Content .. 366 367 368 369 ..

Mitsubishi Eclipse. Manual - part 368

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-15

PROCEDURE 1

EVAPORATIVE EMISSION SYSTEM LEAK MONITOR
DTC

P0441, P0442, P0451, P0452, P0453, P0455, P0456

Drive cycle
pattern

One drive [from start to ignition switch to the "LOCK" (OFF) position] will be completed while
traveling with the following drive pattern. It will take 8 minutes. You must complete this drive
twice.
NOTE: Vehicle speed and throttle opening angle should be within the shaded range. Test
drive must be completed within 16 minutes of "Key on."

Inspection
conditions

• Engine coolant temperature: 30°C (75°F) or less (The engine is stopped before the test

drive is started)

• Atmospheric temperature: 5 − 45°C (41 − 113°F)

• Condition of A/T: Selector lever D range

• Test may not run if fuel tank is over 2/3 full.

AKX01345

(3)

(2)

(1)

(4)

(5)

200 SECONDS
OR MORE

PREPARATION
PERIOD

ENGINE START

IGNITION SWITCH:
"LOCK" (OFF) POSITIO

DURING
MONITOR

150 SECONDS
OR MORE

89 - 97 km/h (55 - 60 mph)
M/T: 5TH SPEED

97
(60)

64
(40)

32
(20)

100

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01345 AF

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-16

Test
procedure

1. Engine: start
2. Accelerate until the vehicle speed is 89

− 97 km/h (55 − 60 mph).

3. Travel for 200 seconds or more while keeping the vehicle speed at 89

− 97 km/h (55 − 60

mph). (M/T = 5th speed)

4. While keeping the accelerator pedal opening degree constant, keep the vehicle speed at

− 97 km/h (55 − 60 mph) and travel for 150 seconds or more. (During monitor)

5. Return the vehicle to the shop, then turn the ignition switch to the "LOCK" (OFF) position.
6. Confirm that the diagnostic trouble code (DTC) is not output.
7. If DTC P0441 is output, refer to DTC P0441

− Evaporative Emission Control System

Incorrect Purge Flow

P.13B-624

If DTC P0442 is output, refer to DTC P0442

− Evaporative Emission Control System Leak

Detected (Small Leak)

P.13B-629

If DTC P0451 is output, refer to DTC P0451

− Evaporative Emission Control System

Pressure Sensor Range/performance

P.13B-673

If DTC P0452 is output, refer to DTC P0452

− Evaporative Emission Control System

Pressure Sensor Low Input

P.13B-691

If DTC P0453 is output, refer to DTC P0453

− Evaporative Emission Control System

Pressure Sensor High Input

P.13B-711

If DTC P0455 is output, refer to DTC P0455

− Evaporative Emission Control System Leak

Detected (Gross Leak)

P.13B-729

If DTC P0456 is output, refer to DTC P0456

− Evaporative Emission Control System Leak

Detected (Very Small Leak)

P.13B-749

EVAPORATIVE EMISSION SYSTEM LEAK MONITOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-17

PROCEDURE 2

FUEL TRIM MONITOR
DTC

P0171, P0172,P0174, P0175

Drive cycle
pattern

This monitor [from start to ignition switch to the "LOCK" (OFF) position] will be completed
while traveling with the following drive cycle pattern. It will take 35 minutes. You must
complete this drive twice.
NOTE: Vehicle speed and throttle opening angle should be within the shaded range.

Inspection
conditions

• Engine coolant temperature: 80 − 97°C (176 - 207°F)

• Atmospheric temperature: -10 − 60°C (14 − 140°F)

• Condition of A/T: Selector lever D range

Test
procedure

1. Engine: start
2. Accelerate until the vehicle speed is 89

− 97 km/h (55 − 60 mph).

3. Travel for 30 minutes or more while keeping the vehicle speed at 89

− 97 km/h (55 - 60

mph). (M/T = 5th speed) Carry out one gradual acceleration /deceleration, returning to a
speed of 50

− 60 mph within 120 seconds. (During monitor)

4. Return the vehicle to the shop, then turn the ignition switch to the "LOCK" (OFF) position.
5. Confirm that the diagnostic trouble code (DTC) is not output.
6. If DTC P0171 is output, refer to DTC P0171

− System too lean (Bank1)

P.13B-445

If DTC P0172 is output, refer to DTC P0172

− System too rich (Bank1)

P.13B-455

If DTC P0174 is output, refer to DTC P0174

− System too lean (Bank2)

P.13B-461

If DTC P0175 is output, refer to DTC P0175

− System too rich (Bank2)

P.13B-470

AKX01346

(3)

(2)

(1)

(4)

30 MINUTES OR MORE
89 - 97 km/h (55 - 60 mph)
M/T: 5TH SPEED

WITH 120 SECONDS

ENGINE START

IGNITION SW-
ITCH: "LOCK"
(OFF) POSITIO

DURING MONITOR

97
(60)

64
(40)

32
(20)

100

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01346 AF

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-18

PROCEDURE 3

CATALYTIC CONVERTER MONITOR
DTC

P0421, P0431

Drive cycle
pattern

This monitor [from start to ignition switch to the "LOCK" (OFF) position] will be completed
while traveling with the following drive cycle pattern. It will take 20 minutes. You must
complete this drive twice.
NOTE: Vehicle speed and throttle opening angle should be within the shaded range.

Inspection
conditions

• Atmospheric temperature: −10°C (14°F) or more

• A/C switch: OFF

• Condition of A/T: Selector lever D range

Test
procedure

1. Engine: start
2. Accelerate until the vehicle speed is 72 km/h (45 mph).
3. Travel for 300 seconds or more while keeping the vehicle speed at 72

− 97 km/h (45 - 60

mph). (M/T = 5ht speed)

4. Decelerate until the vehicle speed is within 56

− 64 km/h (35 − 40 mph).

5. While keeping the accelerator pedal opening degree constant, keep the vehicle speed at

− 64 km/h (35 − 40 mph) and travel for 90 seconds or more. (During monitor)

6. Fully close the throttle and decelerate, and keep the deceleration state for 10 seconds.

Then, quickly accelerate until the vehicle speed reaches 56

− 64 km/h (35 − 40 mph).

Then, repeat steps 5 and 6, and complete six monitoring sessions.

7. Return the vehicle to the shop, then turn the ignition switch to the "LOCK" (OFF) position.
8. Confirm that the diagnostic trouble code (DTC) is not output.
9. 9. If DTC P0421 is output, refer to DTC P0421

− Warm Up Catalyst Efficiency Below

Threshold (Bank 1)

P.13B-617

If DTC P0431 is output, refer to DTC P0431

− Warm Up Catalyst Efficiency Below

Threshold (Bank 2)

P.13B-621

AKX01347

(3)

(2)

(1)

(4)

(5)

(6)

(5)

(7)

300 SECONDS OR MORE
72 - 97 km/h (45 - 60 mph)
M/T: 5TH SPEED

PREPARATION
PERIOD

ENGINE
START

IGNITION
SWITCH:
"LOCK"
(OFF) POSITI

1 ST
MON-
ITOR

FULL
DECEL-
ERATION

2 ND
MON-
ITOR

6 TH
MON-
ITOR

90 SECONDS OR MORE

56 - 64 km/h (35 - 40 mph)
M/T: 4TH SPEED

97
(60)

64
(40)

32
(20)

100

VEHICLE
SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01347AF

Content .. 366 367 368 369 ..