Mitsubishi Galant (2004+). Manual - part 1312

 

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Mitsubishi Galant (2004+). Manual - part 1312

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-941

STEP 13. Check for harness damage between accelerator 
pedal position sensor connector C-24 (terminal No. 3) and 
PCM connector B-20 (terminal No. 26).

Q: Is the harness wire in good condition?

YES : Go to Step 14.
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-942

STEP 14. Check for harness damage between accelerator 
pedal position sensor connector C-24 (terminal No. 6) and 
PCM connector B-20 (terminal No. 27).

Q: Is the harness wire in good condition?

YES : Go to Step 15.
NO :  Repair it. Then go to Step 16.

STEP 15. Replace the acceletator pedal position sensor.

(1) Replace the acelerator pedal position sensor.
(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 :  The procedure is complete.

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

AK303202

1

6 5 4 3 2

ACCELERATOR
PERAL

AB

CONNECTOR: C-24

C-24 (B)

ACCELERATOR 
PEDAL POSITION 
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-943

STEP 16. 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 : Retry the troubleshooting.
NO :  The inspection is complete.

DTC P2227: Barometric Pressure Circuit Range/Performance Problem

CAUTION

If DTC P2227 has been set, TCL related DTC 
U1120 is also set. After P2227 has been diag-
nosed, don't forget to erase DTC U1120.

.

TECHNICAL DESCRIPTION

• The barometric pressure sensor outputs a volt-

age which corresponds to the barometric pres-
sure.

• The PCM checks whether this voltage is within a 

specified range.

.

DESCRIPTIONS OF MONITOR METHODS
Barometric pressure sensor output voltage does not 

change for specified period. (approximately 1 
week)

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-944

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• Barometric pressure is lower than 76 kPa (22.4 

in.Hg).

Judgement Criteria

• During 15 times of driving, the changes in the 

sensor output voltage should be 0.015 volt 
[equivalent to 0.4 kPa (0.12 in.Hg)] or less.

• Make sure that the engine coolant temperature is 

72

°C (160°F) or higher during each of the 15 

times of driving. Also, during each of the 15 times 
of driving, make sure that after the engine has 
been started, the engine coolant temperature has 
increased to 23

°C (40°F) or higher.

.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Procedure 6 

 Other Monitor 

P.13B-5

.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are:)

• PCM failed.

START

MONITORING

CONDITIONS

END

NO

NO

NO

YES

YES

YES

MALFUNCTION

GOOD

OUTPUT VOLTAGE

CHANGE

15 WARM-UP CYCLES

HAVE PASSED

AK302379

 

 

 

 

 

 

 

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