Mitsubishi Outlander (2013+). Manual - part 468

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-47

PROBABLE CAUSES

• ETACS-ECU or ASC-ECU which was equipped 

with other vehicle is used.

• Malfunction of ETACS-ECU

• ASC-ECU malfunction

• External noise interference

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 6.

STEP 2. M.U.T.-III Diagnosis code of other system
Use M.U.T.-III to check that the vehicles informa-
tion-related diagnosis code is set by the 
ETACS-ECU.

Q: Is the diagnosis code set?

YES : 

Troubleshoot the relevant diagnosis code, 

and then go to Step 3.

NO : 

Go to Step 5.

STEP 3. ETACS-ECU coding data check
Refer to GROUP 00 

− Precautions before Serv-

ice/Coding List .

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. ETACS-ECU variant coding
Perform the variant coding to the ETACS-ECU.

Q: Dose variant coding succeed?

YES : 

Go to Step 6.

NO : 

Replace the ETACS-ECU (Refer to GROUP 
54A 

− ETACS-ECU ), and then go to Step 6.

STEP 5. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Ignition switch "LOCK" (OFF)
(3) Ignition switch "ON"

Q: Is diagnosis code No.C2206 set?

YES : 

Replace the hydraulic unit (integrated with 

ASC-ECU) (Refer to 

P.35C-95

). Then go to 

Step 6.

NO : 

This diagnosis is complete.

STEP 6. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Ignition switch "LOCK" (OFF)
(3) Ignition switch "ON"

Q: Is diagnosis code No.C2206 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. C1210 Longitudinal G sensor input circuit

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 ).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

• When the hydraulic unit (integrated with 

ASC-ECU) is replaced, always carry out the 
calibration of the steering wheel sensor, the G 
and yaw rate sensor and brake fluid pressure 
sensor (Refer to 

P.35C-93

, 

P.35C-94

 and 

P.35C-94

).

OPERATION

• ASC-ECU monitors if the output of G and yaw 

rate sensor is normal or not.

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set if any malfunction below is 
found:

• When the output value of the longitudinal G-sen-

sor is abnormal

PROBABLE CAUSES

• ASC-ECU malfunction

• External noise interference

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-48

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 diagnosis code No.C1210 set?

YES : 

Go to Step 3.

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III data list
Check the following data list (Refer to 

P.35C-85

).

• Item 09: G sensor

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the hydraulic unit (integrated with 
ASC-ECU) (Refer to 

P.35C-95

). Then go to 

Step 5.

STEP 4. Check whether the diagnosis code is 
reset.
Erase the diagnosis code.

Q: Is diagnosis code No.C1210 set?

YES : 

Replace the hydraulic unit (integrated with 

ASC-ECU) (Refer to 

P.35C-95

), and then 

go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/How to 

Cope with Intermittent Malfunctions ).

STEP 5. Check whether the diagnosis code is 
reset.
Erase the diagnosis code.

Q: Is diagnosis code No.C1210 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. C1242 Longitudinal 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 
(Refer to GROUP 54C, Trouble code diagnosis 
).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

• When the hydraulic unit (integrated with 

ASC-ECU) is replaced, always carry out the 
calibration of the steering wheel sensor, the G 
and yaw rate sensor and brake fluid pressure 
sensor (Refer to 

P.35C-93

, 

P.35C-94

 and 

P.35C-94

).

OPERATION

ASC-ECU monitors if the output of G and yaw rate 
sensor is normal or not.

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set when 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 wheel speed sensor

• ASC-ECU malfunction

• External noise interference

NOTE: When rotated on the four-wheel drum tester, 
this diagnosis code may be set.

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.C1242 set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-49

STEP 3. Check the wheel speed sensor-related 
diagnosis code.
Use the M.U.T.-III to check whether the wheel speed 
sensor-related diagnosis code is set or not.

Q: Is the diagnosis code set?

YES : 

Troubleshoot for the relevant diagnosis 

code (Refer to 

P.35C-15

).

NO : 

Go to Step 4

STEP 4. Check whether the ASC-ECU is installed 
properly.
Check whether the ASC-ECU is installed correctly. 
Refer to 

P.35C-95

.

Q: Is the check result normal?

YES : 

Execute "G sensor calibration" on "Special 

function". After the calibration is performed 
(Refer to 

P.35C-93

) , turn the ignition switch 

from "OFF" to "ON".Then go to Step 5.

NO : 

Install the ASC-ECU properly, and execute 
"G sensor calibration" on "Special function". 
After the calibration is performed (Refer to 

P.35C-93

) , turn the ignition switch from 

"OFF" to "ON".Then go to Step 5.

STEP 5. M.U.T.-III data list
Check the following data list under curb weight con-
dition or one occupant (driver) only in the vehicle, on 
a flat road (Refer to 

P.35C-85

).

• Item 09: G sensor

• Item 96: G sensor offset

Q: Is the check result normal?

YES : 

Turn the ignition switch to the "ON" from 

"OFF" position. Then go to Step 6.

NO : 

Replace the hydraulic unit (integrated with 
ASC-ECU) (Refer to 

P.35C-95

), and then 

go to Step 7.

STEP 6. 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.C1242 set?

YES : 

Replace the hydraulic unit (integrated with 

ASC-ECU) (Refer to 

P.35C-95

), and then 

go to Step 7.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/How to 

Cope with Intermittent Malfunctions ).

STEP 7. 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.C1242 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. C123C Sensor cluster malfunction

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 ).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

• When the steering wheel sensor is replaced, 

always carry out calibration to make 
ASC-ECU learn the neutral point (Refer to 

P.35C-94

).

• When the hydraulic unit (integrated with 

ASC-ECU) is replaced, always carry out the 
calibration of the steering wheel sensor, the G 

and yaw rate sensor and brake fluid pressure 
sensor (Refer to 

P.35C-93

, 

P.35C-94

 and 

P.35C-94

).

OPERATION

ASC-ECU monitors if the output of G and yaw rate 
sensor is normal or not.

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set if any malfunction below is 
found:

• The output value of lateral G and yaw rate is 

abnormal.

• When abnormality is detected by comparing the 

value output from the lateral G and yaw rate with 
the one from the steering wheel sensor and 
wheel speed sensor

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-50

PROBABLE CAUSES

• Steering wheel sensor malfunction

• Improperly installed steering wheel sensor

• Malfunction of wheel speed sensor

• ASC-ECU malfunction

• External noise interference

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.C123C set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

STEP 3. Check the other sensor-related 
diagnosis code.
Use M.U.T.-III to check whether the wheel speed 
sensor-related or steering wheel sensor-related diag-
nosis code is set or not.

Q: Is the diagnosis code set?

YES : 

Troubleshoot for the relevant diagnosis 

code (Refer to 

P.35C-15

).

NO : 

Go to Step 4

STEP 4. Check whether the ASC-ECU is installed 
properly.
Check whether the ASC-ECU is installed correctly. 
Refer to 

P.35C-95

.

Q: Is the check result normal?

YES : 

Execute "Lateral G sensor calibration" on 

"Special function". After the calibration is 
performed (Refer to 

P.35C-93

) , turn the 

ignition switch from "OFF" to "ON".Then go 
to Step 5.

NO : 

Install the ASC-ECU properly, and execute 
"Lateral G sensor calibration" on "Special 
function". After the calibration is performed 
(Refer to 

P.35C-93

) , turn the ignition switch 

from "OFF" to "ON".Then go to Step 5.

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

P.35C-85

).

• Item 08: Lateral G sensor

• Item 12: Yaw rate sensor

Q: Is the check result normal?

YES : 

Go to Step 6

NO : 

Replace the hydraulic unit (integrated with 
ASC-ECU) (Refer to 

P.35C-95

), and then 

go to Step 10.

STEP 6. Steering wheel sensor installation check
Check that the steering wheel sensor is installed cor-
rectly.

Q: Is the check result normal?

YES : 

Go to Step 7

NO : 

Reinstall the steering wheel sensor correctly 
(Refer to 

P.35C-98

), and then go to Step 7.

STEP 7. Wheel alignment check
Refer to .

Q: Is the check result normal?

YES : 

After checking the wheel alignment, carry 

out calibration of steering wheel sensor to 
make ASC-ECU relearn the neutral point 
(Refer to 

P.35C-94

). Then go to Step 8.

NO : 

After adjusting the wheel alignment, carry 
out calibration of steering wheel sensor to 
make ASC-ECU relearn the neutral point 
(Refer to 

P.35C-94

). Then go to Step 8.

STEP 8. M.U.T.-III data list
Check the following data list (Refer to 

P.35C-85

).

• Item 11: Steering angle sensor

Q: Is the check result normal?

YES : 

Go to Step 9

NO : 

Replace the steering wheel sensor (Refer to 

P.35C-98

), and then go to Step 9.

STEP 9. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the steering wheel to either right or left at 20 

km/h or more.

NOTE: The ASC warning/operation lamp and the 
ASC OFF lamp may remain on until the vehicle 
speed reaches approx. 10 km/h,  then the steer-
ing wheel is turned to either right or left.

Q: Is the diagnosis code No.C123C set?