Mitsubishi Montero (2004+). Manual - part 151

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-91

STEP 6. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Replace the PCM. Then go to Step 12.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

STEP 7. Measure the ground voltage at manifold absolute 
pressure sensor connector B-28 by backprobing.
(1) Do not disconnect the connector B-28.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 2 and ground by 

backprobing.

• Voltage should be 0.5 volt or less.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage 0.5 volt or less?

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

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)

AK200975

1

2

3

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-28

B-28(B)

3

2

1

AK203038

B-28 HARNESS 
CONNECTOR: 
HARNESS SIDE

AI

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-92

STEP 8. Check connector B-28 at the manifold absolute 
pressure sensor and connector D-135 at PCM for damage.
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 12.

AK200975

1

2

3

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-28

B-28(B)

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-93

STEP 9. Check for open circuit between manifold absolute 
pressure sensor connector B-28 (terminal No. 2) and PCM 
connector D-135 (terminal No. 96).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 12.
NO :  Repair it. Then go to Step 12.

STEP 10. Check connector B-28 at manifold absolute 
pressure sensor 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 12.

AK200975

1

2

3

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-28

B-28(B)

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)

AK200975

1

2

3

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-28

B-28(B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-94

STEP 11. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Replace the manifold absolute pressure sensor. Then 

go to Step 12.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

STEP 12. 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 P0108 set?

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

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)