Mitsubishi Galant 9G. Manual — part 852

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-850

STEP 6. Check harness connector B-22 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 10.

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-851

STEP 7. Check for harness damage between engine oil
pressure switch connector B-34 (terminal No. 1) and PCM
connector B-22 (terminal No. 110).
Q: Is the harness wire in good condition?

YES : Go to Step 8.
NO : Repair it. Then go to Step 10.

AK303894

1

AK303894

1

AB

CONNECTOR: B-34

B-34 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

RADIATOR
UPPER HOSE

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-852

STEP 8. Using scan tool MB991958, check actuator test
item 22: Engine Oil Control Valve.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the actuator test mode for item

22, Engine oil control valve.

• An operation sound should be heard and vibration

should be felt when the engine oil control valve is oper-
ated.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the engine oil control valve operating properly?

YES : Replace the engine oil pressure switch. Then go to

Step 9.

NO : Replace the engine oil control valve. Then go to Step

10.

STEP 9. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Warm up the engine until engine coolant temperature

reaches 80

°C (176°F) or higher.

(4) 30 seconds or more have passed since the engine starting

sequence was completed, read the DTC.Turn the ignition
switch to the "LOCK" (OFF) position.

Q: Is DTC P1020 set?

YES : Replace the PCM. Then go to Step 10.
NO : The Inspection is complete.

AK303804AB

MB991910

DATA LINK
CONNECTOR

MB991824

MB991827

AK303804AB

MB991910

DATA LINK
CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-853

STEP 10. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Warm up the engine until engine coolant temperature

reaches 80

°C (176°F) or higher.

(4) 30 seconds or more have passed since the engine starting

sequence was completed, read the DTC.Turn the ignition
switch to the "LOCK" (OFF) position.

Q: Is DTC P1020 set?

YES : Retry the trouble shooting.
NO : The Inspection is complete.

AK303804AB

MB991910

DATA LINK
CONNECTOR

MB991824

MB991827