Mitsubishi Outlander GS45X. Manual — part 446

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-211

STEP 2. Using scan tool MB991958, read the ETACS-ECU
DTC.
Use scan tool to check that the diagnostic trouble code B222C
is set in the ETACS-ECU.
Q: Is any DTC set?

YES : Troubleshoot the relevant diagnostic Trouble code,

and then go to Step 4.

NO : Go to Step 3.

STEP 3. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Ignition switch "LOCK" (OFF)
(3) Ignition switch "ON"
(4) Check that the ABS warning light is extinguished.
Q: Is DTC U1415 set?

YES : Replace the hydraulic unit (ASC-ECU) (Refer to

P.35C-287

), and then go to Step 4.

NO : Intermittent malfunction (Refer to GROUP 00

− How

to Use Troubleshooting/How to Cope with Intermittent
Malfunctions

P.00-15

).

STEP 4. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Ignition switch "LOCK" (OFF)
(3) Ignition switch "ON"
(4) Check that the ABS warning light is extinguished.
Q: Is DTC U1415 set?

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

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-212

DTC U1417: Variant coding value invalid (includes faulty installation)

CAUTION

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

rect diagnostic trouble code may be set. Prior to this
diagnosis, diagnose the CAN bus lines (Refer to
GROUP 54C

− CAN Bus Line Diagnostic Flow

P.54C-10

).

• If diagnostic trouble code No.U1417 is set in ASC-ECU,

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

• Before replacing the ECU, ensure that the communica-

tion circuit is normal.

• When diagnostic trouble code No.U1417 is set in

ASC-ECU, the diagnostic trouble code may also be set
in ETACS-ECU. When the diagnostic trouble code is set
in ETACS-ECU, carry out the diagnosis 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 steer-
ing wheel sensor, the G and yaw rate sensor and brake
fluid pressure sensor (Refer to

P.35C-282

,

P.35C-283

and

P.35C-284

).

.

CIRCUIT OPERATION

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

.

DTC SET CONDITIONS

ASC-ECU communicates with ETACS-ECU via CAN bus lines.
This diagnostic trouble code is set when the vehicle information
received from the ETACS-ECU is invalid.

.

PROBABLE CAUSES

• ETACS-ECU malfunction

• Engine control module malfunction

• ETACS-ECUs have been interchanged between two vehi-

cles.

• ASC-ECU malfunction

• External noise interference

• ASC-ECUs have been interchanged between two vehicles.

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

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-213

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
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 U1417 set?

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

STEP 3. Using scan tool MB991958, other system DTC
Use scan tool to check whether any diagnostic trouble code
related to vehicles information is set or not by the ETACS-ECU
or engine control module.
Q: Is any DTC set?

YES : Troubleshoot for the relevant diagnostic trouble code.
NO : Go to Step 4.

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-214

STEP 4. ETACS-ECU coding data check
Refer to GROUP 00

− Precautions before Service/Coding List

P.00-44

.

Vehicle line

OK: OUTLANDER

Transmission

OK (A/T): 6AT
OK (CVT): CVT

Engine type

OK (2.4L engine): 2.4L D4 MPI VVT
OK (3.0L engine): 3.0L S4 MIVEC

Engine power

OK: Normal

Chassis type for A.S.C.

OK : Type 2

Final drive

OK (FWD): Front Drive
OK (AWD): 4WD FF Base

Front differential

OK (except S-AWC): Open
OK (S-AWC): ELSD

Transfer

OK (FWD): FWD
OK (AWD): ECC

SAS

OK: Present

4WD/AWD

OK (FWD): Not present
OK (AWD): Present

TCM

OK: Present

ACDAYC

OK: Not present

Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the ETACS-ECU (Refer to GROUP 54A

−

ETACS-ECU

P.54A-825

), and then go to Step 7.

STEP 5. Engine control module coding data check
Refer to GROUP 00

− Precautions before Service/Coding List

P.00-44

.

Q: Is the check result normal?

YES : Go to Step 6.
NO : Replace the engine control module <Refer to GROUP

13A

− ECM

P.13A-887

(2.4L engine) or Refer to

GROUP 13B

− ECM

P.13B-903

(3.0L engine)>, and

then go to Step 7.