Mitsubishi Outlander GS45X. Manual - part 853

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-345

DTC P0201: Injector Circuit - Cylinder 1

AK700143

1

3

2

4

1

2

3
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 2 3 4

5 6 7

15

14

13

12

11

9

8

1

6

4

5

9

8

10

10

11

13

15

14

12

16

7

2 3

1

2 3

6

7 8

4 5

9 10

2

1

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

B-101

(MU802062)

B-21

MU802645

1

6

2

ETACS-
ECU

2

7

INJECTOR CIRCUIT-CYLINDER 1

BLUE

BLUE

GREEN-

WHITE

GREEN-

WHITE

B-10

AB

20A

WHITE

WHITE

A-33X

4

3

1

2

22

36

FUSIBLE LINK

OFF

ON

WHITE

WHITE

RED-WHITE

4

1

10

6

7

C-304

C-317

A-13

A-24X

3

BLUE

BLA

CK

BLA

CK

BLA

CK

2

IGNITION
SWITCH (IG1)

OFF

ON

INJECTOR
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

TO ECM

ENGINE CONTROL MODULE

MFI
RELAY

INJECTOR
NO. 1

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-346

.

CIRCUIT OPERATION

• The injector power is supplied from the injector 

relay (terminal No. 3).

• The ECM controls the injector by turning the 

power transistor in the ECM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• The amount of fuel injected by the injector is con-

trolled by the amount of continuity time the coil is 
grounded by the ECM.

.

DESCRIPTIONS OF MONITOR METHODS

The ECM detects open circuit and short malfunction.

.

MONITOR EXECUTION

Continuous

.

AK900137 AD

B-101 (GR)

Connector: B-101

AK700399AB

MFI relay

A-33X

Connector: A-33X

AK900134

AD

B-21 (B)

Connector: B-21

Intermediate
connector

AK700413AB

A-24X

Connector: A-24X

Injector relay

AK700401AB

ECM

B-10 (GR)

Connector: B-10

AK700414 AB

ETACS-ECU

C-317

Connectors: C-304, C-317

C-304

AK900602

Connector: A-13

A-13

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-347

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

.

DTC SET CONDITIONS <Circuit continuity 

− open circuit and shorted low>

Logic Flow Chart

.

Check Condition

• Engine is running.

Judgement Criterion

• The supply voltage is 3 volts or less without the 

injector driving for 2 seconds.

.

Good

Malfunction

Injector voltage < = 3V

Start

Continuous

failure for 2secs

End

No

No

Yes

Yes

Yes

No

AK700479

Monitoring

condition

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-348

DTC SET CONDITIONS <Circuit continuity 

− shorted high>

Logic Flow Chart

.

Check Condition

• Engine is running.

Judgement Criterion

• The coil current is 4.5 ampere or more with the 

injector driving for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 22 

P.13B-11

.

.

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

• No. 1 cylinder injector failed.

• Connector damage.

• Harness damage.

• ECM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

• MB991658: Test Harness

• MB992110: Power Plant ECU Check Harness

Good

Malfunction

Current >= 4.5A

End

Yes

No

No

No

AK604332

Start

Yes

Yes

Continuous

failure for 2secs

Monitoring
condition