Mitsubishi Outlander (2013+). Manual - part 472

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-63

YES : 

Replace the hydraulic unit (integrated with 

ASC-ECU) (Refer to 

P.35C-95

).

NO : 

This diagnosis is complete.

STEP 3. Check whether the diagnosis code is 
reset.
Erase the diagnosis code.

Q: Is diagnosis code No.U0428 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. U1073 Bus-off

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 ).

• If diagnosis code U1073 is set in ASC-ECU, 

always diagnose the CAN bus line. If there is 
any fault in the CAN bus lines, an incorrect 
diagnosis code may be set. In this case, the 
set diagnosis code is not highly reliable.

• 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

).

DIAGNOSIS CODE SET CONDITIONS

This diagnosis code is set when ASC-ECU has 
ceased the CAN communication (bus off).

COMMENTS ON TROUBLE SYMPTOM

Malfunction of wiring harness, connector (s), or 
ASC-ECU may be present.

PROBABLE CAUSES

• Wiring harness or connector failure of CAN bus 

line

• ASC-ECU malfunction

• Other ECU malfunction

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 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 3.

STEP 2. Check whether the diagnosis code is 
reset.
Erase the diagnosis code.

Q: Is diagnosis code No. U1073 set?

YES : 

Replace the hydraulic unit (integrated with 

ASC-ECU) (Refer to 

P.35C-95

), and then 

go to Step 3.

NO : 

If the trouble symptom is resolved, an 
intermittent malfunction such as poorly 
engaged connector(s) or wiring harness is 
suspected (Refer to GROUP 00 

− How to 

Use Troubleshooting/How to Cope with 
Intermittent Malfunctions ).

STEP 3. Check whether the diagnosis code is 
reset.
Erase the diagnosis code.

Q: Is diagnosis code No. U1073 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-64

Code No. U1195 Coding not completed

 

Code No. U1197 Coding data unavailable

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 diagnosis code U1195 or U1197 is 

set in ASC-ECU, the diagnosis code may also 
be set in ETACS-ECU. When the diagnosis 
code is set in ETACS-ECU, carry out the diag-
nosis of the diagnosis code for ETACS-ECU 
first.

• 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 receives the vehicle information stored in 
the ETACS-ECU via CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS

ASC-ECU communicates with ETACS-ECU via CAN 
bus lines. 
This diagnosis code No.U1195 is set when the vari-
ant coding for ETACS-ECU has not been imple-
mented.
This diagnosis code No.U1197 is set when there is 
difference between the vehicle information from the 
ETACS-ECU and the vehicle information stored in 
the ASC-ECU.

PROBABLE CAUSES

Code No.C1195 is set

• Variant coding for ETACS-ECU has not been 

implemented.

• ASC-ECU malfunction

Code No.C1197 is set

• Malfunction of ETACS-ECU

• ETACS-ECU have been interchanged between 

two vehicles.

• ASC-ECU malfunction

• External noise interference

• ASC-ECU have been interchanged between two 

vehicles.

DIAGNOSTIC 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 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. U1195 or U1197 set?

YES : 

Go to Step 3.

NO : 

The procedure is complete.

STEP 3. M.U.T.-III other system diagnosis code
Use M.U.T.-III to check whether the 
ETACS-ECU-related or engine ECU-related diagno-
sis code is set or not.

Q: Is any diagnosis code set?

YES : 

Troubleshoot for the relevant diagnosis 

code.

NO : 

Go to Step 4.

STEP 4. Check ETACS coding data
Refer to GROUP 00 

− Coding List .

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 5.

STEP 5. ETACS-ECU variant coding
Perform the variant coding to the ETACS-ECU.

Q: Dose variant coding succeed?

YES : 

Go to Step 7.

NO : 

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

P.35C-95

), and then 

go to Step 7.

STEP 6. Check part number of ASC-ECU
Check the part number of ASC-ECU.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

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

P.35C-95

). Then go to 

Step 8.

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-65

STEP 7. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to the "OFF" position.
(3) Turn the ignition switch to the "ON" position.
(4) Turn the ignition switch to the "OFF" position.
(5) Turn the ignition switch to the "ON" position.
(6) Check that the ABS warning lamp goes out.

Q: Is the diagnosis code No.U1195 or U1197 set?

YES : 

Replace the hydraulic unit (ASC-ECU) 

(Refer to ). Then go to Step 8.

NO : 

The trouble can be an intermittent 
malfunction (Refer to GROUP 00 

− How to 

Use Troubleshooting/How to Cope with 
Intermittent Malfunctions ).

STEP 8. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to the "OFF" position.
(3) Turn the ignition switch to the "ON" position.
(4) Turn the ignition switch to the "OFF" position.
(5) Turn the ignition switch to the "ON" position.
(6) Check that the ABS warning lamp goes out.

Q: Is the diagnosis code No.U1195 or U1197 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

TROUBLE SYMPTOM CHART

M1355006900996

CAUTION

• ABS may operate in the following conditions without hard braking: Low mu road surface, 

high-speed turn, and bumpy road surface. When asking the customers, confirm that they 
have/have not encountered ABS operation in corresponding conditions.

• During ABS operation, the brake pedal is pulled forward gradually, and the noise occurs at the 

same time. This is because the brake line pressure varies intermittently to prevent the wheel lock, 
and not a system malfunction.

• During diagnosis, a diagnosis code associated with other system may be set when the ignition 

switch is turned on with connector(s) disconnected. On completion, confirm all systems for diag-
nosis code(s). If diagnosis code(s) are set, erase them all.

Trouble symptom

Inspection 
procedure 
number

Reference 
page

M.U.T.-III cannot communicate with the 
ABS/ASC system is impossible.

M.U.T.-III cannot communicate 
with all systems.

−

Refer to 
GROUP 54C 

− 

Troubleshooting 
.

M.U.T.-III cannot communicate 
only with ASC-ECU.

1

P.35C-66

ASC OFF lamp flashes at a rate of 2Hz.

2

P.35C-66

Brake warning lamp stays ON with the parking brake lever released (ABS 
warning lamp is OFF).

3

P.35C-67

ABS warning lamp does not illuminate when ignition switch is turned to the 
ON position (Engine stopped).

4

P.35C-69

Brake warning lamp does not illuminate when the ignition switch is turned to 
ON position (Engine stopped).

5

P.35C-70

ABS warning lamp stays ON after the engine is started.

6

P.35C-71

ASC warning lamp stays ON after the engine is started.

7

P.35C-72

ASC OFF lamp stays ON after the engine is started.

8

P.35C-73

The stability control/TCL system cannot be disabled when ASC OFF switch 
is pressed for 3 seconds or more to turn the system OFF.

9

P.35C-75

Abnormality in brake operation.

10

P.35C-75

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-66

SYMPTOM PROCEDURES

Inspection Procedure 1: M.U.T.-III communication with ABS/ASC system is impossible.

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.

• If the power is supplied with the earth circuit 

of CAN communication device open circuited, 
an electric potential abnormality may occur to 
the CAN bus lines.

• 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

When M.U.T.-III cannot communicate with the 
ABS/ASC system, the CAN bus lines, ASC-ECU 
power supply circuit system, earth, or ASC-ECU may 
be faulty.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• ASC-ECU malfunction

• Wrong routing of M.U.T.-III harness

• Abnormality in battery or alternator

• Abnormality in power supply voltage to ASC-ECU

• ECU malfunction of other system

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 : 

Check the power supply circuit, and repair if 

necessary (Refer to 

P.35C-77

).

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− CAN Bus Diagnostics Table ).

Inspection Procedure 2: ASC OFF lamp flashes at a rate of 2Hz.

OPERATION

When the ASC OFF lamp flashes at a rate of 2 Hz, 
the TCL control (brake control only) is prohibited.

COMMENTS ON TROUBLE SYMPTOM

This operation is performed for the following reasons 
and is not a malfunction.

ASC does not operate or faulty ASC operate.

11

P.35C-76

ASC-ECU power supply circuit system. 

12

P.35C-77

Steering wheel sensor power supply circuit system

13

P.35C-79

ABS/stability control/TCL operates too frequently.

14

P.35C-80

HSA (Hill Start Assist) does not work.

15

P.35C-82

HSA (Hill Start Assist) works on a flat road.

16

P.35C-84

The initial check sound of hydraulic unit is loud

17

P.35C-84

Trouble symptom

Inspection 
procedure 
number

Reference 
page