Mitsubishi Galant. Manual — part 134
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-217
STEP 3 Check the evaporative emission ventilation
solenoid.
(1) Disconnect the evaporative emission ventilation solenoid
connector D-13.
(2) Measure the resistance between evaporative emission
ventilation solenoid side connector terminal 1 and 2.
Standard value: 17
−−−−
21
Ω
Ω
Ω
Ω
[at 20
°°°°
C (68
°°°°
F)]
Q: Is the resistance at the standard value?
YES : Go to Step 4.
NO : Replace the over vent valve module. Then go to Step
12.
STEP 4. Check the power supply voltage at evaporative
emission ventilation solenoid harness side connector D-
13.
(1) Disconnect the connector D-13 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 and ground.
•
Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the voltage normal?
YES : Go to Step 6.
NO : Go to Step 5.
STEP 5. Check connector A-21X at MFI relay for damage.
Q: Is the connector in good condition?
YES : Check connectors D-15, C-71 and C-17 at
intermediate connector for damage, and repair or
replace as required. Refer to GROUP 00E, Harness
Connector Inspection(
). If intermediate
connectors are in good condition, repair harness wire
between MFI relay connector A-21X terminal 1 and
evaporative emission ventilation solenoid connector
D-13 terminal 2 because of open circuit or short circuit
to ground. Then go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
ACX02516
CONNECTOR : D-13
AG
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
FUEL TANK
AK000004
2
1
EVAPORATIVE EMISSION
VENTILATION SOLENOID
AB
AKX01502
D-13 HARNESS SIDE
CONNECTOR
1
2
AF
AK000555AB
CONNECTOR : A-21X
MFI RELAY
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-218
STEP 6. Check the power supply voltage at PCM connector
C-39 by backprobing
(1) Do not disconnect the connector C-39.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 35 and ground by
backprobing.
•
Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the voltage normal?
YES : Go to Step 9.
NO : Go to Step 7.
STEP 7. Check connector C-39 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
STEP 8. Check for open circuit and short circuit to ground
between evaporative emission ventilation solenoid
connector D-13 terminal 1 and PCM connector C-39
terminal 35.
NOTE: Check harness after checking intermediate connectors
D-15,C-71 and C-17. If intermediate connectors are damaged,
repair or replace them. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
AK000303
C-39 CONNECTOR
HARNESS SIDE VIEW
1
9
24
2
10 11
25
3
12
26
4
13
27
5
19
32
6
20 21
33
7
22
34
8
23
35
14
28
1516
29
17
30
18
31
AC
AK000280
CONNECTOR : C-39
PCM
AW
ACX02516
CONNECTOR : D-13
AG
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
FUEL TANK
AK000280
CONNECTOR : C-39
PCM
AW
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-219
STEP 9. Check connector C-39 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
STEP 10. Check for harness damage between MFI relay
connector A-21X terminal 1 and evaporative emission
ventilation solenoid connector D-13 terminal 2.
NOTE: Check harness after checking intermediate connectors
D-15,C-71 and C-17. If intermediate connectors are damaged,
repair or replace them. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair it. Then go to Step 12.
AK000280
CONNECTOR : C-39
PCM
AW
AK000555AB
CONNECTOR : A-21X
MFI RELAY
ACX02516
CONNECTOR : D-13
AG
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
FUEL TANK
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-220
STEP 11. Check for harness damage between evaporative
emission ventilation solenoid connector D-13 terminal 1
and PCM connector C-39 terminal 35.
NOTE: Check harness after checking intermediate connectors
D-15,C-71 and C-17. If intermediate connectors are damaged,
repair or replace them. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 12.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
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 P0446 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
ACX02516
CONNECTOR : D-13
AG
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
FUEL TANK
AK000280
CONNECTOR : C-39
PCM
AW
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