Mitsubishi Montero (2004+). Manual — part 365

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-947

STEP 5. Check for open circuit and short circuit to ground
between accelerator pedal position switch connector
D-138 (terminal No.4) and PCM connector D-133 (terminal
No.38).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Confirm that the malfunction

system is eliminated.

NO : Repair it. Confirm that the malfunction system is

eliminated.

STEP 6. Check the continuity at accelerator pedal position
switch harness side connector D-138.
(1) Disconnect the connector D-138 and measure at the

harness side.

(2) Check for the continuity between terminal No. 5 and

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 9.
NO : Go to Step 7.

AK200945

3

4

5

1

2

8

6

7

AB

CONNECTOR: D-138

HARNESS
CONNECTOR:
COMPONENT SIDE

D-138(GR)

AK200939

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50

51

AB

CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

3

4

5

1

2

8

6

7

AK201390

D-138 HARNESS
CONNECTOR:
COMPONENT SIDE

AK201390AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-948

STEP 7. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

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

Connector Inspection

P.00E-2

. Confirm that the

malfunction system is eliminated.

STEP 8. Check for open circuit and harness damage
between accelerator pedal position switch connector
D-138 (terminal No. 5) and PCM connector D-135 (terminal
No. 96).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Confirm that the malfunction

system is eliminated.

NO : Repair it. Confirm that the malfunction system is

eliminated.

AK200947

91

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120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

AB

PCM

D-135(GR)

AK200945

3

4

5

1

2

8

6

7

AB

CONNECTOR: D-138

HARNESS
CONNECTOR:
COMPONENT SIDE

D-138(GR)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

AB

PCM

D-135(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-949

STEP 9. Check connector D-133, D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Confirm that the

malfunction system is eliminated.

STEP 10. Check for harness damage between accelerator
pedal position switch connector D-138 (terminal No. 5) and
PCM connector D-135 (terminal No. 96).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then confirm that the malfunction

system is eliminated.

NO : Repair it. Then confirm that the malfunction system is

eliminated.

AK200946

91

92

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120

31

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40

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52

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54

55

56

57

58

50

51

AB

CONNECTORS: D-133, D-135

D-133 HARNESS CONNECTOR:
COMPONENT SIDE

D-135 HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

D-133(GR)

AK200945

3

4

5

1

2

8

6

7

AB

CONNECTOR: D-138

HARNESS
CONNECTOR:
COMPONENT SIDE

D-138(GR)

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-950

DATA LIST REFERENCE TABLE

M1131152000939

CAUTION

• When shifting the selector lever to D range, the brakes should be applied so that the vehicle does

not move forward.

• Driving tests always need two persons: one driver and one observer.

NOTE: Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the
sensor mounted at the position second close to the engine.
NOTE: Bank 1 indicates the right bank cylinder, and bank 2 indicates the left bank cylinder.
NOTE: *

1

: In a new vehicle [driven approximately 500 km (311 mile) or less], the volume airflow sensor output

frequency is sometimes 10% higher than the standard frequency.
NOTE: *

2

: The injector drive time represents the time when the cranking speed is at 250 r/min or below when

the power supply voltage is 11 volts.
NOTE: *

3

: In a new vehicle [driven approximately 500 km (311 mile) or less], the injector drive time is some-

times 10% longer than the standard time.
NOTE: *

4

:Disconnect the throttle actuator control motor connector, and then delete the diagnosis code that

was recorded during the inspection with the use of the MB991958 scan tool after the inspection has been
completed.
NOTE: *

5

: Applicable to GST

NOTE: *

6

: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF"

position but this is no problem for checks.

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPEC-
TION
PROCE-
DURE NO.

REFE-
RENCE
PAGE

A/C
RELAY

49

A/C
compressor
clutch relay

Engine: warming up, idling

OFF

Procedure
No. 32

P.13A-941

Engine:
warming up,
idling

A/C
compressor
clutch is not
operating

OFF

A/C
compressor
clutch is
operating

ON

A/C
SWITCH

28

A/C switch

Engine: warming up, idling

OFF

Procedure
No. 32

P.13A-941

Engine:
warming up,
idling

A/C
compressor
clutch is not
operating

OFF

A/C
compressor
clutch is
operating

ON