Mitsubishi Galant (2004+). Manual - part 1311

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-937

STEP 8. Check for harness damage between accelerator 
pedal position sensor connector C-24 (terminal No. 5) and 
PCM connector B-20 (terminal No. 22).

Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then go to Step 16.

AK303202

1

6 5 4 3 2

ACCELERATOR
PERAL

AB

CONNECTOR: C-24

C-24 (B)

ACCELERATOR 
PEDAL POSITION 
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303092

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

CONNECTOR: B-20

B-20

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-938

STEP 9. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).

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) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is DTC P2138 set?

YES : Replace the PCM. Then go to Step 16.
NO :  It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspectio Service Points 

P.00-6

.

STEP 10. Check harness connector B-20 at PCM for 
damage.

Q: Is the harness connector in good condition?

YES : Go to Step 11.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 16.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AK303092

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

CONNECTOR: B-20

B-20

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-939

STEP 11. Check for harness damage between accelerator 
pedal position sensor connector C-24 (terminal No. 1) and 
PCM connector B-20 (terminal No. 30).

Q: Is the harness wire in good condition?

YES : Go to Step 12.
NO :  Repair it. Then go to Step 16.

AK303202

1

6 5 4 3 2

ACCELERATOR
PERAL

AB

CONNECTOR: C-24

C-24 (B)

ACCELERATOR 
PEDAL POSITION 
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303092

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

CONNECTOR: B-20

B-20

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-940

STEP 12. Check for harness damage between accelerator 
pedal position sensor connector C-24 (terminal No. 4) and 
PCM connector B-20 (terminal No. 21).

Q: Is the harness wire in good condition?

YES : Go to Step 13.
NO :  Repair it. Then go to Step 16.

AK303202

1

6 5 4 3 2

ACCELERATOR
PERAL

AB

CONNECTOR: C-24

C-24 (B)

ACCELERATOR 
PEDAL POSITION 
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303092

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

CONNECTOR: B-20

B-20

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER