Mitsubishi Outlander (2013+). Manual - part 476

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-79

terminal) and the body earth

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Go to Step 11.

STEP 11. Check of open circuit in GND1, GND2 
line between ASC-ECU connector and body earth

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

NO : 

Repair the connector(s) or wiring harness. 
Then go to Step 13.

STEP 12. Retest the system.

Q: Is the communication with M.U.T.-III possible?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/How to 

Cope with Intermittent Malfunctions ).

NO : 

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

P.35C-95

). Then go to 

Step 13.

STEP 13. Retest the system.

Q: Is the communication with M.U.T.-III possible?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Inspection Procedure 13: Steering wheel sensor power supply circuit system

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

).

OPERATION

• Steering wheel sensor contains the power supply 

circuit for Steering wheel sensor. The power is 
supplied from the ETACS-ECU (IG11 terminal). 
The power is supplied from the fusible link.

• When malfunction occurs in steering wheel sen-

sor power supply, the communication with 
M.U.T.-III becomes unavailable.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Fusible link malfunction

• Improper tightening of battery terminal

• Battery failure

• Charging system failed

• Steering wheel sensor malfunction

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code
Check if diagnosis code is set to the ETACS-ECU.

Q: Is the diagnosis code set?

YES : 

Troubleshoot the ETACS. Refer to GROUP 

54A - ETACS .

NO : 

Go to Step 2.

STEP 2. Resistance measurement at steering 
wheel sensor connector
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between the steering wheel sensor 

connector (earth terminal) and the body earth

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Check of open circuit in earth line 
between steering wheel sensor connector and 
body earth

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

NO : 

Repair the connector(s) or wiring harness. 
Then go to Step 6.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-80

STEP 4. Check of short to power supply, short to 
earth, and open circuit in IG11 line between 
steering wheel sensor connector and 
ETACS-ECU connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness. 
Then go to Step 6.

STEP 5. Retest the system.

Q: Is the communication with M.U.T.-III possible?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/How to 

Cope with Intermittent Malfunctions ).

NO : 

Replace the steering wheel sensor (Refer to 

P.35C-98

). Then go to Step 6.

STEP 6. Retest the system.

Q: Is the communication with M.U.T.-III possible?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Inspection Procedure 14: ABS/stability control/TCL operates too frequently.

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnosis code may be set. Prior 
to this diagnosis, always 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

).

COMMENTS ON TROUBLE SYMPTOM

• Although the cause of the trouble cannot be 

clearly resolved since it depends on the running 
status and road surface condition, the malfunc-
tion of the hydraulic circuit may occur if any diag-
nosis code is not detected.

• If wheels and tyres other than the ones with gen-

uine specified size are mounted, the ABS/stability 
control/TCL may be activated prematurely.

• If a non-genuine braking device or non-genuine 

impact reduction device is mounted, the ABS/sta-
bility control/TCL may be activated prematurely.

PROBABLE CAUSES

• Mounting of wheels and tyres other than with 

genuine specified size

• Tyre pressure abnormality

• Tyre wear and deterioration

• Mounting of non-genuine braking device or 

impact reduction device

• Wheel alignment abnormality

• Malfunction of brake related parts

• Malfunction of the wheel speed sensor

• Steering wheel sensor malfunction

• Malfunction of hydraulic unit (integrated with 

ASC-ECU)

• Malfunction of hydraulic circuit

• External radio wave noise interference

DIAGNOSIS PROCEDURE

STEP 1. Check the wheels and the tyres.
Carry out the following check.

• Size check of wheels and tyres

• Tyre wear and deterioration statuses

• Check the tyre pressure.

NOTE: For the tyre pressure, refer to the tyre pres-

sure label attached to the lower section of driver's 
side door striker.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Correct the wheels and tyres in good 
condition. Then go to Step 9.

STEP 2. Diagnosis code check
Use M.U.T.-III to check the diagnosis code for the 
ASC system (Refer to 

P.35C-15

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Carry out the diagnosis for the diagnosis 
code (Refer to 

P.35C-15

). Then go to Step 

9.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-81

STEP 3. Check of brake system related 
components other than hydraulic unit (integrated 
with ASC-ECU)
At the same time with the following checks, also 
check that no parts other than the genuine parts are 
mounted.

• Brake pad check (Refer to GROUP 35A − 

On-vehicle Service/Brake Pad Check ).

• Brake disc runout check (Refer to GROUP 35A − 

On-vehicle Service/Brake Disk Check ).

• Brake drag force check <Refer to GROUP 35A − 

Front Disc Brake Assembly  (Front: Standard),  
(Front: Option) or GROUP 35A 

− Rear Disc 

Brake Assembly  (Rear: Vehicles with alloy made 
trailing arm),  (Rear: Vehicles with sheet metal 
made trailing arm)>

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the part(s) having damage 
or other problems. Then go to Step 9.

STEP 4. Wheel alignment check
At the same time with the following checks, also 
check that no parts other than the genuine parts are 
mounted.

• Front wheel alignment check (Refer to GROUP 

33 

− On-vehicle Service/Front Wheel Alignment 

Check and Adjustment ).

• Rear wheel alignment check (Refer to GROUP 

34 

− On-vehicle Service/Rear Wheel Alignment 

Check and Adjustment ).

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair or replace the part(s) having damage 
or other problems. Then go to Step 9.

STEP 5. Wheel speed sensor check
Check that no non-genuine electronic device or no 
wiring harness of other than genuine electronic 
device is mounted near the wheel speed sensor (at 
wheel speed detection section and wiring harness 
section) (Refer to 

P.35C-97

 <Front> or 

P.35C-97

 

<Rear>.)

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Remove the non-genuine electronic device 
or the wiring harness of non-genuine 
electronic device. Then go to Step 9.

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

P.35C-85

).

• Item 01: FL wheel speed sensor

• Item 02: FR wheel speed sensor

• Item 03: RL wheel speed sensor

• Item 04: RR wheel speed sensor

• Item 08: Lateral G-sensor

• Item 11: Steering angle sensor

• Item 12: Yaw rate sensor

Q: Is the check result normal?

YES : 

Go to Step 7.

NO (Abnormality with items 01 to 04) : 

Check the 

installation status of corresponding wheel 
speed sensor (Refer to 

P.35C-97

 <Front> or 

P.35C-97

 <Rear>).

NO (Abnormality with items 08, 12) : 

Check the 

installation status of hydraulic unit 
(integrated with ASC-ECU) (Refer to 

P.35C-95

).

NO (Abnormality with item 11) : 

Check the 

installation status of steering wheel sensor 
(Refer to 

P.35C-98

).

STEP 7. Hydraulic unit check
Carry out the following actuator tests, and check if 
they work normally (Refer to 

P.35C-87

).

• Item No. 01: FL wheel ABS

• Item No.02: FR wheel ABS

• Item No.03: RL wheel ABS

• Item No.04: RR wheel ABS

• Item No.05: FL wheel TCL

• Item No.06: FR wheel TCL

• Item No.07: RL wheel TCL

• Item No.08: RR wheel TCL

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

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

P.35C-95

). Then go to 

Step 9.

STEP 8. ABS/stability control/TCL operation 
check

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/How to 

Cope with Intermittent Malfunctions ).

NO : 

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

P.35C-95

). Then go to 

Step 9.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-82

STEP 9. ABS/stability control/TCL operation 
check

Q: Is the check result normal?

YES : 

This diagnosis is complete.

NO : 

Return to Step 1.

Inspection Procedure 15: HSA (Hill Start Assist) does not work.

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

).

COMMENTS ON TROUBLE SYMPTOM

• The slope gradient may be low.

• The vehicle is not completely stationary.

• A failure may have occurred in the calibration of 

the G and yaw rate sensor or brake fluid pressure 
sensor.

• The parking brake switch may be seized, which 

causes the HSA to fail to start the operation.

• A problem (noise interference) may have 

occurred in the CAN bus line, resulting in an 
improper communication with ASC-ECU or each 
ECU.

NOTE: 

.

•

The HSA does not work even when the wheel 
speed sensor output pulse (vehicle moved) while 
the vehicle is parked.

•

The HSA is affected by the loading conditions 
and vehicle posture at the occurrence of phe-
nomenon. When checking the HSA operation in 
actual driving, carry out the check on the vehicle 
with one occupant (driver) only.

PROBABLE CAUSES

• Calibration failure of the G and yaw rate sensor

• Calibration failure of the brake fluid pressure sen-

sor

• Seizure of the parking brake switch

• Malfunction of wheel speed sensor

• Malfunction of ETACS-ECU

• Malfunction of hydraulic unit (integrated with 

ASC-ECU)

• Wiring harness or connector failure of CAN bus 

line

• Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE

STEP 1. HSA operation check
Check if the HSA works with one occupant (driver) 
only in the vehicle.

Q: Is the check result normal?

YES : 

This diagnosis is complete.

NO : 

Go to Step 2.

STEP 2. Parking brake check
With the parking brake not pulled, check if the brake 
warning lamp is off.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Carry out Inspection procedure 3 "Brake 
warning lamp stays ON with the parking 
brake lever released (ABS warning lamp is 
OFF)" (Refer to 

P.35C-67

).

STEP 3. 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 4.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table ). Then 

go to Step 9.

STEP 4. M.U.T.-III diagnosis code
Use M.U.T.-III to check the diagnosis code for the 
ASC system.

Q: Is the diagnosis code set?

YES : 

Carry out the diagnosis for the diagnosis 

code (Refer to 

P.35C-15

).

NO : 

Go to Step 5.