Mitsubishi Outlander GS45X. Manual — part 429

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-143

DTC C2200: Abnormality in ASC-ECU

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

).

• 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 controls ASC by calculating the data sent from the
wheel speed sensor, the steering wheel sensor, and the G and
yaw rate sensor.

.

DTC SET CONDITIONS

This diagnostic trouble code is set when ASC-ECU has mal-
function.

.

PROBABLE CAUSES

ASC-ECU malfunction

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. M.U.T.-III CAN bus diagnostics
Use scan tool 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

P.54C-17

.) On

completion, go to Step 3.

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-144

STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines
Erase the DTC.
Q: Is DTC C2200 set?

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

(Refer to

P.35C-287

). Then go to Step 3.

NO : Intermittent malfunction (Refer to GROUP 00

− How

to Use Troubleshooting/How to Cope with Intermittent
Malfunctions

P.00-15

).

STEP 3. Diagnostic trouble code recheck after resetting
CAN bus lines
Erase the DTC.
Q: Is DTC C2200 set?

YES : Return to Step 1.
NO : This diagnosis is complete.

DTC C2101: Abnormality in battery voltage (high voltage)

CAUTION

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

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

− CAN Bus

Line Diagnostic Flow

P.54C-10

).

• 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.42C-10

,

P.35C-283

and

P.35C-284

).

.

OPERATION

The ASC-ECU is energized by the valve power supply circuit
(terminal No.32). When the power is supplied from the ignition
switch (IG1) to the IG1 relay in ETACS-ECU, IG1 relay is
turned on. At this time, the valve power supply circuit (terminal
No.4) energizes the ASC-ECU.

.

DTC SET CONDITIONS

This DTC is set when the ASC-ECU power supply voltage is
more than 18.0

± 1.0 V.

.

PROBABLE CAUSES

• Battery failure

• ASC-ECU malfunction

• Charging system failed

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-145

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. DTC recheck after resetting CAN bus lines
Q: Is DTC C2101 set?

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

STEP 3. Battery check
Refer to GROUP 54A

− Battery Test

P.54A-9

.

Q: Is the battery in good condition?

YES : Go to Step 5.
NO : Charge or replace the battery. Then go to Step 4.

STEP 4. Charging system check
Refer to GROUP 16

− On−vehicle Service/Output Current Test

P.16-9

.

Q: Is the check result normal?

YES : Go to Step 5.
NO : Repair or replace the charging system component(s).

STEP 5. Check whether the DTC is reset.
Erase the DTC.
Q: Is DTC C2101 set?

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

(Refer to

P.35C-287

). Then go to Step 6.

NO : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to Use Troubleshooting/How to

Cope with Intermittent Malfunctions

P.00-15

).

STEP 6. Check whether the DTC is reset.
Erase the DTC.
Q: Is DTC C2101 set?

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

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-146

DTC C1395: Brake fluid filling not completed

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

).

• 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

).

.

DTC SET CONDITIONS

This diagnostic trouble code is set when the brake fluid is not
filled in the hydraulic unit.

.

PROBABLE CAUSES

• Different hydraulic unit (For delivery to factory)

• ASC-ECU malfunction

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: 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 2.
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. Check whether the DTC is reset.
Erase the DTC.
Q: Is DTC C1395 set?

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

(Refer to

P.35C-287

).

NO : The procedure is complete.