Mitsubishi Galant (2004+). Manual — part 938

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-569

STEP 9. Check for short circuit to ground between
camshaft position sensor connector B-106 (terminal No. 2)
and PCM connector B-22 (terminal No. 104).

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 20.
NO : Repair it. Then go to Step 20.

AK303863

1

2

3

AB

CONNECTOR: B-106

B-106 (B)

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-570

STEP 10. Measure the power supply voltage at camshaft
position sensor connector B-106.

(1) Disconnect the connector B-106 and measure at the

harness side.

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

(3) Measure the voltage between terminal No. 3 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 12.
NO : Go to Step 11.

STEP 11. 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 camshaft position sensor
connector B-106 (terminal No. 3) because of open
circuit or short circuit to ground. Then go to Step 20.

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

Connector Inspection

P.00E-2

. Then go to Step 20.

AK303863

1

2

3

AB

CONNECTOR: B-106

B-106 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01422

B-106 HARNESS
CONNECTOR:
COMPONENT SIDE

3 2 1

AH

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-571

STEP 12. Check the continuity at camshaft position sensor
connector B-106.

(1) Disconnect the connector B-106 and measure at the

harness side.

(2) Check for the continuity between terminal No. 1 and

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 15.
NO : Go to Step 13.

STEP 13. Check harness connector B-22 at PCM for
damage.

Q: Is the harness connector in good condition?

YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 20.

AK303863

1

2

3

AB

CONNECTOR: B-106

B-106 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01423

B-106 HARNESS
CONNECTOR:
COMPONENT SIDE

3 2 1

AF

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-572

STEP 14. Check for open circuit and harness damage
between camshaft position sensor connector B-106
(terminal No. 1) and PCM connector B-22 (terminal No.
113).

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 20.
NO : Repair it. Then go to Step 20.

STEP 15. Check harness connector B-17X at the MFI relay
for damage.

Q: Is the harness connector in good condition?

YES : Go to Step 16.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 20.

AK303863

1

2

3

AB

CONNECTOR: B-106

B-106 (B)

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