Mitsubishi Montero (2004+). Manual — part 205

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-307

STEP 7. Check the left bank injector resistance at
intermediate connector B-44.

(1) Disconnect the injector intermediate connector B-44.

(2) Measure the resistance between each injector side

connector terminal.

a. Measure the resistance between terminal No. 2 and No.

8 at No. 2 cylinder.

b. Measure the resistance between terminal No. 7 and No.

8 at No. 4 cylinder.

c. Measure the resistance between terminal No. 5 and No.

8 at No. 6 cylinder.

• Resistance should be between 13 and 16 ohms [at 20°C

(68

°F)].

Q: Is the measured resistance between 13 and 16 ohms [at

20

°C (68°F)]?

YES : Go to Step 10.
NO : Go to Step 8.

STEP 8. Check connector B-33, B-35, B-11 at left bank
injector for damage.

(1) Remove the intake manifold.
(2) Check the left bank injector connector, which deviates from

the standard value at Step 7.

Q: Is the connector in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

AK200949

3

4

7

8

1

2

5

6

B-44(B)

CONNECTOR: B-44

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

AK000533

6

3 4
7 8

1 2
5

AK000533

6

3 4
7 8

1 2
5

INJECTOR
INTERMEDIATE
CONNECTOR

AB

AK201292

1

2

B-11(GR)

B-35(GR)

B-33(GR)

CONNECTORS: B-11, B-33, B-35

AB

HARNESS
CONNECTORS:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-308

STEP 9. Check the left bank injector.

(1) Check the left bank injector connector, which deviates from

the standard value at Step 7.

(2) Measure the resistance between injector side connector

terminal No. 1 and No. 2.

Standard value: 13

− 16 ohms [at 20°C (68°F)]

Q: Is the resistance between 13 and 16 ohms [at 20

°C

(68

°F)]?

YES : Repair harness wire between injector intermediate

connector and left bank injector connector because
of harness damage. Then go to Step 14.

NO : Replace the injector. Then go to Step 14.

STEP 10. Check connector D-132, D-135 at PCM for
damage.

Q: Is the connector in good condition?

YES : Go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

AK201292

1

2

B-11(GR)

B-35(GR)

B-33(GR)

CONNECTORS: B-11, B-33, B-35

AB

HARNESS
CONNECTORS:
COMPONENT SIDE

AK000456

1 2

INJECTOR SIDE
CONNECTOR

AB

AK201284

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTORS: D-132, D-135

PCM

D-135(GR)

D-132(GR)

AB

D-132 HARNESS CONNECTOR:
COMPONENT SIDE

D-135 HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-309

STEP 11. Check for harness damage between left bank
heated oxygen sensor (front) connector B-26 (terminal No.
4) and PCM connector D-135 (terminal No. 108).

Q: Is the harness wire in good condition?

YES : Go to Step 12.
NO : Repair it. Then go to Step 14.

AK201278

1

2

3

4

CONNECTOR: B-26

B-26(GR)

AC

HARNESS
CONNECTOR:
COMPONENT
SIDE

LEFT BANK
HEATED OXYGEN
SENSOR (FRONT)

AK200947

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

AB

PCM

D-135(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-310

STEP 12. Check for harness damage between left bank
injector connector and PCM connector.

a. Check the harness wire between left bank injector connec-

tor B-33 (terminal No. 2) and PCM connector D-132 (termi-
nal No. 5) at No. 2 cylinder.

b. Check the harness wire between left bank injector connec-

tor B-35 (terminal No. 2) and PCM connector D-132 (termi-
nal No. 21) at No. 4 cylinder.

c. Check the harness wire between left bank injector connec-

tor B-11 (terminal No. 2) and PCM connector D-132 (termi-
nal No. 6) at No. 6 cylinder.

Q: Is the harness wire in good condition?

YES : Go to Step 13.
NO : Repair it. Then go to Step 14.

STEP 13. Check the fuel pressure.

Refer to On-vehicle Service

− Fuel Pressure Test

P.13A-995

.

Q: Is the fuel pressure normal?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

STEP 14. 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 − Procedure 6 −

Other Monitor

P.13A-4

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0154 set?

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

AK201292

1

2

B-11(GR)

B-35(GR)

B-33(GR)

CONNECTORS: B-11, B-33, B-35

AB

HARNESS
CONNECTORS:
COMPONENT SIDE

AK200938

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)