Operation; Diagnosis Function - Mitsubishi 2013 Outlander Service Manual

Output signal name
Motor current signal
EPS warning lamp illumination
request signal
Diagnosis code signal
Service data output signal
NOTE: Indicates items which send and receive data
through CAN communication.
Fail-safe function
If the EPS-ECU detects any malfunction, it illumi-
nates the EPS warning lamp, deactivates the EPS
functions, and then switches the steering system into
manual mode.

DIAGNOSIS FUNCTION

The EPS-ECU has the following functions to make
system checks easier.
• Diagnosis code set
• Service data output
All the above items can be diagnosed using MUT-III.
Diagnosis code set
There are 29 diagnostic items. Since all the diagnos-
tic results are recorded in volatile memory (EEP-
ROM*), they are stored in the memory even though
the battery terminals are disconnected.
Engine-ECU
Engine speed
Motor output
1. When the engine is started, the engine speed sig-
nal sent from the engine-ECU is input to the
EPS-ECU.
ELECTRIC POWER STEERING (EPS)
ELECTRIC POWER STEERING
Received by
Engine-ECU
•
−
−
−
Engine speed
500 r/min
OFF
OFF
min 0.6 second
Determination of motor
control start
Combination meter
(via the ETACS-ECU)
−
•
−
−
NOTE: .
•
*EEPROM (Electrical Erasable & Programmable
ROM): Special type of memory that can be pro-
grammed or erased electrically.
•
For diagnosis items, refer to Workshop Manual.
Service data output
Using M.U.T.-III, the input data sent from the sensors
and motors can be read.
NOTE: For service data items, refer to Workshop
Manual.

OPERATION

IGNITION SWITCH ON
Ignition supply voltage is applied to the EPS-ECU,
and the ECU enters standby mode.
Electric power Motor current signal
steering-ECU
ON
0.8 second
Temporary increase of motor
assist limit value
2. After starting the engine, the EPS-ECU judges
the engine status "ENGINE SPEED ON" when
the engine speed reaches 500 r/min, then the
power assist function is ready.
Diagnosis connector
−
−
•
•
M2370000700217
Motor
Maximum limit value (82Arms)
AC611649AJ
37-9