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Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 203

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-11

PROCEDURE 1

EVAPORATIVE EMISSION CONTROL SYSTEM LEAK MONITOR

DTC

P0442, P0450,P0451, P0455

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

−

C (41

−

113

•

Condition of A/T: Selector lever D range

•

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

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

−

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 P0442 is output, refer to DTC P0442

−

Evaporative Emission Control System Leak Detected

P.13B-279

If DTC P0450 is output, refer to DTC P0450

−

Evaporative Emission Control System Pressure Sensor Malfunction

P.13B-304

If DTC P0451 is output, refer to DTC P0451

−

Evaporative Emission Control System Pressure Sensor Range/

performance

P.13B-318

If DTC P0455 is output, refer to DTC P0455

−

Evaporative Emission Control System Leak Detected (Gross Leak)

P.13B-332

AKX01345

(3)

(2)

(1)

(4)

(5)

200 SECONDS
OR MORE

PREPARATION
PERIOD

ENGINE START

IGNITION SWITCH:
"LOCK" (OFF) position

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 AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-12

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 com-
plete this drive twice.

NOTE: Vehicle speed and throttle opening angle should be within the shaded range.

Inspection
conditions

•

Engine coolant temperature: 80

−

C (176 - 207

•

Atmospheric temperature: -10

−

C (14

−

140

•

Condition of A/T: Selector lever D range

Test proce-
dure

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 (Bank 1)

P.13B-198

If DTC P0172 is output, refer to DTC P0172

−

System too rich (Bank 1)

P.13B-205

If DTC P0174 is output, refer to DTC P0174

−

System too lean (Bank 2)

P.13B-210

If DTC P0175 is output, refer to DTC P0175

−

System too rich (Bank 2)

P.13B-215

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) position

DURING MONITOR

97
(60)

64
(40)

32
(20)

100

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01346 AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-13

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 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 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. If DTC P0421 is output, refer to DTC P0421

−

Warm Up Catalyst Efficiency Below Threshold (Bank 1)

P.13B-274

If DTC P0431 is output, refer to DTC P0431

−

Warm Up Catalyst Efficiency Below Threshold (Bank 2)

P.13B-276

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) position

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 (%)

AKX01347AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-14

PROCEDURE 4

HEATED OXYGEN SENSOR MONITOR

DTC

P0130,P0133,P0136,P0139,P0150,P0153,P0156,P0159

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

Engine: start
Accelerate until the vehicle speed is 56

−

64 km/h (35

−

40 mph).

While keeping the accelerator pedal opening degree constant (M/T = 4th speed), keep the vehicle speed at 56

−

km/h (35

−

40 mph) and travel for 120 seconds or more. (During monitor)

Return the vehicle to the shop, then turn the ignition switch to the "LOCK" (OFF) position.
Confirm that the diagnostic trouble code (DTC) is not output.
If DTC P0130 is output, refer to DTC P0130

−

Sensor Circuit Malfunction (Bank 1 Sensor 1)

P.13B-109

If DTC P0133 is output, refer to DTC P0133

−

Sensor Circuit Slow Response (Bank 1 Sensor 1)

P.13B-118

If DTC P0136 is output, refer to DTC P0136

−

Sensor Circuit Malfunction (Bank 1 Sensor 2)

P.13B-134

If DTC P0139 is output, refer to DTC P0139