Mitsubishi Evolution X. Manual — part 357

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

MANUAL TRANSAXLE

22A-77

STEP 6. Scan tool service data
Check the following service data. (Refer to

P.22A-107

.)

• Item No. 26: Yaw rate sensor

• Item No. 29: Lateral G sensor

• Item No. 31: Longitudinal G sensor

• Item No. 76: G and yaw rate sensor high voltage abnormal-

ity flag

Q: Is the check result normal?

YES : Go to Step 7.
NO : Replace the G and yaw rate sensor. (Refer to

GROUP 35C

− G and Yaw Rate Sensor

P.35C-278

.)

Then go to Step 7.

STEP 7. Check whether the DTC is reset.
Q: Is DTC No. C2115 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-132

.) Then

go to Step 8.

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 8. Check whether the DTC is reset.
Q: Is DTC No. C2115 set?

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

DTC C2203: VIN not Recorded

CAUTION

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

an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.

• Whenever the ECU is replaced, ensure that

the CAN bus lines are normal.

.

OPERATION

AWC-ECU receives chassis number information
from the engine control module. (AWC-ECU receives
chassis number information from the engine control
module via CAN, and writes to AWC-ECU.))

.

DTC SET CONDITIONS

When the chassis number is not written.

.

PROBABLE CAUSES

• The CAN bus line is defective.

• Malfunction of engine control module

• VIN not written

• Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, 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

−

Troubleshooting

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

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MANUAL TRANSAXLE

22A-78

STEP 2. Scan tool diagnostic trouble code
Check the engine diagnostic trouble code. (Refer to GROUP
13A

− Troubleshooting

P.13A-44

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 3.

STEP 3. Check whether the DTC is reset.
Q: Is DTC No. C2203 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-132

.) Then

go to Step 4.

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

).

STEP 4. Check whether the DTC is reset.
Q: Is DTC No. C2203 set?

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

DTC C2204: G and Yaw Rate Sensor System (Internal Malfunction)

CAUTION

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

an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.

• Whenever the ECU is replaced, ensure that

the CAN bus lines are normal.

• Do not drop the G and yaw rate sensor or sub-

ject it to a shock.

• When G and yaw rate sensor is replaced, cali-

brate G and yaw rate sensor (refer to GROUP
35C

− On-vehicle Service

P.35C-266

), and ini-

tialize the lateral/longitudinal acceleration
correction amount stored in AWC-ECU. (Refer
to item No.10: Lateral acceleration correction
amount initialization, and No. 11: Longitudinal
acceleration correction amount initialization

P.22A-113

.)

.

OPERATION

AWC-ECU receives the self-diagnosis status of G
and yaw rate sensor.

.

DTC SET CONDITIONS

The code is set when abnormality is detected by the
self-diagnosis of the G and yaw rate sensor.

.

PROBABLE CAUSES

• Malfunction of G and yaw rate sensor

• Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, 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

−

Troubleshooting

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

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MANUAL TRANSAXLE

22A-79

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C2204 set?

YES : Go to Step 3.
NO : This diagnosis is complete.

STEP 3. Scan tool diagnostic trouble code
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting

P.35C-20

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 4.

STEP 4. Scan tool service data
Check the following service data. (Refer to

P.22A-107

.)

• Item No. 26: Yaw rate sensor

• Item No. 29: Lateral G sensor

• Item No. 31: Longitudinal G sensor

Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the G and yaw rate sensor. (Refer to

GROUP 35C

− G and Yaw Rate Sensor

P.35C-278

.)

Then go to Step 5.

STEP 5. Check whether the DTC is reset.
Q: Is DTC No. C2204 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-132

.) Then

go to Step 6.

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 6. Check whether the DTC is reset.
Q: Is DTC No. C2204 set?

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

DTC C2205: Steering Wheel Sensor System (Internal Malfunction)

CAUTION

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

an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.

• Whenever the ECU is replaced, ensure that

the CAN bus lines are normal.

• When the steering wheel sensor is replaced,

calibrate the steering wheel sensor (refer to
GROUP 35C

− On-vehicle Service

P.35C-267

),

and initialize the steering angle correction
amount stored in AWC-ECU. (Item No.09:

Steering angle correction amount initializa-
tion

P.22A-113

.)

.

OPERATION

AWC-ECU receives the self-diagnosis status of
steering wheel sensor.

.

DTC SET CONDITIONS

The code is set when abnormality is detected by the
self-diagnosis of the steering wheel sensor.

.

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

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MANUAL TRANSAXLE

22A-80

PROBABLE CAUSES

• Malfunction of steering wheel sensor

• Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, 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

−

Troubleshooting

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C2205 set?

YES : Go to Step 3.
NO : This diagnosis is complete.

STEP 3. Scan tool service data
Item 13: Steering wheel sensor (refer to

P.22A-107

.)

Q: Is the check result normal?

YES : Go to Step 4.
NO : Replace the steering wheel sensor. (Refer to GROUP

35C

− Steering Wheel Sensor

P.35C-279

.) Then go to

Step 5.

STEP 4. Check whether the DTC is reset.
Q: Is DTC No. C2205 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-132

.) Then

go to Step 5.

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 5. Check whether the DTC is reset.
Q: Is DTC No. C2205 set?

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

DTC U0001: Bus Off

CAUTION

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

an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.

• Whenever the ECU is replaced, ensure that

the CAN bus lines are normal.

.

DTC SET CONDITIONS

The code is set when AWC-ECU ceases (bus-off).

.

PROBABLE CAUSES

• The CAN bus line is defective.

• Malfunction of AWC-ECU

• ECU malfunction of other system