Mitsubishi Galant (2004+). Manual - part 1193

 

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Mitsubishi Galant (2004+). Manual - part 1193

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-465

STEP 5. Check the sensor supply voltage at PCM 
connector B-20 by using power plant ECU check harness 
special tool MB991923.

(1) Disconnect the all PCM connectors and connect power 

plant ECU check harness special tool MB991923 between 
the separated connectors.

(2) Disconnect the fuel tank temperature sensor connector 

D-18.

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

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

AK203002

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

AB

POWER PLANT ECU 
CHECK HARNESS CONNECTOR

MB991923

PCM

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-466

(4) Measure the voltage between terminal No. 41 and ground.

• Voltage should be between 4.5 and 4.9 volts.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.5 and 4.9 volts?

YES : Go to Step 6.
NO :  Go to Step 7.

STEP 6. Check harness connector B-20 at PCM for 
damage.

Q: Is the harness connector in good condition?

YES : Check harness connector C-25 at intermediate 

connector for damage, and repair or replace as 
required. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If the intermediate connector is in 

good condition, repair the harness wire between fuel 
tank temperature sensor connector D-18 and PCM 
connector B-20 because of open circuit. Then go to 
Step 11.

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

Connector Inspection 

P.00E-2

. Then go to Step 11.

25

21

24 23 22

29 28 27 26

34 33 32 31 30

38 37 36 35

43 42 41 40 39

AK203168AB

POWER PLANT ECU 
CHECK HARNESS 
CONNECTOR 

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-467

STEP 7. Check harness connector B-20 at PCM for 
damage.

Q: Is the harness connector in good condition?

YES : Replace the PCM. Then go to Step 11.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 11.

STEP 8. Check the continuity at fuel tank temperature 
sensor harness side connector D-18.

(1) Disconnect the connector D-18 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 9.
NO :  Repair harness wire between fuel tank temperature 

sensor connector D-18 (terminal No. 1) and ground 
because of open circuit or harness damage. Then go 
to Step 11.

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

1

2

3

4

5

AK303088

HARNESS
CONNECTOR:
COMPONENT SIDE

SERVICE
HOLE

AB

FUEL PUMP MODULE
(INCORPORATING FUEL LEVEL
SENSOR (MAIN) AND FUEL
TANK TEMPERATURE SENSOR)

CONNECTOR: D-18

D-18 (GR)

1

2

3

4

5

AK303090

D-18 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-468

STEP 9. Check harness connector B-20 at PCM for 
damage.

Q: Is the harness connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 11.

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

 

 

 

 

 

 

 

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