Mitsubishi Outlander GS45X. Manual — part 1716

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-169

STEP 2. Check whether the diagnostic trouble code is
reset.
Q: Is the relevant wheel speed sensor diagnostic trouble

code No.C1014 <FL>, C101F <FR>, C102A <RL>, or
C1035 <RR> set?
YES : Go to Step 3.
NO : This diagnosis is complete.

STEP 3. M.U.T.-III diagnostic trouble code.
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting

P.35C-18

Q: Is the diagnostic trouble code set?

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

STEP 4. M.U.T.-III data list.
Check the data list of the relevant wheel speed sensor. (Refer
to

P.23C-254

• Item No.21: Wheel speed sensor <FL>

• Item No.22: Wheel speed sensor <FR>

• Item No.23: Wheel speed sensor <RL>

• Item No.24: Wheel speed sensor <RR>

Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

NO : Replace the AWC-ECU. (Refer to

P.23C-295

Code No.C1078: Tire Turning 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.

OPERATION

AWC-ECU receives the wheel speed data from
ASC-ECU via the CAN communication.

DIAGNOSTIC TROUBLE CODE SET
CONDITIONS

The wheel speed is observed when the vehicle is
driven straight ahead with the steering angle in the
neutral position and if the wheel speed difference
which is more than the specified value is continu-
ously detected, this code is set.

PROBABLE CAUSES

• Tire with incorrect diameter equipped

• Spare tire installed

• Improper tire pressure

• Malfunction of ASC-ECU

• Malfunction of AWC-ECU

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-170

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use scan tool to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 3.
NO : Repair the CAN bus line (Refer to GROUP 54C

−

Troubleshooting

P.54C-17

). After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1078 set?

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

STEP 3. Check the tires
Check that the wheels/tires with the identical size are installed,
and that each tire pressure is within the value specified on the
tire pressure label.
Q: Is the check result normal?

YES : Go to Step 4.
NO : Install the wheels/tires with the identical size, or adjust

the tire pressure. Then go to Step 5.

STEP 4. M.U.T.-III diagnostic trouble code.
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting

P.35C-18

Q: Is the diagnostic trouble code set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 5.

STEP 5. M.U.T.-III data list.
Check the following data list. (Refer to

P.23C-254

• Item No.21: Wheel speed sensor <FL>

• Item No.22: Wheel speed sensor <FR>

• Item No.23: Wheel speed sensor <RL>

• Item No.24: Wheel speed sensor <RR>

Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

NO : Replace the AWC-ECU. (Refer to

P.23C-295

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-171

Code No.C1219: Steering Wheel Sensor System (Faulty Signal)

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-283

and reset the steering wheel sensor correc-
tion amount stored in the AWC-ECU. (Item No.
1: SAS adjusted value

P.23C-256

• 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-282

)

OPERATION

AWC-ECU receives steering wheel data from the
steering wheel sensor via CAN communication.

DIAGNOSTIC TROUBLE CODE SET
CONDITIONS

This diagnostic trouble code is set when the abnor-
mality below is detected:

• The tolerance of neutral position of steering

wheel sensor exceeds the specified range.

• Abnormality in steering wheel sensor output

value

• Incorrect installation is detected by the initial

check of the steering wheel sensor signal.

• Abnormality is detected by a comparison of out-

put value from the steering wheel sensor with the
output values from wheel speed sensor and G
and yaw rate sensor.

PROBABLE CAUSES

• Improper installation of steering wheel sensor

• Malfunction of steering wheel sensor

• Malfunction of G and yaw rate sensor

• Malfunction of wheel speed sensor

• Malfunction of AWC-ECU

• Vehicle straight-ahead position and steering

wheel neutral position is not matched.

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use scan tool to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 3.
NO : Repair the CAN bus lines. (Refer to GROUP 54C

−

Troubleshooting

P.54C-17

). After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1219 set?

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

STEP 3. M.U.T.-III diagnostic trouble code.
Q: Is diagnostic trouble code No.C2205 set?

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

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-172

STEP 4. M.U.T.-III diagnostic trouble code.
Check if the wheel speed sensor-related, G and yaw rate sen-
sor-related, or steering wheel sensor-related diagnostic trouble
code is set.
Q: Is the diagnostic trouble code set?

YES : Carry out the appropriate troubleshooting. Then go to

Step 9.

NO : Go to Step 5.

STEP 5. Check of steering wheel sensor installation status
Check that the steering wheel sensor is installed correctly.
(Refer to GROUP 35C

− Steering Wheel Sensor

P.35C-291

Q: Is the check result normal?

YES : Go to Step 6.
NO : Install the steering wheel sensor correctly. Then go to

Step 6.

STEP 6. Wheel alignment check
Q: Is the check result normal?

YES : After checking the wheel alignment, calibrate the

steering wheel sensor (Refer to GROUP 35C