Mitsubishi Outlander (2013+). Manual - part 488

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-23

STEP 3. M.U.T.-III data list
Check the following service data 

P.37-32

.

• Item No. 08: Vehicle speed

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Perform troubleshooting for engine-ECU 
(Refer to GROUP 13A 

− Troubleshooting . 

Then go to Step 4.

STEP 4. Check whether the diagnosis code is 
reset
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1564 set?

YES : 

Replace the EPS-ECU (Refer to 

P.37-51

). 

Then go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 5. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1564 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No.C1565 Engine revolution data invalid

CAUTION

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

an incorrect diagnosis code may be set. Prior 
to this diagnosis, diagnose the CAN bus lines 
(Refer to GROUP 54C, CAN Bus Diagnostics 
Table).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

OPERATION

EPS-ECU receives engine revolution signal from the 
engine-ECU.

FUNCTION

The engine speed signal is sent to the EPS-ECU for 
motor control.

TROUBLE JUDGEMENT

Check Conditions

• The power supply circuit system diagnosis code 

(No. C1540, C1541) is not set.

• The engine circuit system diagnosis code is not 

set.

Judgement Criterion
If the microcomputer receives abnormal engine 
speed signal from the engine-ECU consecutively 
twice, it determines that the engine speed calculation 
system is defective.

Fail Safe, Back Up Function
The EPS-ECU displays the electric power steering 
warning symbol, and stores diagnosis code No. 
C1565 to limit the power assistance.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the EPS-ECU

• Malfunction of the engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to 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 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting 
CAN bus lines
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1565 set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III data list
Check the following service data 

P.37-32

.

• Item No. 07: Engine speed

Q: Is the check result normal?

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-24

YES : 

Go to Step 5

NO : 

Perform troubleshooting for engine-ECU 
(Refer to GROUP 13A 

− 

Troubleshooting/Inspection Chart for 
Diagnosis code . Then go to Step 4.

STEP 4. Check whether the diagnosis code is 
reset
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1565 set?

YES : 

Replace the EPS-ECU (Refer to 

P.37-51

). 

Then go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 5. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1565 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No.C1566 Invalid data received from AWC

CAUTION

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

an incorrect diagnosis code may be set. Prior 
to this diagnosis, diagnose the CAN bus lines 
(Refer to GROUP 54C, CAN Bus Diagnostics 
Table).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

OPERATION

An additional torque signal is sent from the 
4WD-ECU to the EPS-ECU.

FUNCTION

The additional torque signal is sent to the EPS-ECU 
in order to control the motor.

TROUBLE JUDGEMENT

Check Conditions

• The power supply circuit system diagnosis code 

(No. C1540, C1541) is not set.

• The AWC circuit system diagnosis code is not 

set.

Judgement Criterion
If the microcomputer receives abnormal additional 
torque signal from the 4WD-ECU consecutively 
twice, it determines that the AWC system is defec-
tive.

Fail Safe, Back Up Function
The EPS-ECU stores diagnosis code No. C1566.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the EPS-ECU

• Malfunction of the 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to 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 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting 
CAN bus lines
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1566 set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III data list
Check the following service data 

P.37-32

.

• Item No. 09: Add torque indication status

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Perform troubleshooting for 4WD-ECU 
(Refer to GROUP 27C 

− 

Troubleshooting/Inspection Chart for 
Diagnosis code . Then go to Step 4.

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-25

STEP 4. Check whether the diagnosis code is 
reset
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1566 set?

YES : 

Replace the EPS-ECU (Refer to 

P.37-51

). 

Then go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction ).

STEP 5. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1566 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. C1657 Implausible coding data

CAUTION

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

an incorrect diagnosis code may be set. Prior 
to this diagnosis, diagnose the CAN bus lines 
(Refer to GROUP 54C, CAN Bus Diagnostics 
Table).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

OPERATION

EPS-ECU receives variant coding data from the 
ETACS-ECU.

FUNCTION

The coding data is sent to the EPS-ECU for motor 
control.

TROUBLE JUDGEMENT

Check Conditions

• The power supply circuit system diagnosis code 

(No. C1540, C1541) is not set.

• The ETACS circuit system diagnosis code is not 

set.

Judgement Criterion

• The coding data from the ETACS-ECU are not 

matched twice consecutively.

• The abnormal coding data is sent from the 

ETACS-ECU, and the microcomputer determines 
that there is a problem in the system.

Fail Safe, Back Up Function
The EPS-ECU stores diagnosis code No. C1657.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the EPS-ECU

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to 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 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 2

STEP 2. Diagnosis code recheck after resetting 
CAN bus lines
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1657 set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III other system diagnosis code
Use M.U.T.-III to check whether the 
ETACS-ECU-related or engine ECU-related diagno-
sis code is set or not.

Q: Is any diagnosis code set?

YES : 

Troubleshoot for the relevant diagnosis 

code.

NO : 

Go to Step 4

STEP 4. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-26

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1657 set?

YES : 

Replace the EPS-ECU (Refer to 

P.37-51

). 

Then go to Step 5.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunction .

STEP 5. Check whether the diagnosis code is 
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes C1657 set?

YES : 

Return to Step 1.

NO : 

This diagnosis is complete.

Code No. U0100 Engine CAN timeout

 

Code No. U0114 4WD CAN timeout

 

Code No. U0141 ETACS CAN timeout

CAUTION

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

an incorrect diagnosis code may be set. Prior 
to this diagnosis, diagnose the CAN bus lines 
(Refer to GROUP 54C, CAN Bus Diagnostics 
Table).

• Whenever ECU is replaced, ensure that the 

CAN bus lines are normal.

OPERATION

The signals from the engine-ECU, 4WD-ECU and 
ETACS-ECU are sent to the EPS-ECU.

FUNCTION

The signals from the engine-ECU, 4WD-ECU and 
ETACS-ECU are sent to the EPS-ECU for motor 
control.

TROUBLE JUDGEMENT

Check Conditions

• The power supply circuit system diagnosis code 

(No. C1540, C1541) is not set.

• The diagnosis code related to engine circuit sys-

tem, 4WD circuit system and ETACS circuit sys-
tem is set.

Judgement Criterion
The signals from the engine-ECU, 4WD-ECU and 
ETACS-ECU are not sent, and the microcomputer 
determines that there is a problem in the system.

Fail Safe, Back Up Function

• The EPS-ECU stores diagnosis code No. U0100, 

U0114 or U0141. If diagnosis code No. U0100 is 
stored, the ECU displays the electric power steer-
ing warning symbol to limit the power assistance.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the EPS-ECU

• Malfunction of the engine-ECU

• Malfunction of the ETACS-ECU

• Malfunction of the 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to 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 

− CAN Bus Diagnostics Table ). On 

completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting 
CAN bus lines
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(3) Check if the diagnosis code is set.

Q: Is the diagnosis codes U0100, U0114 or U0141 set?

YES : 

Go to Step 3

NO : 

This diagnosis is complete.

STEP 3. M.U.T.-III diagnosis code
Use M.U.T.-III to check if the same diagnosis code 
(time-out) is set in the other ECU.

Q: Is any diagnosis code set?

YES (Code No. U0100 is set) : 

Replace the engine 

ECU, and then go to Step 4.

YES (Code No. U0114 is set) : 

Replace the 

4WD-ECU, and then go to Step 4.

YES (Code No. U0141 is set) : 

Replace the 

ETACS-ECU, and then go to Step 4.

NO (No diagnosis code is set.) : 

Go to Step 4