Mitsubishi Outlander (2013+). Manual - part 484

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-7

DIAGNOSTIC FUNCTION

M1372007400191

HOW TO READ DIAGNOSIS CODE

Connect the M.U.T.-III to the 16-pin diagnosis con-
nector, and read a diagnosis code (Refer to GROUP 
00 

− How to Use Troubleshooting/Inspection Service 

Points 

− Diagnosis Function ).

HOW TO ERASE DIAGNOSIS CODE

Connect the M.U.T.-III to the 16-pin diagnosis con-
nector, and erase a diagnosis code (Refer to 
GROUP 00 

− How to Use Troubleshooting/Inspec-

tion Service Points 

− Diagnosis Function ).

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using 
M.U.T.-III (Refer to GROUP 00 

− How to Use Trou-

bleshooting/Inspection Service Points 

− Diagnosis 

Function ).
When detecting the trouble and storing the diagnosis 
code, the ECU connected to CAN bus line obtains 
the data when the diagnosis code is confirmed, and 
then stores the ECU status of that time. By analysing 
each data from M.U.T.-III, the troubleshooting can be 
performed more efficiently. The displayed items are 
as the table below.

Display item list

Item No.

Item name

Data item

Unit

01

Odometer

Total driving distance when the diagnosis code is 
generated

km

02

Ignition cycle

Number of times the ignition switch is turned "ON" or 
"LOCK (OFF)" after the past failure transition

Number of 
counts is 
displayed.

04

Accumulated minute

Cumulative time for current malfunction of diagnosis 
code

min

06

Torque sensor (main)

Voltage of the main torque sensor when the 
diagnosis code is generated

V

07

Torque sensor (sub)

Voltage of the sub torque sensor when the diagnosis 
code is generated

V

08

Torque sensor (power 
supply)

Voltage of torque sensor power supply when the 
diagnosis code is generated

V

09

Resolver voltage 1

Voltage of the motor angle sensor signal when the 
diagnosis code is generated.

V

10

Resolver voltage 2

V

11

Relay voltage

Voltage of power supply relay when the diagnosis 
code is generated

V

12

Vehicle speed

Vehicles speed when the diagnosis code is 
generated

km/h

13

Engine flag (EPS 
control)

Engine status for EPS when the diagnosis code is 
generated.

OFF/ON

14

Assist flag for EV

Not used.

−

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-8

CHECK OF ELECTRIC POWER 
STEERING WARNING LAMP

M1372013400264

ACC00023

AB

Electric power steering
warning lamp

<Standard meter>

ACC00024

AB

Electric power steering
warning lamp

<High contrast meter>

1. If the electric power steering warning lamp does 

not operate, the electric power steering system or 
the combination meter may be defective. Check 
for diagnosis code, and carry out diagnosis (Refer 
to 

P.37-8

). If no diagnosis codes are set, carry out 

diagnosis by referring to the electric power 
steering warning lamp-related inspection items on 
the trouble symptom chart (Refer to 

P.37-29

).

DIAGNOSIS CODE CHART

M1372007500358

CAUTION

• During diagnosis, a diagnosis code associated with other system may be set when the ignition 

switch is turned on with connector(s) disconnected. On completion, confirm all systems for diag-
nosis code(s). If diagnosis code(s) are set, erase them all.

• If more than three minutes elapse after the ignition switch is turned ON without starting engine, 

the electric power steering-ECU may set diagnosis codes U0100 as past trouble.

NOTE: For electric power steering system the power supply may not shut off immediately after the ignition 
switch is turned "OFF".

Diagnosis 
code No.

Diagnostic item

Reference pages

C1510

Torque sensor main

P.37-9

C1511

Torque sensor sub

C1512

Torque sensor main/sub voltage

P.37-11

C1513

Torque sensor power supply

P.37-12

C1514

Torque sensor power supply too low

P.37-14

C1521

Motor turning angle (output)

P.37-15

C1522

Motor turning angle range

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-9

DIAGNOSIS CODE PROCEDURES

Code No.C1510 Torque sensor main

 

Code No.C1511 Torque sensor sub

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

Power is supplied to the torque sensor from the 
EPS-ECU.

FUNCTION

The voltage based on the input torque is output to 
the EPS-ECU from the torque sensor main and sub 
for motor control.

TROUBLE JUDGEMENT

Check Conditions
With the torque sensor power supply ON, 5 V is sup-
plied to the torque sensor.

Judgement Criterion

• The torque sensor main output voltage or the 

torque sensor sub output voltage is more than 4.7 
V or less than 0.3 V.

C1530

Motor FET driver

P.37-16

C1531

Motor current too low

C1532

Motor output current too large

C1533

Motor terminal initial voltage

C1534

Motor terminal monitor voltage

C1535

Motor output current

C1536

Motor terminal voltage too high

C1540

Power supply voltage too high

P.37-18

C1541

Power supply voltage too low

P.37-19

C1550

ECU internal error

P.37-21

C1561

Engine revolution data (CAN)

P.37-21

C1564

Vehicle speed data invalid

P.37-22

C1565

Engine revolution data invalid

P.37-23

C1566

Invalid data received from AWC

P.37-24

C1657

Implausible coding data

P.37-25

U0100

Engine CAN timeout

P.37-26

U0114

4WD CAN timeout

U0141

ETACS CAN timeout

U1073

Bus-off

P.37-27

U1190

No receive fault detect signal

P.37-27

U1195

Coding not completed

P.37-28

U1197

Coding data unavailable

Diagnosis 
code No.

Diagnostic item

Reference pages

TROUBLESHOOTING

ELECTRIC POWER STEERING (EPS)

37-10

• The torque sensor main output voltage or the 

torque sensor sub output voltage does not meet a 
predetermined voltage stored in the microcom-
puter, and the microcomputer determines that 
there is a problem in the torque sensor main sys-
tem or the torque sensor sub system.

Fail Safe, Back Up Function
The EPS-ECU stops the motor control and illumi-
nates the electric power steering warning display, 
then sets the diagnosis code No. C1510 and C1511.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Defective torque sensor of the steering column 

shaft assembly

• Defective harness wire(s) or connector(s)

• Short or open circuit between the EPS-ECU 

and the torque sensor or loose connector 
contact

• Malfunction of the EPS-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 C1510 or C1511 set?

YES : 

Go to Step 3.

NO : 

This diagnosis is complete.

STEP 3. Voltage measurement at EPS-ECU 
connector (TSM, TSS, GND terminal)
(1) The steering is in the neutral position.
(2)  Measure the EPS-ECU voltage without 

disconnecting the connector (by backprobing).

(3) Turn the ignition switch from the "LOCK" (OFF) 

position to the "ON" position.

(4) Measure the voltage between the EPS-ECU 

connector (TSM terminal) and the EPS-ECU 

connector (GND terminal) or body earth. <main 
system>

OK: 2.5 

± 0.05 V

(5) Measure the voltage between the EPS-ECU 

connector (TSS terminal) and the EPS-ECU 
connector (GND terminal) or body earth. <sub 
system>

OK: 2.5 

± 0.05 V

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in TSM and TSS line 
between EPS-ECU connector and torque sensor

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 7.

STEP 5. M.U.T.-III data list
(1) The steering is in the neutral position.
(2) Check the following data list.

• Item No. 01: Torque sensor (main)

• Item No. 02: Torque sensor (sub)

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.

STEP 6. 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 C1510 or C1511 set?

YES : 

Replace the EPS-ECU (Refer to 

P.37-51

). 

Then go to Step 7.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Cope with Intermittent 

Malfunctions ).Then go to Step 7.

STEP 7. 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 C1510 or C1511 set?