Mitsubishi Outlander GS45X. Manual - part 1337

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-71

STEP 7. Check whether the DTC is reset.
Q: Is the DTC U0401 set?

YES : Diagnose again from Step 1.
NO :  The procedure is complete.

DTC U0415: ABS CAN data error

CAUTION

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

an incorrect DTC may be set. Prior to this 
diagnosis, always diagnose the CAN bus 
lines.

• Before replacing the ECU, ensure that the 

communication circuit is normal.

.

OPERATION

AWD-ECU receives the data (such as wheel speed 
sensor signal) from ABS/ASC-ECU via the CAN bus 
lines. If it detects malfunction of the wheel speed sig-
nal, it interrupts the system.

.

DTC SET CONDITIONS

If the following conditions are met when the system 
is in operation (always), AWD-ECU gradually 
switches the control from AWD to FWD, flashes the 
AWD/LOCK indicators alternately, and sets the DTC 
U0415.

• IG1 voltage: 10 V or more

• If the received wheel speed of one or more 

wheels reaches or exceeds the threshold value of 
4000 r/min, or the received wheel speed of one or 
more wheels is SNA.
NOTE: SNA (Signal not available)

.

TROUBLESHOOTING HINTS

Current trouble

• Wiring harness or connector failure between 

ABS/ASC-ECU and the stoplight switch

• Malfunction of the ABS sensor

• Malfunction of the stoplight switch

• ABS/ASC-ECU malfunction

• AWD-ECU malfunction

Past trouble

• Refer to "How to treat past trouble" (GROUP 00 − 

How to Use Troubleshooting/How to Treat Past 
Trouble 

P.00-17

) for proceeding the diagnostics.

DIAGNOSIS

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

• MB991824: Vehicle Communication Interface

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C 

− 

Troubleshooting/CAN Bus Diagnostics Table 

P.54C-17

). Then go to Step 2.

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-72

STEP 2. Scan tool MB991958 data list
Check the following data list (Refer to 

P.27C-90

).

• Item 07: CAN system (ABS/ASC)

• Item 16: FL wheel speed sensor

• Item 17: FR wheel speed sensor

• Item 18: RL wheel speed sensor

• Item 19: RR wheel speed sensor

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Troubleshoot the ABS system (Refer to GROUP 35B 

− Troubleshooting/DTC Chart 

P.35B-15

 <Vehicles 

with ABS>), the ASC system (Refer to GROUP 35C 

− 

Troubleshooting/DTC Chart 

P.35C-18

 <Vehicles with 

ASC>). Then go to Step 3 .

STEP 3. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to 

the "ON" position.

(3) Check if the DTC is set.
Q: Is the DTC U0415 set?

YES : Replace AWD-ECU (Refer to 

P.27C-95

). Then go to 

Step 4   .

NO :  The procedure is complete.

STEP 4. Check whether the DTC is reset.
Q: Is the DTC U0415 set?

YES : Diagnose again from Step 1.
NO :  The procedure is complete.

DTC U113C: Wheel speed sensor data error

CAUTION

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

an incorrect DTC may be set. Prior to this 
diagnosis, always diagnose the CAN bus 
lines.

• Before replacing the ECU, ensure that the 

communication circuit is normal.

.

OPERATION

AWD-ECU receives the data (such as ABS sensor 
signal, ABS operation signal) via the CAN bus lines. 
If it cannot receive such data, it interrupts the system.

.

DTC SET CONDITIONS

If the following conditions are met when the system 
is activated, AWD-ECU gradually switches the con-
trol from AWD to FWD, flashes the AWD/LOCK indi-
cators alternately, and sets the DTC U113C.

• IG1 voltage: 8 V or more

• ABS signal (such as wheel speed signal) cannot 

be received.

• DTC U0121 ABS CAN time-out is not detected.

.

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-73

TROUBLESHOOTING HINTS

Current trouble

• Wiring harness or connector failure between 

ABS/ASC-ECU and the stoplight switch

• Malfunction of the wheel speed sensor

• Malfunction of the stoplight switch

• ABS/ASC-ECU malfunction

• AWD-ECU malfunction

Past trouble

• Refer to "How to treat past trouble" (GROUP 00 − 

How to Use Troubleshooting/How to Treat Past 
Trouble 

P.00-17

) for proceeding the diagnostics. 

Diagnose mainly wiring harness or connector fail-
ure in the CAN bus lines between ABS/ASC-ECU 
and each wheel speed sensor, or between 
ABS/ASC-ECU and the stoplight switch.

DIAGNOSIS

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

• MB991824: Vehicle Communication Interface

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C 

− 

Troubleshooting/CAN Bus Diagnostics Table 

P.54C-17

). Then go to Step 2.

STEP 2. Scan tool MB991958 data list
Check the following data list (Refer to 

P.27C-90

).

• Item 07: CAN system (ABS/ASC)

• Item 16: FL wheel speed sensor

• Item 17: FR wheel speed sensor

• Item 18: RL wheel speed sensor

• Item 19: RR wheel speed sensor

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Troubleshoot the ABS system (Refer to GROUP 35B 

− Troubleshooting/DTC Chart 

P.35B-15

<Vehicles with 

ABS>), the ASC system (Refer to GROUP 35C 

− 

Troubleshooting/DTC Chart 

P.35C-18

 <Vehicles with 

ASC>). Then go to Step 3.

DIAGNOSIS

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ELECTRONIC CONTROL AWD

27C-74

STEP 3. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to 

the "ON" position.

(3) Check if the DTC is set.
Q: Is the DTC U113C set?

YES : Replace AWD-ECU (Refer to 

P.27C-95

). Then go to 

Step 4 .

NO :  A poor connection, open circuit or other intermittent 

malfunction in the CAN bus lines between 
ABS/ASC-ECU and each wheel speed sensor, or 
between ABS/ASC-ECU and the stoplight switch is 
suspected. (Refer to GROUP 00 

− How to Use 

Troubleshooting/How to Cope with Intermittent 
Malfunctions 

P.00-15

).

STEP 4. Check whether the DTC is reset.
Q: Is the DTC U113C set?

YES : Diagnose again from Step 1.
NO :  The procedure is complete.

DTC U1415 Variant coding not implemented

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 (Refer to GROUP 54C, CAN Bus 
Diagnostics Table 

P.54C-17

).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

• When the DTC U1415 is set in AWD-ECU, the 

diagnostic trouble code may also be set in 
ETACS-ECU. When the diagnostic trouble 
code is set in ETACS-ECU, carry out the diag-
nosis of the diagnostic trouble code for 
ETACS-ECU first.

.

OPERATION

AWD-ECU receives the vehicle information stored in 
the ETACS-ECU via CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

This diagnostic trouble code is set when the variant 
coding for ETACS-ECU has not been implemented.

.

PROBABLE CAUSES

Current trouble

• AWD-ECU malfunction

• Variant coding for ETACS-ECU has not been 

implemented.

• Wiring harness or connector failure in the CAN 

bus lines between ETACS-ECU and AWD-ECU

Past trouble
AWD-ECU DTC U1415 has not been erased.