Mitsubishi Colt Ralliart. Manual - part 83

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-286

STEP 8. Perform voltage measurement at A-08 
engine-ECU connector or engine-CVT-ECU 
connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON 

• Voltage between terminal No. 122 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

STEP 9. Connector check: B-141 ignition switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the connector.

STEP 10. Check ignition switch.

• Check ignition switch (Refer to GROUP 54A − 

Ignition Switch 

− Inspection 

P.54A-27

).

Q: Is the check result normal?

YES : 

Check intermediate connector B-110, 

B-129, and repair if necessary. If 
intermediate connector is normal, check and 
repair harness between B-141 (terminal No. 
2) ignition switch connector and A-08 
(terminal No. 122) engine-ECU connector or 
engine-CVT-ECU connector.

• Check output line for open/short 

circuit and damage.

NO : 

Replace ignition switch.

AK402725

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127

128

129

72 71

74 73

76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402725

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127

128

129

72 71

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76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-287

STEP 11. Check harness between B-106 (terminal 
No. 2) engine control relay connector and A-08 
(terminal No. 107) engine-ECU connector or 
engine-CVT-ECU connector.

NOTE: Before checking harness, check intermediate 
connector B-112, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair the damaged harness wire.

STEP 12. Check harness between B-106 (terminal 
No. 1 and No. 3) engine control relay connector 
and battery.

NOTE: Before checking harness, check intermediate 
connector B-108, and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 13 .

NO : 

Repair the damaged harness wire.

3

2

1

4

AK402060

B-106
J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

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136

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123

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125

126

127

128

129

72 71

74 73

76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

3

2

1

4

AK402060

B-106
J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-288

STEP 13. Check harness between B-141 (terminal 
No. 2) ignition switch connector and A-08 
(terminal No. 122) engine-ECU connector or 
engine-CVT-ECU connector.

NOTE: Before checking harness, check intermediate 
connectors B-110, B-129, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 14 .

NO : 

Repair the damaged harness wire.

STEP 14. Check harness between A-08 (terminal 
No. 75 and No. 76) engine-ECU connector or 
engine-CVT-ECU connector and body earth.

NOTE: Before checking harness, check intermediate 
connectors A-30, A-31, and repair if necessary.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Replace engine-ECU <M/T> or 

engine-CVT-ECU <CVT>.

NO : 

Repair the damaged harness wire.

AK402054

B-141

AC

Connector: B-141

1

2

3

4

5

6

B-141 Harness
side connector

AK402725

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128

129

72 71

74 73

76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

AK402725

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123

124

125

126

127

128

129

72 71

74 73

76 75

R

AG

A-08

Connector: 

A-08

Harness side connector

Battery

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-289

Inspection Procedure 24: Fuel pump system

AK402703

R

92 93 94 95969798

77 78 79 808182838485868788899091

99

100

107 108 109 110 111112113114115116117118119120121
122 123 124 125126127128129130131132133134135136

101102103104105106

71 72

73 74

75 76

3

1

2

4

3

1

2

4

1 2 3
4 5 6

M

1

2 3

4

5

Fuel pump
and gauge
unit

IG2

ST

LOCK

ACC

IG1

R

38

7.5A

17

1

15A

B-141

J/B

Ignition switch

Fuel 
pump 
relay (1)

Fuel 
pump 
relay (2)

Fuel Pump Circuit

2

R

L-B

OFF

ON

OFF

ON

B-103

B-117

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5

4

V

7

3

3

1

4

2

3

1

4

2

1

8

B-129

B-130

B-110

B-128

B-108

B-L

B

B

AD

A-08

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Fusible link

      C-16
(MU802058)

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Gray
R: Red  P: Pink  V: Violet  Pu: Purple

Main

Index

Group

TOC