Mitsubishi Galant (2004+). Manual — part 934

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-553

STEP 10. Check for short circuit to ground between
crankshaft position sensor intermediate connector B-119
(terminal No. 2) and PCM connector B-22 (terminal No.
103).

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 22.
NO : Repair it. Then go to Step 22.

AK303860

1

2

3

AB

CONNECTOR: B-119

B-119 (GR)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303016

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-554

STEP 11. Measure the power supply voltage at crankshaft
position sensor intermediate harness side connector
B-119.

(1) Disconnect the connector B-119 and measure at the

harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 1 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)

present?
YES : Go to Step 13.
NO : Go to Step 12.

STEP 12. Check harness connector B-17X at MFI relay for
damage.

Q: Is the harness connector in good condition?

YES : Repair harness wire between MFI relay connector

B-17X (terminal No. 4) and crankshaft position sensor
intermediate connector B-119 (terminal No. 1)
because of open circuit or short circuit to ground.
Then go to Step 22.

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

Connector Inspection

P.00E-2

. Then go to Step 22.

AK303860

1

2

3

AB

CONNECTOR: B-119

B-119 (GR)

HARNESS
CONNECTOR:
COMPONENT SIDE

1

2

3

AK302111

B-119 HARNESS
CONNECTOR:
COMPONENT SIDE

AC

AK303806

2

1

3

4

AB

CONNECTOR: B-17X

B-17X

RELAY BOX
TRIANGLE
MARK

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-555

STEP 13. Check the continuity at crankshaft position
sensor intermediate harness side connector B-119.

(1) Disconnect the connector B-119 and measure at the

harness side.

(2) Check for the continuity between terminal No. 3 and

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 16.
NO : Go to Step 14.

STEP 14. Check harness connector B-22 at PCM for
damage.

Q: Is the harness connector in good condition?

YES : Go to Step 15.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 22.

AK303806

2

1

3

4

AB

CONNECTOR: B-17X

B-17X

RELAY BOX
TRIANGLE
MARK

HARNESS CONNECTOR:
COMPONENT SIDE

AK302112

1

2

3

AC

B-119 HARNESS
CONNECTOR:
COMPONENT SIDE

AK303016

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-556

STEP 15. Check for open circuit and harness damage
between crankshaft position sensor intermediate
connector B-119 (terminal No. 3) and PCM connector B-22
(terminal No. 113).

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 22.
NO : Repair it. Then go to Step 22.

STEP 16. Check harness connector B-17X at the MFI relay
for damage.

Q: Is the harness connector in good condition?

YES : Go to Step 17.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 22.

AK303860

1

2

3

AB

CONNECTOR: B-119

B-119 (GR)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303016

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AIR CLEANER

AK303806

2

1

3

4

AB

CONNECTOR: B-17X

B-17X

RELAY BOX
TRIANGLE
MARK

HARNESS CONNECTOR:
COMPONENT SIDE