Mitsubishi Lancer Evolution X. Manual - part 241

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-29

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Power steering pressure switch monitor

P0554

16

Throttle position sensor plausibility monitor

P1233, P1234

Mass airflow sensor plausibility monitor

P1235, P1238

Torque monitor

P1241

Wastegate system monitor

P0234

17

Idle speed control system monitor

P0506, P0507

18

Ignition timing retard control (cold start strategy) monitor

P050B

19

Idle speed control system monitor

P1506, P1507

Variable valve timing system (MIVEC) monitor

P0010, P0011, P0013, 
P0014, P0016, P0017

20

Fuel trim monitor

P0171, P0172

21

Heated oxygen sensor monitor

P0131, P0137, P2195

22

Intake air temperature sensor monitor

P0097, P0098, P0112, P0113 23

Airflow sensor monitor

P0102, P0103

Manifold absolute pressure (MAP) sensor monitor

P0108

Engine coolant temperature sensor monitor

P0117, P0118

Heated oxygen sensor monitor

P0132, P0138, P2252, 
P2253

Fuel tank temperature sensor monitor

P0182, P0183

Injector monitor

P0201, P0202, P0203, 
P0204

Turbocharger wastgate solenoid monitor

P0243, P0247

Knock sensor monitor

P0327, P0328

Crankshaft position sensor monitor

P0335

Camshaft position sensor monitor

P0340, P0365

Evaporative emission purge solenoid monitor

P0443

Evaporative emission ventilation solenoid monitor

P0446

Fuel tank pressure sensor monitor

P0452, P0453

Fuel level sensor monitor

P0462, P0463

Engine RPM plausibility monitor

P1239

Barometric pressure sensor monitor

P2228, P2229

MONITOR ITEM

DIAGNOSTIC TROUBLE 
CODE (DTC)

PATTERN

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-30

PATTERN 1

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PATTERN 2

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Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature: More than 76° C (169° F)
• Condition of TC-SST: Shift lever "D" range

Test 
procedure

1. Start the engine with all the accessories switched OFF.
2. Drive the vehicle for 6 minutes at the following conditions. (During the monitor)

NOTE: When the system is normal, the monitor is completed earlier.
• Vehicle speed: More than 30 km/h (19 mph)
• Engine speed: More than 1,500 r/min, less than 3,500 r/min
• Engine load: More than 20 %, less than 60 %
• Without rapid accelerator pedal movement

3. Stop the vehicle in a safe place and turn the ignition switch to "LOCK" (OFF) position.
4. Start the engine and do Steps 1 to 3 again.

NOTE: When the vehicle is operating normally and the OBD-II Drive Cycle is carried out, 
the Readiness Codes will be set as "Complete" on the first drive cycle. The second drive 
cycle is required to set the Readiness Codes as "Complete" if a fault is detected during 
the first drive cycle.

5. Confirm that the diagnostic trouble code (DTC) is not output.

AK402430

(2)

(1)

(3)

6 Minutes

During the monitor

1,500 - 3,500 r/min

Ignition
switch:
"LOCK" (OFF)

Engine speed

AL

Time

Test 
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 10 seconds. (During the monitor)
3. Turn the ignition switch to the "LOCK" (OFF) position.
4. Start the engine and do Steps 1 to 3 again.

NOTE: When the vehicle is operating normally and the OBD-II Drive Cycle is carried out, 
the Readiness Codes will be set as "Complete" on the first drive cycle. The second drive 
cycle is required to set the Readiness Codes as "Complete" if a fault is detected during 
the first drive cycle.

5. Confirm that the diagnostic trouble code (DTC) is not output.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-31

PATTERN 3

.

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature: More than 7° C (45° F)
• Intake air temperature: More than −10° C (14° F)
• Barometric pressure: More than 76 kPa (22.4 in.Hg)
• Condition of TC-SST: Shift lever "D" range

Test 
procedure

1. Start the engine with all accessories switched OFF.
2. Drive the vehicle for 5 minutes at the following conditions. (During the monitor)

• Engine speed: Less than 3,500 r/min
• Airflow rate: More than 13 g/sec, less than 45 g/sec
• Accelerator pedal: Except full close
• Without rapid accelerator pedal movement

3. Release the accelerator pedal for 5 seconds.
4. Drive the vehicle for 3 minutes at the following conditions. (During the monitor)

• Engine speed: Less than 3,500 r/min
• Airflow rate: More than 13 g/sec, less than 45 g/sec
• Accelerator pedal: Except full close
• Without rapid accelerator pedal movement

NOTE: When the system is normal, the monitor is completed earlier.

5. Stop the vehicle in a safe place and turn the ignition switch to "LOCK" (OFF) position.
6. Start the engine and do Steps 1 to 5 again.

NOTE: When the vehicle is operating normally and the OBD-II Drive Cycle is carried out, 
the Readiness Codes will be set as "Complete" on the first drive cycle. The second drive 
cycle is required to set the Readiness Codes as "Complete" if a fault is detected during 
the first drive cycle.

7. Confirm that the diagnostic trouble code (DTC) is not output.

AK402432

(2)

(1)

(3)

5 Minutes

Ignition 
switch: 
"LOCK" (OFF)

During the monitor

3,500 r/min

Engine speed

AD

(4)

(5)

3 Minutes

5 Seconds

During the monitor

Time

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-32

PATTERN 4

.

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature at engine start: Less than 36° C (96° F)
• Intake air temperature at engine start: Less than 36° C (96° F)
• Fuel amount at engine start: More than 15 %, less than 40 %
• Engine coolant temperature: More than 60° C (140° F)
• Intake air temperature: More than 5° C (41° F), less than 45° C (113° F)
• Barometric pressure: More than 76 kPa (22.4 in.Hg)
• Fuel temperature: Less than 36° C (96° F)
• Condition of TC-SST: Shift lever "D" range

Test 
procedure

1. Start the engine with all the accessories switched OFF.
2. Drive the vehicle for 16 minutes at the following conditions. (During the monitor)

• Engine speed: More than 1,600 r/min, less than 4,000 r/min
• Vehicle speed: More than 20 km/h (12 mph)
• Engine load: More than 20 %, less than 50 %
• Without rapid accelerator pedal movement

NOTE: Keep running as long as possible with the power steering pressure switch in 

the OFF position.

NOTE: When the system is normal, the monitor is completed earlier.

3. Stop the vehicle in a safe place and turn the ignition switch to "LOCK" (OFF) position.
4. Start the engine and do Steps 1 to 3 again.

NOTE: When the vehicle is operating normally and the OBD-II Drive Cycle is carried out, 
the Readiness Codes will be set as "Complete" on the first drive cycle. The second drive 
cycle is required to set the Readiness Codes as "Complete" if a fault is detected during 
the first drive cycle.

5. Confirm that the diagnostic trouble code (DTC) is not output.

AK402430

(2)

(1)

(3)

16 Minutes

During the monitor

1,600 - 4,000 r/min

Ignition
switch:
"LOCK" (OFF)

Engine speed

AI

Time