Mitsubishi Outlander GS45X. Manual — part 431

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-151

STEP 4. Connector check: ASC-ECU connector
Q: Is the check result normal?

YES : Go to Step 5.
NO : Repair the defective connector. Then go to Step 5.

STEP 5. 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 6.
NO : Replace the ETACS-ECU (Refer to GROUP 54A

−

ETACS-ECU

P.54A-825

), and then go to Step 7.

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-152

STEP 6. Check whether the diagnostic trouble code is
reset.
Erase the DTC.
Q: Is DTC C1290 set?

YES : Replace the hydraulic unit (integrated with

ASC-ECU). Then go to Step 7.

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

P.00-15

).

STEP 7. Check whether the diagnostic trouble code is
reset.
Erase the DTC.
Q: Is DTC C1290 set?

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

DTC C2203: VIN not recorded

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

).

• When other diagnostic trouble code for ASC-ECU is

set, troubleshoot that diagnostic trouble code first.

• 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 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

).

.

OPERATION

ASC-ECU receives vehicle information from the engine control
module and stores it.

.

DTC SET CONDITIONS

This diagnostic trouble code is set when ASC-ECU cannot
receive the vehicle information from the engine control module.

.

PROBABLE CAUSES

• Malfunction of the CAN bus

• Engine control module malfunction

• ASC-ECU malfunction

DIAGNOSIS

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-153

• When the ignition switch is turned to the "ON" position for

the first time after the ASC-ECU is replaced.

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

STEP 1. Using scan tool MB991958, diagnose the CAN bus
lines.
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. Diagnostic trouble code recheck after resetting
CAN bus lines
(1) Ignition switch "LOCK" (OFF)
(2) Ignition switch "ON"
Q: Is DTC C2203 set?

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

STEP 3. M.U.T.-III diagnostic trouble code
Check that the engine control module sets a diagnostic trouble
code.
Q: Is any DTC set?

YES : Troubleshoot the engine control module diagnostic

trouble code <Refer to GROUP 13A

− Diagnostic

Trouble Code Chart

P.13A-49

(2.4L engine) or

GROUP 13B

− Diagnostic trouble code chart

P.13B-50

(3.0L engine)>, and then go to Step 5.

NO : Go to Step 4.

STEP 4. Check whether the diagnostic trouble code is
reset.
(1) Erase the DTC.
(2) Ignition switch: "LOCK" (OFF) position
(3) Ignition switch: "ON" position
Q: Is DTC C2203 set?

YES : Replace the hydraulic unit (integrated with ASC-ECU)

(Refer to

P.35C-287

), and then go to Step 5.

NO : If a trouble is solved, it is determined that there is an

intermittent malfunction such as poor engaged
connector(s) or open circuit (Refer to GROUP 00

−

How to Use Troubleshooting/How to Cope with
Intermittent Malfunctions

P.00-15

).

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-154

STEP 5. Check whether the diagnostic trouble code is
reset.
(1) Erase the DTC.
(2) Ignition switch: "LOCK" (OFF) position
(3) Ignition switch: "ON" position
Q: Is DTC C2203 set?

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

DTC C2206: Re-execution of variant coding

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 the diagnostic trouble code C2206 is set in ASC-ECU,

always diagnose the CAN bus line. 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 the diagnostic trouble code C2206 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 diagnos-
tic trouble 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

).

.

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 if the vehicle information
stored in ETACS-ECU varies from the one stored when the
ignition switch was last turned on.

.

PROBABLE CAUSES

• ETACS-ECU or ASC-ECU which was equipped with other

vehicle is used.

• Malfunction of ETACS-ECU