Mitsubishi Outlander (2013+). Manual — part 444
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-19
• The number of poles on the magnetic encoder for
wheel speed detection (the number of N-pole and
S-pole) is changed.
Past trouble
• When the diagnosis code No. C100A, C1015,
C1020 or C102B is also set, carry out diagnosis
with particular emphasis on wiring harness and
connector failures between ABS-ECU and the
wheel speed sensor. For diagnosis procedures,
refer to How to treat past trouble (GROUP 00
−
How to Use Troubleshooting/How to Treat Past
Trouble ).
• When the diagnosis code No. C100A, C1015,
C1020 or C102B is not set, the following condi-
tions may be present:
• Some wheels slip.
• Unstable vehicle attitude
• External noise interference
• Vehicle ran with the parking brake applied.
• Only two wheels are rotated on a drum tester.
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnosis
Use M.U.T.-III to diagnose the CAN bus lines.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the CAN bus lines (Refer to GROUP
54C
− CAN Bus Diagnostics Table ). On
completion, go to Step 2.
STEP 2. Diagnosis code recheck after resetting
CAN bus lines
Q: Is the diagnosis code No.C1014, C101F, C102A or
C1035 set?
YES :
Go to Step 3.
NO :
This diagnosis is complete.
STEP 3. M.U.T.-III diagnosis code
Check that the diagnosis code No.C100A, C1015,
C1020 or C102B is also set.
Q: Is the diagnosis code No.C100A, C1015, C1020 or
C102B also set?
YES :
Perform the diagnosis for the diagnosis
code No.C100A, C1015, C1020 or C102B
(Refer to
NO :
Go to Step 4.
STEP 4. Check the wiring harness between the
ABS-ECU connector terminal and the wheel
speed sensor connector terminal
Code No.C1014 is set
• Check of short to power supply, short to earth,
and open circuit in FL+, FL
− line between
ABS-ECU connector and front wheel speed sen-
sor (LH) connector.
Code No.C101F is set
• Check of short to power supply, short to earth,
and open circuit in FR+, FR
− line between
ABS-ECU connector and front wheel speed sen-
sor (RH) connector.
Code No.C102A is set
• Check of short to power supply, short to earth,
and open circuit in RL+, RL
− line between
ABS-ECU connector and rear wheel speed sen-
sor (LH) connector.
Code No.C1035 is set
• Check of short to power supply, short to earth,
and open circuit in RR+, RR
− line between
ABS-ECU connector and rear wheel speed sen-
sor (RH) connector.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the connector(s) or wiring harness.
Then go to Step 11.
STEP 5. Check for wheel speed sensor
installation
Check how the wheel speed sensor is installed (Dis-
connection of wheel speed sensor, loose mounting
bolt, etc.).
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Reinstall the wheel speed sensor correctly
(Refer to
<front> or
<rear>). Then go to Step 6.
STEP 6. Check for wheel speed sensor output
current
Refer to
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Replace the wheel speed sensor (Refer to
<front> or
Then go to Step 10.
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-20
STEP 7. Check for wheel bearing looseness
NOTE: Loose wheel bearing may increase the gap
between the wheel speed sensor and the wheel
speed detection magnet encoder. Check the wheel
bearing for looseness. <Refer to GROUP 26
−
Wheel
Bearing Axial Play Check . (front), GROUP 27A
−
Wheel Bearing Axial Play Check (rear-2WD) or
GROUP 27B
−
Wheel Bearing Axial Play Check
(rear-4WD)>
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Replace the wheel bearing <front> or rear
wheel hub assembly <rear>. <Refer to
GROUP 26
− Front Axle Hub Assembly
(front), GROUP 27A
− Rear Axle Hub
Assembly (rear-2WD) or GROUP 27B
−
Rear Axle Hub Assembly (rear-4WD)>
Then go to Step 11.
STEP 8. Check of wheel speed detection encoder
AC504925
Oil seal
Magnetic
encoder
AD
Wheel
bearing
<Front>
AC808708
Ball bearing
Rear hub
assembly
Magnetic
encoder
<2WD>
<Rear>
<4WD>
Rear wheel bearing
Rear hub
assembly
Magnetic
encoder
AC
Check the encoder for adhesion of foreign materials
or deformation.
Q: Is the check result normal?
YES :
Go to Step 9.
NO (Adhesion of foreign materials) :
Remove the
foreign materials and clean the encoder so
as not to disturb the magnetisation pattern
on it while taking care of the magnet,
magnetic substance, and magnetic
attraction. Then go to Step 11.
NO (Deformation) :
Replace the wheel bearing
<front> or rear wheel hub assembly <rear>.
<Refer to GROUP 26
− Front Axle Hub
Assembly (front), GROUP 27A
− Rear Axle
Hub Assembly (rear-2WD) or GROUP 27B
− Rear Axle Hub Assembly (rear-4WD)>
Then go to Step 11.
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-21
STEP 9. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Drive the vehicle at 20 km/h or higher.
NOTE: The ABS warning lamp does not turn OFF
in some cases unless the vehicle runs at 20 km/h
or higher.
Q: Is the diagnosis code No.C1014, C101F, C102A or
C1035 set?
YES :
Replace the wheel speed sensor (Refer to
<front> or
Then go to Step 10.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/How to
Cope with Intermittent Malfunctions ).
STEP 10. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Drive the vehicle at 20 km/h or higher.
NOTE: The ABS warning lamp does not turn OFF
in some cases unless the vehicle runs at 20 km/h
or higher.
Q: Is the diagnosis code No.C1014, C101F, C102A or
C1035 set?
YES :
Replace the hydraulic unit (integrated with
ABS-ECU) (Refer to
). Then go to
Step 11.
NO :
This diagnosis is complete.
STEP 11. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Drive the vehicle at 20 km/h or higher.
NOTE: The ABS warning lamp does not turn OFF
in some cases unless the vehicle runs at 20 km/h
or higher.
Q: Is the diagnosis code No.C1014, C101F, C102A or
C1035 set?
YES :
Return to Step 1.
NO :
This diagnosis is complete.
Code No. C1041 FL wheel speed tone performance
Code No. C1042 FR wheel speed tone performance
Code No. C1043 RL wheel speed tone performance
Code No. C1044 RR wheel speed tone performance
CAUTION
If there is any problem in the CAN bus lines, an
incorrect diagnosis code may be set. Prior to this
diagnosis, diagnose the CAN bus lines (Refer to
GROUP 54C
− CAN Bus Diagnostics Table ).
OPERATION
• The wheel speed sensor is a kind of a pulse gen-
erator. It consists of encoders (a plate on which
north and south pole sides of the magnets are
arranged alternately) for detecting the wheel
speed which rotates at the same speed of the
wheels and wheel speed sensors. This sensor
outputs frequency pulse signals in proportion to
the wheel speed.
• The pulse signals, which the wheel speed sensor
creates, are sent to ABS-ECU. ABS-ECU uses
the frequency of the pulse signals to determine
the wheel speed.
DIAGNOSIS CODE SET CONDITIONS
ABS-ECU monitors the signals from each wheel
speed sensor while the vehicle is being driven. If any
periodical drop is found in these sensor signals,
ABS-ECU will set the relevant diagnosis code.
PROBABLE CAUSES
• Wheel bearing malfunction
• Deformation of the wheel speed detection
encoder
• Adhesion of foreign materials on the wheel speed
detection encoder
• ABS-ECU malfunction
• The number of poles on the Magnetic encoder for
wheel speed detection (N-pole and S-pole) is
changed
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnosis
Use M.U.T.-III to diagnose the CAN bus lines.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the CAN bus lines (Refer to GROUP
54C
− CAN Bus Diagnostics Table ). On
completion, go to Step 2.
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-22
STEP 2. Diagnosis code recheck after resetting
CAN bus lines
Q: Is the diagnosis code No.C1041, C1042, C1043 or
C1044 set?
YES :
Go to Step 3.
NO :
This diagnosis is complete.
STEP 3. Check for wheel bearing looseness
NOTE: Loose wheel bearing may increase the gap
between the wheel speed sensor and the wheel
speed detection magnet encoder. Check the wheel
bearing for looseness. <Refer to GROUP 26
−
Wheel
Bearing Axial Play Check . (front), GROUP 27A
−
Wheel Bearing Axial Play Check (rear-2WD) or
GROUP 27B
−
Wheel Bearing Axial Play Check
(rear-4WD)>
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the wheel bearing <front> or rear
wheel hub assembly <rear>. <Refer to
GROUP 26
− Front Axle Hub Assembly
(front), GROUP 27A
− Rear Axle Hub
Assembly (rear-2WD) or GROUP 27B
−
Rear Axle Hub Assembly (rear-4WD)>
Then go to Step 7.
STEP 4. Check of wheel speed detection encoder
AC504925
Oil seal
Magnetic
encoder
AD
Wheel
bearing
<Front>
AC808708
Ball bearing
Rear hub
assembly
Magnetic
encoder
<2WD>
<Rear>
<4WD>
Rear wheel bearing
Rear hub
assembly
Magnetic
encoder
AC
Check the encoder for adhesion of foreign materials
or deformation.
Q: Is the check result normal?
YES :
Go to Step 5.
NO (Adhesion of foreign materials) :
Remove the
foreign materials and clean the encoder so
as not to disturb the magnetisation pattern
on it while taking care of the magnet,
magnetic substance, and magnetic
attraction. Then go to Step 7.
NO (Deformation) :
Replace the wheel bearing
<front> or rear wheel hub assembly <rear>.
<Refer to GROUP 26
− Front Axle Hub
Assembly (front), GROUP 27A
− Rear Axle
Hub Assembly (rear-2WD) or GROUP 27B
− Rear Axle Hub Assembly (rear-4WD)>
Then go to Step 7.
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