Mitsubishi Eclipse. Manual — part 131

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-17

.

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

89

− 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 "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.13A-470

.

If DTC P0442 is output, refer to DTC P0442

− Evaporative Emission Control System Leak

Detected (Small Leak)

P.13A-475

.

If DTC P0451 is output, refer to DTC P0451

− Evaporative Emission Control System

Pressure Sensor Range/performance

P.13A-517

.

If DTC P0452 is output, refer to DTC P0452

− Evaporative Emission Control System

Pressure Sensor Low Input

P.13A-535

.

If DTC P0453 is output, refer to DTC P0453

− Evaporative Emission Control System

Pressure Sensor High Input

P.13A-553

.

If DTC P0455 is output, refer to DTC P0455

− Evaporative Emission Control System Leak

Detected (Gross Leak)

P.13A-571

.

If DTC P0456 is output, refer to DTC P0456

− Evaporative Emission Control System Leak

Detected (Very Small Leak)

P.13A-589

.

EVAPORATIVE EMISSION SYSTEM LEAK MONITOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-18

PROCEDURE 2

.

FUEL TRIM MONITOR
DTC

P0171, P0172

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 deceleration/acceleration returning to 89

−

97 km/h (55

− 60 mph) within 120 seconds. (During monitor)

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

If DTC P0171 is output, refer to DTC P0171

− System too lean

P.13A-328

.

If DTC P0172 is output, refer to DTC P0172

− System too rich

P.13A-337

.

AKX01346

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)

0

100

50

0

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01346 AF

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-19

PROCEDURE 3

CATALYTIC CONVERTER MONITOR
DTC

P0421

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: 5th 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 (M/T: 4th speed), keep the

vehicle speed at 56

− 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 monitor sessions.

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

− Warm Up Catalyst Efficiency Below

Threshold

P.13A-466

.

AKX01347

(3)

(2)

(1)

(4)

(5)

(5)

(6)

(6)

(6)

(5)

(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

FULL
DECEL-
ERATION

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)

0

100

50

0

VEHICLE
SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01347AF

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-20

.

PROCEDURE 4

HEATED OXYGEN SENSOR MONITOR
DTC

P0133, P0139

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 5 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°C (176°F) or more

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

• Condition of A/T: Selector lever D range

Test
procedure

1. Engine: start
2. Accelerate until the vehicle speed is 56

− 64 km/h (35 − 40 mph).

3. While keeping the accelerator pedal opening degree constant (M/T: 4th speed), keep the

vehicle speed at 56

− 64 km/h (35 − 40 mph) and travel for 120 seconds or more. (During

monitor)

4. Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.
5. Confirm that the diagnostic trouble code (DTC) is not output.
6. If DTC P0133 is output, refer to DTC P0133

− Heated oxygen Sensor Circuit Slow

Response (Sensor 1)

P.13A-247

.

If DTC P0139 is output, refer to DTC P0139

− Heated oxygen Sensor Circuit Slow

Response (Sensor 2)

P.13A-308

.

AKX01348

AKX01348

(3)

(2)

(1)

(4)

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

ENGINE
START

IGNITION
SWITCH: "LOCK"
(OFF) POSITION

DURING MONITOR

97
(60)

64
(40)

32
(20)

0

100

50

0

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01348 AE