Mitsubishi Outlander GS45X. Manual — part 555

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-43

PATTERN 15

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Drive cycle
pattern

Inspection
conditions

• Engine coolant temperature: More than −10°C (14°F)

• Barometric pressure: More than 76 kPa (22.4 in.Hg)

• Condition of CVT: Selector lever "D" range

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Drive the vehicle for 3 minutes at the following conditions. (During the monitor)

• Engine speed: More than 500 r/min, less than 3,000 r/min

• Engine load: More than 25 %

• Without rapid accelerator pedal change

• Except fuel cut

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.

AK402440

(2)

(1)

(3)

3 Minutes

During the monitor

500 - 3,000 r/min

Ignition
switch:
"LOCK" (OFF)

Engine speed

AE

Time

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-44

PATTERN 16

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PATTERN 17

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Drive cycle
pattern

Inspection
condition

Condition of CVT: Selector lever "D" range

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Accelerate until the vehicle speed is more than 50 km/h (31 mph).
3. Stop the vehicle in a safe place and let the engine idle for 20 seconds. (During the

monitor)

4. Repeat Steps 2 and 3 for 10 times.
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.
7. Confirm that the diagnostic trouble code (DTC) is not output.

AK402438

(3)

(2)

(1)

20 seconds

1st
mon-
itor

9th
mon-
itor

10th
mon-
itor

2nd
mon-
itor

Ignition
switch:
"LOCK" (OFF)

50 km/h
(31 mph)

Vehicle speed

AC

(3)

(2)

(2)

(3)

(3)

(2)

(5)

Idling

(2)

20 seconds

Time

Drive cycle
pattern

Inspection
conditions

• Engine coolant temperature: More than 20°C (68°F)

• Condition of CVT: Selector 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 30 seconds. (During the monitor)
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)

30 seconds

During the monitor

50 km/h
(31 mph)

Ignition
switch:
"LOCK" (OFF)

Vehicle speed

AP

Time

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-45

PATTERN 18

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PATTERN 19

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PATTERN 20

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PATTERN 21

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PATTERN 22

Inspection
conditions

• Engine coolant temperature: More than 41°C (106°F)

• Intake air temperature: More than −10°C (14°F)

• Barometric pressure: More than 76 kPa (22.4 in.Hg)

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 1 minute. (During the monitor)
3. 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.

Inspection
conditions

• Engine coolant temperature: More than 7°C (45°F), less than 41°C (106°F)

• Intake air temperature: More than −10°C (14°F)

• Barometric pressure: More than 76 kPa (22.4 in.Hg)

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 1 minute. (During the monitor)
3. 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.

Inspection
condition

Engine coolant temperature: More than 77

°C (171°F), less than 87°C (189°F)

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Drive the engine at 1,200

− 1,500 r/min for 30 seconds. (During the monitor)

3. 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.

Inspection
condition

Engine coolant temperature: More than 76

°C (169°F)

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 15 minutes. (During the monitor)
3. 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.

Inspection
conditions

• Intake air temperature: More than −10°C (14°F)

• Engine coolant temperature: More than 0°C (32°F)

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle for 5 minutes. (During the monitor)
3. 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.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-46

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PATTERN 23

SYSTEM READINESS TEST STATUS

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PURPOSE

The Readiness function (also referred to as I/M
Readiness or I/M Flags) indicates if a full diagnostic
check has been "Completed" (is "Ready") for each
non-continuous monitor. Enhanced I/M State Emis-
sion Programs will use the Readiness status (Codes)
to see if the vehicle is ready for OBD-II testing.
"Incomplete" (Not Ready) codes will be one of the
triggers for I/M failure.

.

OVERVIEW

The ECM monitors the following main diagnosis
items and records whether the evaluation was com-
pleted or is incomplete. The Readiness Codes are
established for the I/M programs, thereby confirming
that the vehicles have not been tampered with by
erasing the diagnostic trouble code(s) (DTCs) before
I/M testing. The Readiness Codes and DTCs can be
reset by disconnecting the battery or by erasing the
codes with a scan tool MB991958 (M.U.T.-III sub
assembly). For this reason, all the Readiness Codes
must be displayed "Complete" before I/M testing.

When the monitors run and complete, the scan tool
MB991958 (M.U.T.-III sub assembly) will display the
Readiness Codes as "Complete" (General Scan
Tools display as "Ready"). When the vehicle is oper-
ating normally and the OBD-II Drive Cycle is carried
out, the Readiness Codes will be set as "Complete"
on the first drive cycle. For DTCs requiring two drive
cycles to detect a fault, the second drive cycle is
required to set the Readiness Codes as "Complete"
if a fault is detected during the first drive cycle. If the
fault is still there after the second drive cycle, a DTC
will be set.

• Catalyst: P0420

• Evaporative system: P0442, P0455, P0456

• Linear air-fuel ratio sensor: P0133

• Linear air-fuel ratio sensor heater: P0031, P0053

• Heated oxygen sensor: P0139, P0140

• Heated oxygen sensor heater: P0037

• EGR system: P0401

After all the Readiness Codes are displayed as
"Complete", the technician is assured that any DTCs
related to the monitor will be displayed if the system
has a problem. That is why some State's I/M pro-
grams require the Readiness Code as "Complete"
before they check for DTCs.
NOTE: After a repair is made for a DTC, the techni-
cian should drive the OBD-II Drive Cycle checking
that the scan tool MB991958 (M.U.T.-III Sub Assem-
bly) displays all the Readiness Codes as "Complete".

Inspection
conditions

• Engine coolant temperature: More than 0°C (32°F) <Manifold absolute pressure sensor

monitor>

• Fuel amount at engine start: Less than 80 % <Fuel tank pressure sensor monitor>

Test
procedure

1. Start the engine with all the accessories switched OFF.
2. Let the engine idle at the engine speed less than 1,000 r/min for 15 seconds. (During the

monitor)

3. 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.