Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 274
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-295
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-51 terminal 16 <M/T> or PCM connector
C-52 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
ACX02514 AK
EVAPORATIVE
EMISSION
PUREGE
SOLENOID
VALVE
CONNECTOR:B-33
ACX02514 AK
EVAPORATIVE
EMISSION
PUREGE
SOLENOID
VALVE
CONNECTOR:B-33
AK000225
CONNECTOR : C-51<M/T>, C-52<A/T>
C-52
C-51
PCM<A/T>
ECM<M/T>
AJ
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-296
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 (
).
(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) <3.0L ENGINE>
13B-297
DTC P0446: Evaporative Emission Control System Vent Control Malfunction
AK000703
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
35
C-51<M/T>,C-52<A/T>
(MU803784)
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
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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-298
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
Test Conditions
•
Battery positive voltage is between 10 V and 16
V.
•
The engine is running.
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
AK000225
CONNECTOR : C-51<M/T>, C-52<A/T>
C-52
C-51
PCM<A/T>
ECM<M/T>
AJ
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