BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
DTC
C0210/33 Rear Speed Sensor RH Circuit
DTC
C0215/34 Rear Speed Sensor LH Circuit
DTC
C1238/38
Foreign Object is Attached on Tip of Rear
Speed Sensor RH
DTC
C1239/39
Foreign Object is Attached on Tip of Rear
Speed Sensor LH
BC–65
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are
used to control the ABS, BA, TRAC, A-TRAC, VSC, AUTO LSD, downhill assist and hill-start assist
control systems. This speed sensor contains a sensor IC, which consists of 2 MREs (Magnetic
Resistance Element). The speed sensor rotor, which consists of 48 sets of N and S poles that are
arranged in a circle, is integrated with the inner race of the hub bearing.
To detect the rotation direction, the output waves are used to determine the relationship of the pulses that
are generated by 2 MREs. Upon receiving this signal, the sensor IC outputs a forward or backward wave
to the ECU.
BC
Speed Sensor
MRE A
(+)
Sensor IC
To ECU
MRE B
(-)
Speed Sensor Rotor
(Bearing Inner Race)
Low speed
High speed
2.6 V
1.4 V
0.7 V
Backward
Forward
I042838E01
BC–66
BC
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
DTC No.
DTC Detection Condition
Trouble Area
C0210/33
C0215/34
When any of the following conditions is detected:
1. At a vehicle speed of 6 mph (10 km/h) or more,
pulses are not input for 1 second.
2. Momentary interruption of the speed sensor signal
occurs at least 255 times when switching the ignition
switch ON and OFF.
3. Continuous noise occurs in speed sensor signals at
a vehicle speed of 12 mph (20 km/h) or more.
4. Speed sensor signal circuit is open for 0.12 seconds
or more.
5. 3 of the wheel sensors detect normal reversing
signals, and the other wheel sensor detects malfunction
signals 75 times with IG ON while reversing at 3 km/h.
6. Rotating direction of each wheel changes 7 times
within 0.006 seconds with IG ON while driving at 10 km/
h or more.
7. Rotating direction of one of the wheels is not the
same as that of the other wheels for 1 second while
driving at 30 km/h or more.
8. Reversing signal is output for 1 second or more while
driving at 100 km/h or more.
9. Rotating direction of one of the wheels is not
detected normally, and the rotating direction of each of
the other wheels is not the same for 1 second while
driving at 30 km/h or more.
•
•
•
•
•
Right rear and left rear speed sensor
Each speed sensor circuit
Speed sensor rotor
Sensor installation
Master cylinder solenoid
C1238/38
C1239/39
Continuous noise occurs in speed sensor signals when
vehicle speed is 12 mph (20 km/h) or more for 5
seconds or more.
•
•
•
•
Right rear and left rear speed sensor
Speed sensor rotor
Sensor installation
Master cylinder solenoid
HINT:
• DTC C0210/33 and C1238/38 are for the right rear speed sensor.
• DTC C0215/34 and C1239/39 are for the left rear speed sensor.
BC–67
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
WIRING DIAGRAM
Master Cylinder Solenoid
Rear Speed Sensor RH
Shielded
5
1
2
S28
RR+
19
S28
RR-
20
S28
RL+
6
S28
RL-
Shielded
Rear Speed Sensor LH
1
2
BC
C132911E01
INSPECTION PROCEDURE
NOTICE:
When replacing the master cylinder solenoid, perform zero point calibration (See page BC-20).
1
READ VALUE OF INTELLIGENT TESTER (MOMENTARY INTERRUPTION OF REAR
SPEED SENSOR)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and push the
intelligent tester main switch ON.
(c) Select "DATA LIST" mode on the intelligent tester.
Item
Measurement Item / Range
(Display)
Normal Condition
Diagnostic Note
SPD SEN RR
Speed sensor open detection
(RR)/OPN DET or NORMAL
OPN DET: Momentary
interruption
NORMAL: Normal
-
SPD SEN RL
Speed sensor open detection
(RL)/OPN DET or NORMAL
OPN DET: Momentary
interruption
NORMAL: Normal
-
(d) Check for any momentary interruption in the wire
harness and connector corresponding to a DTC (See
page BC-18).
OK:
There are no momentary interruptions.
BC–68
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
HINT:
Perform the above inspection before removing the
sensor and connector.
NG
REPAIR OR REPLACE HARNESS OR
CONNECTOR (SPEED SENSOR CIRCUIT)
OK
2
READ VALUE OF INTELLIGENT TESTER (REAR SPEED SENSOR)
Item
Measurement Item / Range
(Display)
Normal Condition
Diagnostic Note
WHEEL SPD RR
Wheel speed sensor (RR)
reading /Min.: 0 mph (0 km/h),
Max.: 202 mph (326 km/h)
Actual wheel speed
Similar speed as indicated on
speedometer
WHEEL SPD RL
Wheel speed sensor (RL) reading
/Min.: 0 mph (0 km/h), Max.: 202
mph (326 km/h)
Actual wheel speed
Similar speed as indicated on
speedometer
(a) Check that there is no difference between the speed
value output from the speed sensor displayed on the
intelligent tester and the speed value displayed on the
speedometer when driving the vehicle.
OK:
The speed value output from the speed sensor
displayed on the intelligent tester is the same as
the actual vehicle speed.
BC
NG
Go to step 4
OK
3
PERFORM TEST MODE (SIGNAL CHECK)
(a) Check if test mode (signal check) DTCs are detected.
Result
Condition
Proceed to
Test mode (signal check) DTC is output
A
Test mode (signal check) DTC is not output
B
B
A
Go to step 10
BC–69
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
4
INSPECT REAR SPEED SENSOR INSTALLATION
(a) Check the speed sensor installation.
OK:
The installation nut is tightened properly.
There is no clearance between the sensor and the
rear axle.
Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf)
NOTICE:
Check the speed sensor signal after replacement (See
page BC-23).
8.3 N*m
(85 kgf*cm, 73 in.*lbf)
No clearance
OK
NG
I044006E04
NG
INSTALL REAR SPEED SENSOR
CORRECTLY
OK
5
INSPECT SPEED SENSOR TIP
(a) Remove the rear speed sensor (See page BC-213).
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after cleaning/
replacement (See page BC-23).
NG
CLEAN OR REPLACE REAR SPEED
SENSOR
OK
6
INSPECT REAR SPEED SENSOR
(a)
(b)
(c)
(d)
Rear Speed Sensor:
2
1
A41 :RH
A40 :LH
I045651E03
Install the rear speed sensor.
Turn the ignition switch off.
Disconnect the rear speed sensor connector.
Measure the resistance according to the value(s) in the
table below.
Standard resistance:
RH
Tester Connection
Specified Condition
A41-2 (RR+) - Body ground
10 kΩ or higher
A41-1 (RR-) - Body ground
10 kΩ or higher
LH
Tester Connection
Specified Condition
A40-2 (RL+) - Body ground
10 kΩ or higher
A40-1 (RL-) - Body ground
10 kΩ or higher
NG
REPLACE REAR SPEED SENSOR
BC
BC–70
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
OK
7
INSPECT SKID CONTROL SENSOR WIRE
(a) Disconnect the skid control sensor wire.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
RH
Skid Control Sensor Wire:
Sensor Side
Connector “A”:
Vehicle Side
Connector “B”:
A41 :RH
Tester Connection
Specified Condition
A40 :LH
A41 ("A"-2) - A41 ("B"-4)
Below 1 Ω
A41 ("A"-2) - A41 ("B"-3)
10 kΩ or higher
A41 ("A"-2) - Body ground
10 kΩ or higher
I044004E05
A41 ("A"-1) - A41 ("B"-3)
Below 1 Ω
A41 ("A"-1) - A41 ("B"-4)
10 kΩ or higher
A41 ("A"-1) - Body ground
10 kΩ or higher
LH
Tester Connection
BC
Specified Condition
A40 ("A"-2) - A40 ("B"-2)
Below 1 Ω
A40 ("A"-2) - A40 ("B"-1)
10 kΩ or higher
A40 ("A"-2) - Body ground
10 kΩ or higher
A40 ("A"-1) - A40 ("B"-1)
Below 1 Ω
A40 ("A"-1) - A40 ("B"-2)
10 kΩ or higher
A40 ("A"-1) - Body ground
10 kΩ or higher
NOTICE:
Check the speed sensor signal after replacement
(See page BC-23).
NG
OK
REPLACE SKID CONTROL SENSOR WIRE
BC–71
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
8
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
RH
Skid Control ECU
(harness side connector front view)
S28
RR+
RL-
Tester Connection
RR-
RL+
(harness side connector front view)
A41 :RH
RL-
RL+
S28-5 (RR+) - A41 (A-4) (RR+)
Below 1 Ω
S28-5 (RR+) - Body ground
10 kΩ or higher
S28-19 (RR-) - A41 (A-3) (RR-)
Below 1 Ω
S28-19 (RR-) - Body ground
10 kΩ or higher
LH
Rear Speed Sensor
A40 :LH
Specified Condition
RR-
Tester Connection
Specified Condition
S28-20 (RL+) - A40 (A-2) (RL+)
Below 1 Ω
S28-20 (RL+) - Body ground
10 kΩ or higher
S28-6 (RL-) - A40 (A-1) (RL-)
Below 1 Ω
S28-6 (RL-) - Body ground
10 kΩ or higher
NG
RR+
REPAIR OR REPLACE HARNESS OR
CONNECTOR
F049552E18
OK
9
INSPECT MASTER CYLINDER SOLENOID
(a) Reconnect the skid control ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage:
RH
Rear Speed Sensor
(harness side connector front view)
A40 :LH
A41 :RH
RL+
Tester Connection
Specified Condition
A41 (A-4) (RR+) - Body ground
7.5 to 12 V
RR+
C110680E19
LH
Tester Connection
Specified Condition
A40 (A-2) (RL+) - Body ground
7.5 to 12 V
NG
REPLACE MASTER CYLINDER SOLENOID
OK
10
RECONFIRM DTC
(a) Clear the DTCs (See page BC-39).
(b) Drive the vehicle at a speed of approximately 20 mph (32
km/h) or more for 60 seconds or more.
BC
BC–72
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
(c) Check if the same pending DTCs are detected (See
page BC-39).
HINT:
Reinstall the sensors, connectors, etc. and restore the
previous vehicle conditions before rechecking for DTCs.
Result
Condition
Proceed to
DTC is output
A
DTC is not output (When troubleshooting in accordance with the
DTC CHART.)
B
DTC is not output (When troubleshooting in accordance with the
PROBLEM SYMPTOMS TABLE.)
C
B
END
C
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
A
11
REPLACE REAR SPEED SENSOR
(a) Replace the rear speed sensor (See page BC-213).
NOTICE:
Check the speed sensor signal after replacement
(See page BC-23).
BC
NEXT
12
RECONFIRM DTC
(a) Clear the DTCs (See page BC-39).
(b) Drive the vehicle at a speed of approximately 20 mph (32
km/h) or more for 60 seconds or more.
(c) Check if the same pending DTCs are detected (See
page BC-39).
HINT:
Reinstall the sensors, connectors, etc. and restore the
previous vehicle conditions before rechecking for DTCs.
Result
Condition
Proceed to
DTC is output
A
DTC is not output
B
B
END
A
13
INSPECT SPEED SENSOR ROTOR
(a) Remove the rear axle bearing assembly (See page AH23).
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC–73
(b) Check the sensor rotor.
OK:
No scratches, oil, or foreign matter on the rotors.
NOTICE:
Check the speed sensor signal after cleaning/
replacement (See page BC-23).
NG
CLEAN OR REPLACE REAR AXLE BEARING
ASSEMBLY (SPEED SENSOR ROTOR)
OK
REPLACE MASTER CYLINDER SOLENOID
BC