Mitsubishi Outlander XL. Manual - part 214

ITEMS

SYMPTOM

Poor acceleration Poor acceleration is inability to obtain an acceleration corresponding to

the degree of throttle opening, even though acceleration is smooth. Also
the inability to reach maximum speed.

Stumble

Engine  speed  increase  is
delayed  when  the  accelerator
pedal  is  initially  depressed  for
acceleration.

ZK600774

VEHICLE
SPEED

TIME

NORMAL

STUMBLE

INITIAL
ACCEL-
ERATOR
PEDAL 
DEP-
RESSION

IDLING

AA00

Shock

The feeling of a comparatively large impact or vibration when the engine
is accelerated or decelerated.

Surge

This is slight acceleration and deceleration feel usually felt during steady,
light throttle cruise. Most notable under light loads.

Knocking

A sharp sound during driving, which sounds like a hammer striking the
cylinder walls. It makes poor driveability.

At stopped

Run

 on

("Dieseling")

The condition in which the engine continues to run after the ignition switch
is turned to the "LOCK" (OFF) position. Also called "dieseling".

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-51

SYMPTOM CHART

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0031: Heated Oxygen Sensor Heater Control Circuit Low (bank 1, sensor 1)

M11310100161USA0000010000

ZK602828

1

3

2

4

2

1

4

3

1

2

3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

20A

WHITE

GRA

Y

WHITE

WHITE

WHITE

A-33X

MFI
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

4

3

1

2

22

TO ECM

36

FUSIBLE LINK

AA00

RIGHT BANK HEATED
OXYGENSENSOR (FRONT)

1

2

3

4

TO ECM TO ECM

ENGINE
CONTROL
MODULE

33

4

B-03

MU802665

B-10

A-13

OFF

ON

RIGHT BANK HEATED OXYGEN SENSOR (FRONT) HEATER CIRCUIT

13Ab-52

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603589

MFI relay

A-33X

Connector: A-33X

AA00

ZK603591

ECM

B-10 (GR)

Connector: B-10

AA00

ZK603590AA00

Right bank heated
oxygen sensor (front)

Front exhaust 
pipe RH

B-03 (GR)

Connector: B-03

ZK603650AA00

A-13

Connector: A-13

 

CIRCUIT OPERATION

｠

Power is supplied from the MFI relay (terminal No.
4)  to  the  right  bank  heated  oxygen  sensor  (front)
heater.

｠

The ECM (terminal No. 33) controls continuity to the
right bank heated oxygen sensor (front) heater by
turning the power transistor in the PCM "ON" and
"OFF".

TECHNICAL DESCRIPTION

｠

The  ECM  checks  whether  the  heater  current  is
within  a  specified  range  when  the  heater  is
energized.

｠

The  ECM  checks  whether  the  heater  voltage  is
within  a  specified  range  when  the  heater  is  not
energized.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-53

DIAGNOSTIC TROUBLE CODE PROCEDURES

DESCRIPTIONS OF MONITOR METHODS

Right  bank  heated  oxygen  sensor  heater  (front)
current or voltage is out of specified range.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored in
memory for the item monitored below)

｠

Not applicable

Sensor (The sensor below is determined to be
normal)

｠

Not applicable

13Ab-54

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES