Mitsubishi Outlander GS45X. Manual - part 356

 

  Index      Mitsubishi     Mitsubishi Outlander GS45X - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  354  355  356  357   ..

 

 

Mitsubishi Outlander GS45X. Manual - part 356

 

 

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-45

• Disturbance of magnetization pattern for wheel speed 

detection encoder

• 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 DTC C1015 is also set, carry out diagnosis with 

particular emphasis on wiring harness and connector fail-
ures between ABS-ECU and the wheel speed sensor. For 
diagnosis procedures, refer to How to treat past trouble 
(Refer to GROUP 00 

− How to Use Troubleshooting/How to 

Treat Past Trouble 

P.00-17

).

• When DTC C1015 is not set, the following conditions may 

be present:

• Some wheels slip

• Unstable vehicle attitude

• External noise interference

• Vehicle ran with the parking brake applied.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
lines.
Use scan tool 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 

P.54C-17

). On 

completion, go to Step 2.

STEP 2. DTC recheck after resetting CAN bus lines
Q: Is DTC C101C set?

YES : Go to Step 3.
NO :  The procedure is complete.

STEP 3. Using scan tool MB991958, check the DTC
Check that the DTC C1015 is also set.
Q: Is DTC C1015 also set?

YES : Perform the diagnosis for the DTC C1015 (Refer to 

P.35B-22

).

NO :  Go to Step 4.

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-46

STEP 4. Connector check: A-01 ABS-ECU connector, A-59 
front wheel speed sensor <RH> connector
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Repair the defective connector. Then go to Step 12.

STEP 5. Wiring harness check between A-01 ABS-ECU 
connector terminal No.22 and A-59 front wheel speed 
sensor <RH> connector terminal No.1, and between A-01 
ABS-ECU connector terminal No.21 and A-59 front wheel 
speed sensor <RH> connector terminal No.2.
Q: Is the check result normal?

YES : Go to Step 6.
NO :  Repair the wiring harness. Then go to Step 12.

STEP 6. Check wheel speed sensor <FR> installation
Check how the wheel speed sensor <FR> is installed (Discon-
nection of wheel speed sensor <FR>, loose mounting bolt, 
etc.).
Q: Is the check result normal?

YES : Go to Step 7.
NO :  Reinstall the wheel speed sensor <FR> correctly 

(Refer to 

P.35B-189

). Then go to Step 7.

STEP 7. Check for wheel speed sensor <FR> output 
current
Refer to 

P.35B-184

.

Q: Is the check result normal?

YES : Go to Step 8.
NO :  Replace the wheel speed sensor <FR> (Refer to 

P.35B-189

). Then go to Step 11.

STEP 8. Check for wheel bearing looseness
NOTE: 

.

Loose wheel bearing may increase the gap between the 
wheel speed sensor <FR> and the wheel speed detection 
magnet encoder.

Check the wheel bearing <FR> for looseness (Refer to 
GROUP 26 

 Wheel Bearing Play Check 

P.26-11

).

Q: Is the check result normal?

YES : Go to Step 9.
NO :  Replace the wheel bearing <FR> (Refer to GROUP 

26 

− Front Axle Hub Assembly 

P.26-13

). Then go to 

Step 12.

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-47

STEP 9. Check wheel speed detection encoder
Check the encoder for adhesion of foreign materials or defor-
mation.
Q: Is the check result normal?

YES : Go to Step 10.
NO (Adhesion of foreign materials) : Remove the foreign 

materials and clean the encoder so as not to disturb 
the magnetization pattern on it while taking care of the 
magnet, magnetic substance, and magnetic 
attraction. Then go to Step 12.

NO (Deformation) : Replace the wheel bearing <FR> 

(Refer to GROUP 26 

− Front Axle Hub Assembly 

P.26-13

). Then go to Step 12.

STEP 10. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive the vehicle at 12mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some 
cases unless the vehicle runs at 12mph (20 km/h) or higher.

Q: Is DTC C101C set?

YES : Replace the wheel speed sensor <FR> (Refer to 

P.35B-189

). Then go to Step 11.

NO :  Intermittent malfunction (Refer to GROUP 00 

− How 

to Use Troubleshooting/How to Cope with Intermittent 
Malfunctions 

P.00-15

).

STEP 11. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive the vehicle at 12mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some 
cases unless the vehicle runs at 12mph (20 km/h) or higher.

Q: Is DTC C101C set?

YES : Replace the hydraulic unit (integrated with ABS-ECU) 

(Refer to 

P.35B-188

). Then go to Step 12.

NO :  The procedure is complete.

STEP 12. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive the vehicle at 12mph (20 km/h) or higher.

NOTE: The ABS warning light does not turn OFF in some 
cases unless the vehicle runs at 12mph (20 km/h) or higher.

Q: Is DTC C101C set?

YES : Return to Step 1.
NO :  The procedure is complete.

AC608761

Oil seal

Magnetic
encoder

Wheel
bearing

AB

ABS DIAGNOSIS

TSB Revision

ANTI-LOCK BRAKING SYSTEM (ABS)

35B-48

DTC C1027: Abnormality in RL wheel speed sensor signal

CAUTION

If there is any problem in the CAN bus lines, an incorrect 
DTC may be set. Prior to this diagnosis, diagnose the CAN 
bus lines (Refer to GROUP 54C 

 CAN Bus Line Diagnostic 

Flow 

P.54C-10

).

.

AC703729

Wheel Speed Sensor Circuit

ABS-ECU

(LH)

(LH)

(RH)

(RH)

REAR WHEEL SPEED SENSOR

AB

FRONT WHEEL SEED SENSOR

AC901112

Connector: A-01

A-01 (B)

AE

AC901075BC

Connector: C-129

AC709496

AO

Connector: D-114

 

 

 

 

 

 

 

Content   ..  354  355  356  357   ..