Mitsubishi Outlander GS45X. Manual — part 1733
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-237
Code No.U1427: Wheel Speed Sensor Data 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 communicates with the ASC-ECU via the
CAN bus lines.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
The code is set when abnormality is detected in the
wheel speed sensor signal received from the
ASC-ECU.
.
PROBABLE CAUSES
• Malfunction of the CAN bus line
• Malfunction of the wheel speed sensor
• Malfunction of ASC-ECU
• Malfunction of AWC-ECU
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 2.
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
).
STEP 2. M.U.T.-III diagnostic trouble code.
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting
Q: Is the diagnostic trouble code set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. M.U.T.-III data list.
Check the data list of the relevant wheel speed sensor. (Refer
to
• 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
).
NO : Go to Step 4.
STEP 4. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.U1427 set?
YES : Replace the AWC-ECU. (Refer to
go to Step 5.
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
).
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-238
STEP 5. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.U1427 set?
YES : Return to Step 1.
NO : This diagnosis is complete.
Code No.U1428: G and Yaw Rate Sensor Data 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
.
OPERATION
AWC-ECU receives the G and yaw rate sensor data
from ASC-ECU via the CAN communication.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
The code is set when abnormality is detected in the
G and yaw rate sensor signal received from the
ASC-ECU.
.
PROBABLE CAUSES
• Malfunction of G and yaw rate sensor
• Malfunction of G and yaw rate sensor power sup-
ply
• Damaged connector(s)
• Malfunction of the CAN bus line
• Malfunction of AWC-ECU
• Malfunction of ASC-ECU
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 2.
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
).
STEP 2. M.U.T.-III diagnostic trouble code.
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting
Q: Is the diagnostic trouble code set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. M.U.T.-III diagnostic trouble code.
Check if the AWC diagnostic trouble code No.C123C, C1242 is
set. (Refer to
Q: Is the check result normal?
YES : Perform the relevant troubleshooting.
NO : Go to Step 4.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-239
STEP 4. M.U.T.-III data list.
Check the data list below. (Refer to
).
• Item No.25: Yaw rate sensor
• Item No.26: Lateral G sensor
• Item No.27: 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
Then go to Step 6.
STEP 5. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.U1428 set?
YES : Replace the AWC-ECU. (Refer to
go to Step 6.
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
).
STEP 6. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.U1428 set?
YES : Return to Step 1.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-240
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Communication between scan tool and AWC-ECU cannot be
established
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect trouble symptom may occur.
Prior to this diagnosis, always diagnose the
CAN bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
SYMPTOMS
CAN bus line, AWC-ECU power supply circuit, or
AWC-ECU may have a problem.
.
PROBABLE CAUSES
• Wrong M.U.T.-III wiring harness
• The CAN bus line is defective.
• AWC-ECU power supply circuit malfunction
• Malfunction of AWC-ECU
• ECU malfunction of other system
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 : Check/repair the AWC-ECU power supply circuit.
(Refer to
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
).
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст