Mitsubishi Outlander XL. Manual — part 1277

FAIL-SAFE SPECIFICATIONS

Diagnost
ic trouble
code No.

Diagnostic item Fail-safe

Detection
timing

Countermeasures for failure

Cancel
condition

AWD
control

Combination
meter (AWD
operation
indicator,
LOCK
indicator,
driving
system

oil

temperature
warning
lamp)

Actuator
relay inside
AWD-ECU

C1078

Different size tire
installation

Always

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

C1456

Harness,
coupling

coil

overcurrent
abnormality

Always

Immediatel
y to FWD

AWD

and

LOCK
indicators
flash
alternately.

OFF

Ignition

switch:

OFF

C145A

Harness,
coupling

coil

short

circuit

abnormality

Always

Immediatel
y to FWD

AWD

and

LOCK
indicators
flash
alternately.

OFF

Ignition

switch:

OFF

C145D

Harness,
coupling

coil

break
abnormality

Always

Immediatel
y to FWD

AWD

and

LOCK
indicators
flash
alternately.

OFF

Ignition

switch:

OFF

C145F

Coupling
overload

Always

Gradually to
FWD

Drive system
oil
temperature
warning lamp
turns ON.

ON

Estimated
temperature

of

coupling is at
specification or
less.

C1460

Drive

mode

selector circuit
abnormality

FWD switch:
ON
LOCK switch:
ON

Changes
into AWD
AUTO
mode.

AWD

and

LOCK
indicators
flash
alternately.

ON

Coupling:
Resumes

the

normal state.

27-14

REAR AXLE

ELECTRONIC CONTROL AWD

Diagnost
ic trouble
code No.

Diagnostic item Fail-safe

Detection
timing

Countermeasures for failure

Cancel
condition

AWD
control

Combination
meter (AWD
operation
indicator,
LOCK
indicator,
driving
system

oil

temperature
warning
lamp)

Actuator
relay inside
AWD-ECU

C2100

Battery voltage
abnormality
(Low voltage)

When

the

engine speed
is 1500 r/min,
IG1 voltage is
less than 8 V,
and

battery

voltage is less
than 8 V.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

C2101

Battery voltage
abnormality
(High voltage)

IG1 voltage
and

battery

voltage

are

more than 17
V.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

C211C

IG1

power

supply

low

voltage
abnormality

IG1 voltage is
less than 8 V.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

C211D

IG1

power

supply

high

voltage
abnormality

IG1 voltage is
more than 17
V.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

C211E

Power

supply

voltage
abnormality
(Low voltage)

IG1 voltage is
7.5 V or more.

Immediatel
y to FWD

AWD

and

LOCK
indicators
flash
alternately.

OFF

Ignition

switch:

OFF

C211F

Power

supply

voltage
abnormality
(High voltage)

Power supply
voltage is 17
V or more

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Battery

power

supply voltage is
16 V or less.

REAR AXLE

27-15

ELECTRONIC CONTROL AWD

Diagnost
ic trouble
code No.

Diagnostic item Fail-safe

Detection
timing

Countermeasures for failure

Cancel
condition

AWD
control

Combination
meter (AWD
operation
indicator,
LOCK
indicator,
driving
system

oil

temperature
warning
lamp)

Actuator
relay inside
AWD-ECU

C2208

AWD-ECU
internal
abnormality

Always

Immediatel
y to FWD

AWD

and

LOCK
indicators
flash
alternately.

OFF

Ignition

switch:

OFF

U0001

Bus

off

abnormality

When bus-off
interruption is
detected

Control
using

the

data value
just before
the bus-off
detection.

AWD

and

LOCK
indicators
flash
alternately.

Turns

ON/

OFF
depending on
the data value
just

before

the

bus-off

detection.

Ignition

switch:

OFF

U0100

Engine CAN time
out

Always

Gradually to
AWD AUTO
mode

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

U0121

ABS CAN time
out

ABS

signal

cannot

be

received.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

U0141

ETACS

CAN

time out

ETACS
signal cannot
be received.

Retains the
last normal
status.

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

U0401

Engine

CAN

data abnormality

Always

Gradually to
AWD AUTO
mode

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

27-16

REAR AXLE

ELECTRONIC CONTROL AWD

Diagnost
ic trouble
code No.

Diagnostic item Fail-safe

Detection
timing

Countermeasures for failure

Cancel
condition

AWD
control

Combination
meter (AWD
operation
indicator,
LOCK
indicator,
driving
system

oil

temperature
warning
lamp)

Actuator
relay inside
AWD-ECU

U0415

ABS CAN data
abnormality

One or more
wheel speed
data

has

abnormality.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

U113C

Wheel

speed

sensor
abnormality

ABS

signal

cannot

be

received.
Diagnostic
trouble code
U0121

has

not

been

detected yet.

Gradually to
FWD

AWD

and

LOCK
indicators
flash
alternately.

ON

Ignition

switch:

OFF

DIAGNOSTIC FUNCTION

AWD-ECU has the following functions for easier
system checks. All of the following items can be
diagnosed using the scan tool.

｠

Diagnostic trouble code set

｠

Service data output

｠

Actuator test

｠

Freeze frame data output

DIAGNOSTIC TROUBLE CODE SET
Using scan tool, the diagnostic trouble code
(information of failures generated in the electronic
control AWD system) can be read. When a failure
occurs, AWD-ECU sets the diagnostic trouble code
for that failure in the nonvolatile memory (EEPROM*),
so the recorded information will not be erased even if
the battery is disconnected.

NOTE:

｠

*EEPROM (Electrical Erasable & Programmable
ROM): Special type of memory that can be
programmed or erased electrically

｠

For the diagnostic trouble code output items of the
electronic control AWD, refer to Workshop Manual.

SERVICE DATA OUTPUT
Using scan tool, the data (input data from each ECU
and switch) used for control by the electronic control
AWD system can be read.

NOTE:

For each service data item, refer to

Workshop Manual.

ACTUATOR TEST
Scan tool can forcibly drive the actuators (electronic
control coupling solenoid and drive mode indicator)
controlled by the electronic control AWD system.

NOTE:

For the actuator test specification, refer

to Workshop Manual.

FREEZE FRAME DATA OUTPUT
Scan tool can read the freeze frame data (driving
conditions when the failure occurs) set when the
diagnostic trouble code is detected.

NOTE:

For freeze frame data items, refer to

Workshop Manual.

REAR AXLE

27-17

ELECTRONIC CONTROL AWD