Mitsubishi Outlander GS45X. Manual — part 1722
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-193
Code No.C161F: AWC actuator protection 1
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
The AWC-ECU calculates the electronic control cou-
pling (front) temperature by the information of the
electronic control coupling (front) control amount,
outside temperate, etc. If it is detected that the elec-
tronic control coupling (Front) temperature becomes
extremely high, the high fluid temperature warning is
displayed on the warning indicator.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
This diagnostic trouble code is set when the control
is suspended to protect the electronic control cou-
pling (front).
.
PROBABLE CAUSES
• Electronic control coupling (front) protection con-
trol status
• Severe driving
• Electronic control coupling (front) failure (clutch
slippage, etc.)
• Outside temperature signal failure
• Wheel speed signal failure
• Engine-related failure (engine speed signal fail-
ure)
• Ignition off time signal failure
DIAGNOSTIC PROCEDURE
STEP 1. Check whether the diagnostic trouble code is
reset.
(1) To release the electronic control coupling (front) protection
control, leave the vehicle for 15 minutes or longer after the
high fluid temperature warning on the warning indicator
disappears.
(2) Erase the diagnostic trouble code.
(3) Carry out the test drive.
NOTE: Do not carry out the severe test drive.
(4) Check if the diagnostic trouble code is set.
Q: Is diagnostic trouble code No.C161F set?
YES : Go to Step 2.
NO : This diagnosis is complete.
STEP 2. 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 4.
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
). After repairing the CAN
bus line, go to Step 3.
STEP 3. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C161F set?
YES : Go to Step 4.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-194
STEP 4. M.U.T.-III data list
Item 12: Engine speed (Refer to
).
Q: Is the check result normal?
YES : Go to Step 5.
NO : Perform the troubleshooting for the engine control
system. (Refer to GROUP 13B
− Troubleshooting
).
STEP 5. M.U.T.-III data list
Check the following data list. (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 : Go to Step 6.
NO : Perform the troubleshooting for the ASC. (Refer to
GROUP 35C
− Troubleshooting
STEP 6. M.U.T.-III data list
Check the following data list. (Refer to
).
• Item No.34: Ambient temperature (CAN input)
• Item No.35: Ignition off time (CAN input)
Q: Is the check result normal?
YES : Go to Step 7.
NO : Perform the troubleshooting for the ETACS. (Refer to
GROUP 54A
− ETACS, Troubleshooting
STEP 7. Check of the electronic control coupling (Front)
Refer to
.
Q: Is the check result normal?
YES : Go to Step 8.
NO : Replace the transfer assembly (Refer to
).
STEP 8. Check whether the diagnostic trouble code is
reset.
(1) To release the electronic control coupling (front) protection
control, leave the vehicle for 15 minutes or longer after the
high fluid temperature warning on the warning indicator
disappears.
(2) Erase the diagnostic trouble code.
(3) Carry out the test drive.
NOTE: Do not carry out the severe test drive.
(4) Check if the diagnostic trouble code is set.
Q: Is diagnostic trouble code No.C161F set?
YES : Replace the AWC-ECU. (Refer to
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-195
Code No.C1621: AWC actuator protection 2
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
The AWC-ECU calculates the electronic control cou-
pling (center) temperature by the information of the
electronic control coupling (center) control amount,
outside temperate, etc. If it is detected that the elec-
tronic control coupling (center) temperature becomes
extremely high, the high fluid temperature warning is
displayed on the warning indicator.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
This diagnostic trouble code is set when the control
is suspended to protect the electronic control cou-
pling (center).
.
PROBABLE CAUSES
• Electronic control coupling (center) protection
control status
• Severe driving
• Electronic control coupling (center) failure (clutch
slippage, etc.)
• Outside temperature signal failure
• Wheel speed signal failure
• Engine-related failure (engine speed signal fail-
ure)
• Ignition off time signal failure
DIAGNOSTIC PROCEDURE
STEP 1. Check whether the diagnostic trouble code is
reset.
(1) To release the electronic control coupling (center) protection
control, leave the vehicle for 15 minutes or longer after the
high fluid temperature warning on the warning indicator
disappears.
(2) Erase the diagnostic trouble code.
(3) Carry out the test drive.
NOTE: Do not carry out the severe test drive.
(4) Check if the diagnostic trouble code is set.
Q: Is diagnostic trouble code No.C1621 set?
YES : Go to Step 2.
NO : This diagnosis is complete.
STEP 2. 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 4.
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
). After repairing the CAN
bus line, go to Step 3.
STEP 3. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1621 set?
YES : Go to Step 4.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-196
STEP 4. M.U.T.-III data list
Item 12: Engine speed (Refer to
).
Q: Is the check result normal?
YES : Go to Step 5.
NO : Perform the troubleshooting for the engine. (Refer to
GROUP 13B
− Troubleshooting
STEP 5. M.U.T.-III data list
Check the following data list. (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 : Go to Step 6.
NO : Perform the troubleshooting for the ASC. (Refer to
GROUP 35C
− Troubleshooting
STEP 6. M.U.T.-III data list
Check the following data list. (Refer to
).
• Item No.34: Ambient temperature (CAN input)
• Item No.35: Ignition off time (CAN input)
Q: Is the check result normal?
YES : Go to Step 7.
NO : Perform the troubleshooting for the ETACS. (Refer to
GROUP 54A
− ETACS, Troubleshooting
STEP 7. Check of the electronic control coupling (center)
Refer to GROUP 27C
− On-vehicle Service
Q: Is the check result normal?
YES : Go to Step 8.
NO : Replace the electronic control coupling (center).
(Refer to GROUP 27C
− Electronic Control Coupling
).
STEP 8. Check whether the diagnostic trouble code is
reset.
(1) To release the electronic control coupling (center) protection
control, leave the vehicle for 15 minutes or longer after the
high fluid temperature warning on the warning indicator
disappears.
(2) Erase the diagnostic trouble code.
(3) Carry out the test drive.
NOTE: Do not carry out the severe test drive.
(4) Check if the diagnostic trouble code is set.
Q: Is diagnostic trouble code No.C161F set?
YES : Replace the AWC-ECU. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
).
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