Mitsubishi Outlander (2013+). Manual - part 411

TROUBLESHOOTING

ELECTRONICALLY CONTROLLED 4WD

27C-14

STEP 4. M.U.T.-III diagnosis code.
Check if the wheel speed sensor-related, G and yaw 
rate sensor-related, or steering wheel sensor-related 
diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Carry out the appropriate troubleshooting. 

Then go to Step 9.

NO : 

Go to Step 5.

STEP 5. Check of steering wheel sensor 
installation status
Check that the steering wheel sensor is installed cor-
rectly (Refer to GROUP 35C 

− Steering Wheel Sen-

sor ).

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Install the steering wheel sensor correctly. 
Then go to Step 6.

STEP 6. Wheel alignment check

Q: Is the check result normal?

YES : 

After checking the wheel alignment, 

calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and 

reset the steering wheel sensor correction 
amount stored in the 4WD-ECU(Refer to 

P.27C-48

). Then, go to Step 7.

NO : 

After adjusting the wheel alignment, 
calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and 

reset the steering wheel sensor correction 
amount stored in the 4WD-ECU(Refer to 

P.27C-48

). Then, go to Step 7.

STEP 7. M.U.T.-III data list.
Check the following data list (Refer to

P.27C-45

).

• Item No.8: Steering angle sensor

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Replace the steering wheel sensor (Refer to 
GROUP 35C 

− Steering Wheel Sensor ). 

Then, go to Step 9.

STEP 8. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C1219 set?

YES : 

Replace the 4WD-ECU (Refer to 

P.27C-51

). 

Then, go to Step 9 .

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 9. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C1219 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No.C121A: Steering Wheel Sensor Initialization <ASC>

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.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

• When the steering wheel sensor is replaced, 

calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and reset 

the steering wheel sensor correction amount 
stored in the 4WD-ECU. (Item No. 1: SAS 
adjusted value 

P.27C-48

).

OPERATION

Steering wheel sensor stores the neutral position 
learned by the M.U.T.-III. When the neutral position 
has not been learned, the steering wheel sensor out-
puts the signal indicating that the learning has not 
been performed.

DIAGNOSIS CODE SET CONDITION

This diagnosis code is set when the abnormality 
below is detected:

• the steering wheel sensor has not learned the 

neutral position

TROUBLESHOOTING

ELECTRONICALLY CONTROLLED 4WD

27C-15

PROBABLE CAUSES

• Steering wheel sensor neutral point not learned

• Malfunction of steering wheel sensor

• Malfunction of 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− Troubleshooting ). After repairing the 

CAN bus line, go to Step 2.

STEP 2. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C121A set?

YES : 

Go to Step 3.

NO : 

This diagnosis is complete.

STEP 3. Steering wheel sensor calibration.
Perform calibration of the steering wheel sensor 
(Refer to GROUP 35C 

− On-vehicle Service ).

Q: Has the calibration succeeded?

YES : 

Go to Step 4.

NO : 

Replace the steering wheel sensor (Refer to 
GROUP 35C 

− Steering Wheel Sensor ). 

Then, go to Step 4.

STEP 4. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C121A set?

YES : 

Replace the 4WD-ECU (Refer to 

P.27C-51

). 

Then, go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 5. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C121A set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No.C123C: Sensor Cluster Malfunction <ASC>

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.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

• When the steering wheel sensor is replaced, 

calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and reset 

the steering wheel sensor correction amount 
stored in the 4WD-ECU. (Item No. 1: SAS 
adjusted value 

P.27C-48

).

• When hydraulic unit (integrated with G and 

yaw rate sensor) is replaced, calibrate G and 
yaw rate sensor (Refer to GROUP 35C 

− 

On-vehicle Service .)

OPERATION

4WD-ECU receives the G and yaw rate sensor data 
from ASC-ECU via the CAN communication.

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set when the abnormality 
below is detected:

• Abnormality in G and yaw rate sensor output 

value

• Abnormality is detected by a comparison of out-

put value from the G and yaw rate sensor with the 
output values from wheel speed sensor and 
steering wheel sensor.

PROBABLE CAUSES

• Malfunction of G and yaw rate sensor

• Malfunction of wheel speed sensor

• Improper installation of steering wheel sensor

• Malfunction of steering wheel sensor

• Malfunction of 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q: Is the check result normal?

TROUBLESHOOTING

ELECTRONICALLY CONTROLLED 4WD

27C-16

YES : 

Go to Step 3.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− Troubleshooting ). After repairing the 

CAN bus line, go to Step 2.

STEP 2. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C123C set?

YES : 

Go to Step 3.

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III diagnosis code.
Check the ASC diagnosis code. (Refer to GROUP 
35C 

− Troubleshooting ).

Q: Is the check result normal?

YES : 

Perform the relevant troubleshooting.

NO : 

Go to Step 4.

STEP 4. M.U.T.-III other system diagnosis code.
Check if the wheel speed sensor-related, or steering 
wheel sensor-related diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Perform the relevant troubleshooting.

NO : 

Go to Step 5.

STEP 5. Check of hydraulic unit (integrated with 
G and yaw rate sensor) installation status.
Check that the hydraulic unit (integrated with G and 
yaw rate sensor) is installed correctly (Refer to 
GROUP 35C 

− Hydraulic unit (integrated with G and 

yaw rate sensor) ).

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Reinstall the hydraulic unit (integrated with 
G and yaw rate sensor) correctly. Then go 
to Step 6.

STEP 6. M.U.T.-III data list.
Check the following data list (Refer to 

P.27C-45

).

• Item No.22: Yaw rate sensor

• Item No.23: Lateral G sensor

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Replace the hydraulic unit (integrated with 
G and yaw rate sensor) is installed correctly 
(Refer to GROUP 35C 

− Hydraulic unit 

(integrated with G and yaw rate sensor) ). 
Then go to Step 11.

STEP 7. Check of steering wheel sensor 
installation status.
Check that the steering wheel sensor is installed cor-
rectly (Refer to GROUP 35C 

− Steering Wheel Sen-

sor ).

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Install the steering wheel sensor correctly. 
Then go to Step 8.

STEP 8. Wheel alignment check.

Q: Is the check result normal?

YES : 

After checking the wheel alignment, 

calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and 

reset the steering wheel sensor correction 
amount stored in the 4WD-ECU(Refer to 

P.27C-48

). Then go to Step 9.

NO : 

After adjusting the wheel alignment, 
calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service ), and 

reset the steering wheel sensor correction 
amount stored in the 4WD-ECU(Refer to 

P.27C-48

). Then go to Step 9.

STEP 9. M.U.T.-III data list.
Check the following data list (Refer to

P.27C-45

).

• Item No.8: Steering angle sensor

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Replace the steering wheel sensor (Refer to 
GROUP 35C 

− Steering Wheel Sensor ). 

Then go to Step 10.

STEP 10. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C123C set?

YES : 

Replace the 4WD-ECU (Refer to 

P.27C-51

). 

Then go to Step 11.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 11. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C123C set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

TROUBLESHOOTING

ELECTRONICALLY CONTROLLED 4WD

27C-17

Code No.C1242: Straight G Sensor Signal

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.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

• When hydraulic unit (integrated with G and 

yaw rate sensor) is replaced, calibrate G and 
yaw rate sensor (refer to GROUP 35C 

− 

On-vehicle Service )

OPERATION

4WD-ECU receives the G and yaw rate sensor data 
from ASC-ECU via the CAN communication.

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set when the abnormality 
below is detected:

• Abnormality in G and yaw rate sensor output 

value

• The abnormality is detected by comparing the 

longitudinal G-sensor value output from the G 
and yaw rate sensor with the value output from 
the wheel speed sensor.

PROBABLE CAUSES

• Malfunction of G and yaw rate sensor

• Malfunction of wheel speed sensor

• Malfunction of stop lamp switch

• Malfunction of 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− Troubleshooting ). After repairing the 

CAN bus line, go to Step 2.

STEP 2. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C1242 set?

YES : 

Go to Step 3.

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III other system diagnosis code.
Check if the wheel speed sensor-related diagnosis 
code is set.

Q: Is the diagnosis code set?

YES : 

Perform the relevant troubleshooting.

NO : 

Go to Step 4.

STEP 4. Check of hydraulic unit (integrated with 
G and yaw rate sensor) installation status.
Check that the hydraulic unit (integrated with G and 
yaw rate sensor) is installed correctly (Refer to 
GROUP 35B 

− Hydraulic unit (integrated with G and 

yaw rate sensor)  <Vehicles with ABS>GROUP 35C 
− Hydraulic unit (integrated with G and yaw rate sen-
sor)  <Vehicles with ASC>).

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Reinstall the hydraulic unit (integrated with 
G and yaw rate sensor) correctly. Then go 
to Step 5.

STEP 5. M.U.T.-III data list.
Check the following data list (Refer to

P.27C-45

).

• Item No.24: Longitudinal G sensor

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Replace the hydraulic unit (integrated with 
G and yaw rate sensor) (Refer to GROUP 
35B 

− Hydraulic unit (integrated with G and 

yaw rate sensor)  <Vehicles with ABS> or 
GROUP 35C 

− Hydraulic unit (integrated 

with G and yaw rate sensor)  <Vehicles with 
ASC>). Then go to Step 7.

STEP 6. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C1242 set?

YES : 

Replace the 4WD-ECU (Refer to 

P.27C-51

). 

Then go to Step 7.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 7. Check whether the diagnosis code is 
reset.

Q: Is diagnosis code No.C1242 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.