Mitsubishi Outlander XL. Manual - part 224

ZK603589

MFI relay

A-33X

Connector: A-33X

AA00

ZK603594

Left bank heated oxygen
sensor (front)

AA00

B-14 (B)

Connector: B-14

ZK603591

ECM

B-10 (GR)

Connector: B-10

AA00

ZK603650AA00

A-13

Connector: A-13

 

CIRCUIT OPERATION

｠

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

｠

The ECM (terminal No. 34) controls continuity to the
left  bank  heated  oxygen  sensor  (front)  heater  by
turning the power transistor in the ECM "ON" and
"OFF".

TECHNICAL DESCRIPTION

｠

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

DESCRIPTIONS OF MONITOR METHODS

Left  bank  heated  oxygen  sensor  heater  (front)
current 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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-91

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITION

Logic Flow Chart

Start

End

Yes

Yes

Yes

No

No

No

Malfunction

Good

Continuous

failure for 2secs

Monitoring

conditions

Current < 0.17A

or

Current > 10.5A

Voltage < 2.0V

ZK603657 AA00

Heater ON

Yes

Yes

No

Check Conditions

｠

More than 2 seconds have passed since the engine
starting sequence was completed.

｠

While  the  left  bank  heated  oxygen  sensor  (front)
heater is on.

｠

Battery positive voltage is at between 11 and 16.5
volts.

Judgement Criterion

｠

The left bank heated oxygen sensor (front) heater
current  has  continued  to  be  higher  than  10.5
ampere for 2 seconds.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 2 P.13Ab-8.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )

｠

Left  bank  heated  oxygen  sensor  (front)  heater
failed.

｠

ECM failed.

13Ab-92

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

 

DIAGNOSIS

Required Special Tool:

｠

MD998464: Test Harness

STEP 1. Check the left bank heated oxygen sensor (front).

ZK603154

Heated
oxygen
sensor
component
side
connector

MD998464

Red

Blue

AA00

(1)

Disconnect left bank heated oxygen sensor (front) connector
B-14 and connect test harness special tool, MD998464, to
the connector on the left bank heated oxygen (front) sensor
side.

(2)

Measure  the  resistance  between  heated  oxygen  sensor
connector terminal No. 1 (red clip) and terminal No. 3 (blue
clip).

Standard value: 4.5 - 8.0 Ω [at 20°C (68°F)]

Q:Is the measured resistance between 4.5 and 8.0 ohms [at

20°C (68°F)]?

YES:

 Go to Step 2.

NO:

 Replace the left bank heated oxygen sensor (front).

Then go to Step 3.

STEP 2. Check the trouble symptoms.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic  Function  -  OBD-II  Drive  Cycle  -  Pattern  2  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0052 set?

YES:

 Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8. Then go to Step 3.

NO:

 It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

STEP 3. Test the OBD-II drive cycle.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic  Function  -  OBD-II  Drive  Cycle  -  Pattern  2  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0052 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-93

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0057: Heated Oxygen Sensor Heater Control Circuit Low (bank 2, sensor 2)

M11310100167USA0000010000

ZK602832

1

3

2

4

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

2

1

4

3

AA00

20A

WHITE

BR

O

WN

WHITE

WHITE

WHITE

A-33X

MFI
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

4

3

1

2

22

TO ECM

LEFT BANK HEATED
OXYGEN SENSOR (REAR)

1

2

3

4

TO ECM TO ECM

ENGINE
CONTROL
MODULE

35

4

LEFT BANK HEATED OXYGEN SENSOR (REAR) HEATER CIRCUIT

B-13

MU802665

B-10

A-13

OFF

ON

36

FUSIBLE LINK

13Ab-94

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES