Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 132

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-227

STEP 10. Check for harness damage between MFI relay
connector A-21X terminal 1 and evaporative emission
purge solenoid connector B-33 terminal 2.
Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair it. Then go to Step 12.

STEP 11. Check for harness damage between evaporative
emission purge solenoid connector B-33 terminal 1 and
ECM connector C-49 terminal 9 <M/T> or PCM connector
C-50 terminal 34 <A/T>.
Q: Is the harness wire in good condition?

YES : Replace the ECM or PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.

AK000226

AK000226AB

CONNECTOR : A-21X

MFI RELAY

ACX02513AJ

EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE

CONNECTOR:B-33

ACX02513AJ

EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE

CONNECTOR:B-33

AK000280

C-49,C-50

ECM<M/T>
OR
PCM<A/T>

CONNECTORS:C-49<M/T>,C-50<A/T>

BC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-228

STEP 12. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to,

Procedure 6

−

Other Monitor (

P.13A-5

).

(2) Check the diagnostic trouble code (DTC).

Q: Is the DTC P0443 is output?

YES : Retry the troubleshooting.
NO : The inspection is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-229

DTC P0446: Evaporative Emission Control System Vent Control Malfunction

AK000667

RED-

WHITE

RED-

WHITE

RED-

WHITE

3 4

1 2

RED

1

8

7

10

5

3

1 2

4

6

9

2

RED

RED

RED

YELLO

W

YELLO

W

YELLO

W

YELLO

W

A-21X

1

2

3

4

D-10
MU802779

BATTERY

1

2

ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>

MFI
RELAY

EVAPORATIVE
EMISSION
VENTILATION
SOLENOID

D-16
MU802355

7

2

26

9

26

24

55<M/T>
35<A/T>

C-28

7 8

5

3 4

35

34

10 11 12

2122 23 24

13 14 15

25 26 27

16

28

17

18 19 20

29

30 31

32 33

36 37

38

9

1 2

6

4

17

1

12 13 14

18

30

41

34

3

16

10

6 7

19

31

42

20

32

43

21

33

25

24

26

36

35

37

29

28

15

27

38

8 9

39 40

11

2

22

5

23

C-90

C-50<A/T>
(MU803784)

C-56<M/T>
(MU803770)

57 58

60 61

53

52

51

55

54

56

59

62

2

3 4

5 6

7 8

9

11 12 13 14 15 16 17 18 19 20

30

21 22 23

24 25

26 27 28 29

3132 33

34 35

1

10

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-230

CIRCUIT OPERATION

•

The evaporative emission ventilation solenoid
power is supplied from the MFI relay (terminal 1).

•

The ECM <M/T> or PCM <A/T> controls the
evaporative emission ventilation solenoid ground
by turning the power transistor in the ECM <M/T>
or PCM <A/T> ON and OFF.

TECHNICAL DESCRIPTION

•

To judge if there is open circuit in the evaporative
emission ventilation solenoid drive circuit, ECM
<M/T> or PCM <A/T> measures the surge
voltage of the evaporative emission ventilation
solenoid coil.

•

The ECM <M/T> or PCM <A/T> drives the
evaporative emission ventilation solenoid for 30
milliseconds. After the solenoid is turned off, the
ECM <M/T> or PCM <A/T> will check if the
solenoid coil produces a surge voltage of 2V or
more.

DTC SET CONDITIONS

Check Conditions

•

Battery positive voltage is higher than 10 V.

Judgment Criteria

•

If a surge voltage of 2 V or more is not detected
within 30 milliseconds after the evaporative
emission ventilation solenoid is driven, the ECM
<M/T> or PCM <A/T> judges that the drive circuit
is open.

•

Only one monitor during one drive cycle.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

•

Evaporative emission ventilation solenoid failed.

•

Open or shorted evaporative emission ventilation
solenoid circuit, or loose connector.

•

ECM failed. <M/T>

•

PCM failed. <A/T>

AK000226

AK000226AB

CONNECTOR : A-21X

MFI RELAY

ACX02516

CONNECTOR:D-10

EVAPORATIVE EMISSION
VENTILATION SOLENOID

AJ

AK000734 AB

CONNECTOR:D-16

AK000733AC

CONNECTOR:C-28

AK000345

CONNECTOR:C-90

AD

AK000280

C-49

C-56

ECM<M/T>
OR
PCM<A/T>

CONNECTORS:C-56<M/T>,C-50<A/T>

BG