Mitsubishi Outlander GS45X. Manual — part 858

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-365

STEP 4. Check the No. 3 cylinder injector resistance at
intermediate connector B-21.
(1) Disconnect the intermediate connector B-21 and measure

at male connector side.

(2) Measure the resistance between terminal No. 6 and No. 8.

• Resistance should be between 10.5 and 13.5 ohms.

Q: Is the measured resistance between 10.5 and 13.5

ohms?
YES : Go to Step 7.
NO : Go to Step 5.

STEP 5. Check the harness connector B-103 at No. 3
cylinder injector for damage.
Remove the intake manifold.
Q: Is the harness connector in good condition?

YES : Go to Step 6.
NO : Repair it. Refer to GROUP 00E, Harness Connector

Inspection

P.00E-2

. Then go to Step 9.

STEP 6. Check the No. 3 cylinder injector B-103.
(1) Disconnect the No. 3 cylinder injector connector B-103.
(2) Measure the resistance between injector side connector

terminal No. 1 and No. 2.

Standard value: 10.5

− 13.5 ohms [at 20°C (68°F)]

Q: Is the measured resistance between 10.5 and 13.5 ohms

[at 20

°C (68°F)]?

YES : Repair harness wire between the intermediate

connector B-21 (terminal No. 6) and the injector
connector B-103 (terminal No. 1) and harness
wire between injector connector B-103 (terminal
No. 2) and intermediate connector B-21 (terminal
No. 8) because of open circuit or short circuit to
ground or harness damage.

Then go to Step 9.

NO : Replace the No. 3 cylinder injector. Then go to Step 9.

5

4

3

2

1

10

9

8

7

6

AK700304AB

B-21
Intermediate
connector

AK700204

1 2

AB

Injector side
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-366

STEP 7. Check for harness between the intermediate
connector B-21and the ECM connector B-10.
(1) Disconnect the intermediate connector B-21 and the ECM

connector B-10.

(2) Measure the resistance between the intermediate

connector B-21 (terminal No. 8) and the ECM connector
B-10 (terminal No. 18).

• Should be less than 2 ohms.

(3) Measure the continuity between the intermediate connector

B-21 (terminal No. 8) and ground.

• Not continuity

Q: Is the harness wire in good condition?

YES : Go to Step 8.
NO : Repair it. Refer to GROUP 00E, Harness Connector

Inspection

P.00E-2

. Then go to Step 9.

STEP 8. Using the oscilloscope, check the No. 3 cylinder
injector.
(1) Disconnect the intermediate connector B-21 and connect

the test harness MB991658 between the separated
connectors.

(2) Connect the oscilloscope probe to injector intermediate

connector terminal to No. 8.
NOTE: When measuring with the ECM side connector, dis-
connect all ECM connectors. Connect the check harness
special tool (MB992110) between the separated connec-
tors. Then connect an oscilloscope probe to the check har-
ness connector terminal No. 18.

(3) Start the engine and run at idle.

(4) Measure the waveform.

• The waveform should show a normal pattern similar to

the illustration.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?

YES : 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

.

NO : Replace the ECM. When the ECM is replaced,

register the ID code. Refer to GROUP 42B, Diagnosis
− ID Codes Registration Judgment Table <Vehicles

with KOS>

P.42B-15

or GROUP 42C, Diagnosis

− ID

Codes Registration Judgment Table <Vehicles with
WCM>

P.42C-10

. Then go to Step 9.

AK700305

5

4

3

2

1

10

9

8

7

6

AB

B-21 harness
connector:
component side

5

4

3

2

1

10

9

8

7

6

AK700300AB

B-21 Intermediate
connector

MB991658

Oscilloscope

AK700301

Normal waveform

A: Injector drive time

A

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-367

STEP 9. 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 22

P.13B-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0203 set?

YES : Retry the troubleshooting.
NO : The inspection is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-368

DTC P0204: Injector Circuit - Cylinder 4

AK700146

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

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

2

1

B-116

(MU802062)

1

2

19

BLUE

PINK

B-10

AB

20A

WHITE

WHITE

A-33X

4

3

1

2

22

OFF

ON

WHITE

RED-WHITE

4

1

10

6

7

C-304

C-317

A-13

A-24X

3

BLUE

2

OFF

ON

WHITE

36

FUSIBLE LINK

ETACS-
ECU

INJECTOR CIRCUIT-CYLINDER 4

BLA

CK

BLA

CK

BLA

CK

IGNITION
SWITCH (IG1)

INJECTOR
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

TO ECM

ENGINE CONTROL MODULE

MFI
RELAY

INJECTOR
NO. 4