2.271,2.323 4.042,3.042 1.771,0.719 10 false Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly) 5.25,3.104 6.771,3.698 1.521,0.594 10 false Skid Control ECU (Brake Actuator Assembly) 5.292,1.26 5.75,1.458 0.458,0.198 10 false RL+ 3.24,1.146 3.698,1.344 0.458,0.198 10 false RL+ 1.635,1.125 2.094,1.323 0.458,0.198 10 false RL+ 2.448,1.135 2.906,1.333 0.458,0.198 10 false RL+ 1.635,1.833 2.094,2.031 0.458,0.198 10 false RL- 2.448,1.823 2.906,2.021 0.458,0.198 10 false RL- 3.24,1.823 3.698,2.021 0.458,0.198 10 false RL- 5.292,1.948 5.75,2.146 0.458,0.198 10 false RL- 2.063,1.135 2.521,1.333 0.458,0.198 10 false n2 2.073,1.823 2.531,2.021 0.458,0.198 10 false n2 3.625,1.135 4.031,1.354 0.406,0.219 10 false nO2 3.625,1.823 4.031,2.042 0.406,0.219 10 false nO2 2.104,1.604 2.406,1.833 0.302,0.229 10 false 1 5.271,2.969 5.729,3.167 0.458,0.198 10 false A51 2.104,0.927 2.406,1.156 0.302,0.229 10 false 2 3.708,0.927 4.01,1.156 0.302,0.229 10 false 1 3.719,1.625 4.021,1.854 0.302,0.229 10 false 2 4.99,1.01 5.292,1.24 0.302,0.229 10 false 39 4.979,1.688 5.281,1.917 0.302,0.229 10 false 23

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 (NR Series))>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 (NR Series))>TEST MODE PROCEDURE



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)
a.
C375628C31
0.354,0.677 0.74,0.948 0.385,0.271 2.083,1.75 1.844,1.146 true 1.417,1.75 1.594,1.146 true 0.208,0.188 0.521,0.385 0.313,0.198 10 false *a 0.469,0.75 0.781,0.948 0.313,0.198 10 false n2 2.021,1.802 2.417,2.021 0.396,0.219 10 false RL+ 1.313,1.792 1.708,2.01 0.396,0.219 10 false RL-
*a Front view of skid control sensor wire LH (No. 2 parking brake wire assembly)
(to Rear Speed Sensor LH (Rear Axle Hub and Bearing Assembly LH))


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 n2 rear speed sensor LH (rear axle hub and bearing assembly LH) 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:
Tester Connection Condition Specified Condition
n2-2 (RL+) - n2-1 (RL-) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH

Click hereDrivetrain>AXLE AND DIFFERENTIAL>REAR AXLE HUB (for Double Wishbone Type Suspension with Electric Parking Brake)>REMOVAL


NG

2.CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)
2.CHECK HARNESS AND CONNECTOR (SENSOR GROUND CIRCUIT)
a.
C401699C07
0.49,0.75 0.906,1.042 0.417,0.292 1.438,1.729 1.604,1.229 true 2.073,1.729 1.823,1.229 true 0.167,0.177 0.479,0.333 0.313,0.156 10 false *a 0.583,0.823 1.042,1.021 0.458,0.198 10 false nO2 1.344,1.771 1.802,1.969 0.458,0.198 10 false RL- 2.021,1.771 2.479,1.969 0.458,0.198 10 false RL+
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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 nO2 skid control sensor wire LH (No. 2 parking brake wire assembly) 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:
Tester Connection Condition Specified Condition
nO2-1 (RL+) - nO2-2 (RL-) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

NG

3.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)
3.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)
a.
C401699C08
0.281,0.844 0.688,1.115 0.406,0.271 1.156,1.719 1.573,1.219 true 0.167,0.146 0.479,0.344 0.313,0.198 10 false *a 0.365,0.906 0.823,1.104 0.458,0.198 10 false nO2 1.052,1.75 1.51,1.948 0.458,0.198 10 false RL-
*a Front view of wire harness connector
(to Skid Control Sensor Wire LH (No. 2 Parking Brake Wire Assembly))


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 A51 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the nO2 skid control sensor wire LH (No. 2 parking brake wire assembly) 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:
Tester Connection Condition Specified Condition
nO2-2 (RL-) - Body ground Always Below 1.5 V



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (NO. 2 PARKING BRAKE WIRE ASSEMBLY - 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 A51 skid control ECU (brake actuator assembly) connector.


c.

Disconnect the nO2 skid control sensor wire LH (No. 2 parking brake wire assembly) 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:
Tester Connection Condition Specified Condition
nO2-1 (RL+) or A51-39 (RL+) - nO2-2 (RL-) or A51-23 (RL-) 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