Mitsubishi Montero (2004+). Manual - part 290

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-647

DTC SET CONDITIONS

Logic Flow Chart

.

INDICATED FUEL LEVEL

CHANGE < 2L

ACCUMULATE FUEL CONSUMPTION

THROUGH FUEL INJECTORS.

ACCUMULATED FUEL 
CONSUMPTION WILL NOT 
RESET WHEN KEY-OFF/ON.

ACCUMULATED FUEL 

CONSUMPTION > =40L

START

END

NO

NO

NO

YES

YES

YES

MALFUNCTION

GOOD

MONITORING

CONDITIONS

RESET ACCUMULATE

FUEL CONSUMPTION.

AK302955

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-648

Check Conditions, Judgement Criteria

• When the fuel consumption calculated from the 

operation time of the injector amounts to 20 liters 
(5.3 gal), the diversity of the amount of fuel in 
tank calculated from the fuel level sensor is 2 
liters (0.5 gal) or less.

.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Procedure 6 

− Other Monitor 

P.13A-4

.

.

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

• Fuel level sensor failed.

• Open or shorted fuel level sensor circuit, harness 

damage, or connector damage.

• PCM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

DIAGNOSIS

STEP 1. Check fuel gauge.
Q: Is the fuel gauge functioning?

YES : Go to Step 3.
NO :  Go to Step 2.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-649

STEP 2. Check for short circuit to ground between fuel 
level sensor connector G-03 (terminal No. 1) and PCM 
connector D-134 (terminal No. 72).

NOTE: Check harness after checking intermediate connectors 
E-113, D-111 and F-07. If intermediate connectors are dam-
aged, repair or replace them. Refer to GROUP 00E, Harness 
Connector Inspection 

P.00E-2

. Then go to Step 6.

Q: Is the harness wire in good condition?

YES : Refer to GROUP 54A, Chassis Electrical 

− 

Combination Meters Assembly and Vehicle Speed 
Sensor 

− Equipment Diagnosis − Symptom Chart 

P.54A-41

.

NO :  Repair it. Then go to Step 6.

AK200959

1

2

3

AB

CONNECTOR: G-03

G-03(B)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK201166

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76

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85

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80

72

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81

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89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-650

STEP 3. Check connector D-134 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 4.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 6.

STEP 4. Check for open circuit or harness damage 
between fuel level sensor connector G-03 (terminal No. 1) 
and PCM connector D-134 (terminal No. 72).

AK201166

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76

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85

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87

80

72

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74

75

81

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83

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88

89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AK200959

1

2

3

AB

CONNECTOR: G-03

G-03(B)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK201166

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62

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64

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67

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71

76

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85

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80

72

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81

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83

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88

89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE