Mitsubishi Lancer Evolution X. Manual - part 242

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-33

PATTERN 5

.

PATTERN 6

.

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 40 %, less than 85 %
• Engine coolant temperature: More than 20° C (68° F)
• Intake air temperature: More than −10° C (14° F)
• Barometric pressure: More than 76 kPa (22.4 in.Hg)
• Fuel temperature: Less than 33° C (91° F)

Test 
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 16 minutes. (During the monitor)

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

3. 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.

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature at engine start: More than 0° C (32° F)
• Condition of TC-SST: Shift lever "D" range

Test 
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 30 seconds. (During the monitor)
3. Accelerate the vehicle for 2 seconds at the following conditions. (During the monitor)

• Engine speed: More than 1,500 r/min
• Engine load: More than 20 %
• Throttle position sensor output voltage: More than 3.5 volts

4. Stop the vehicle in a safe place and turn the ignition switch to "LOCK" (OFF) position.
5. Start the engine and do Steps 1 to 4 again.
6. Confirm that the diagnostic trouble code (DTC) is not output.

AK402442

(2)

(1)

(3)

2 Seconds

Ignition 
switch: 
"LOCK" (OFF)

During the monitor

Engine speed

AE

1,500 r/min

(4)

30 Seconds

Time

Idling

During the monitor

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-34

PATTERN 7

.

PATTERN 8

.

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 at more than 50 km/h (31 mph) for 1 minute.
3. Stop the vehicle in a safe place and let the engine idle for 30 seconds.
4. Repeat Steps 2 and 3 again.
5. Stop the vehicle in a safe place and turn the ignition switch to "LOCK" (OFF) position.
6. Confirm that the diagnostic trouble code (DTC) is not output.

AK402435

(2)

(1)

(3)

1 Minute

Ignition 
switch: 
"LOCK" (OFF)

50 km/h
(31 mph)

Vehicle speed

AC

(5)

30 Seconds

Idling

(2)

(3)

1 Minute

30 Seconds

Time

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature at engine start: More than 7° C (47° F)
• Intake air temperature: Less than 60° C (140° F)
• Engine coolant temperature: More than 40° C (104° 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 5 minutes at the following condition.

• Vehicle speed: More than 50 km/h (31 mph)
• Air flow rate: More than 12 g/sec 
• Except fuel cut

3. Stop the vehicle in a safe place and let the engine idle for 30 seconds.
4. Turn the ignition switch to "LOCK" (OFF) position.
5. Confirm that the diagnostic trouble code (DTC) is not output.

AK900473

(2)

(1)

5 Minutes

Ignition
switch:
"LOCK" (OFF)

50 km/h
(31 mph)

Vehicle speed

AB

Idling

30 Seconds

Time

(3)

(4)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-35

PATTERN 9

.

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature at engine start: More than −10° C (14° F), less than 60° C 

(140° F)

• Intake air temperature: More than −10° C (14° F)
• Dropping of intake air temperature since engine start: Less than 10° C (18° 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)

• Vehicle speed: More than 50 km/h (31 mph)
• Air flow rate: More than 10 g/sec

NOTE: The system is normal if engine coolant temperature will rise more than 77

°

C 

(171

°

F) within 6 minutes.

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

AK402441

(2)

(1)

(3)

6 Minutes

During the monitor

50 km/h
(31 mph)

Ignition
switch:
"LOCK" (OFF)

Vehicle speed

AQ

Time

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-36

PATTERN 10

.

Drive cycle 
pattern

Inspection 
conditions

• Engine coolant temperature: More than 76° C (169° 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 the accessories switched OFF.
2. Drive the vehicle at 50 km/h (31 mph) for 6 minutes.
3. Release the accelerator pedal for 10 seconds then stop the vehicle in a safe place. 

(During the monitor)

4. Turn the ignition switch to "LOCK" (OFF) position.
5. Start the engine and do Steps 1 to 4 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.

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

AK604701

(2)

(1)

(3)

6 Minutes

During the monitor

50 km/h
(31 mph)

Ignition
switch:
"LOCK" (OFF)

Vehicle speed

AC

Time

(4)