Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 131
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-223
STEP 1. Using scan tool MB991502, check actuator test
item 08: Evaporative Emission Purge Solenoid.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the actuator test mode for item
08, Evaporative emission purge solenoid.
•
An operation sound should be heard and vibration
should be felt when the evaporative emission purge
solenoid is operated.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points (
NO : Go to Step 2.
STEP 2. Check connector B-33 at the evaporative emission
purge solenoid for damage.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then go to Step 12.
AKX01177
16 PIN
MB991502
AB
ACX02513AJ
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
CONNECTOR:B-33
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-224
STEP 3. Check the evaporative emission purge solenoid.
(1) Disconnect the evaporative emission purge solenoid
connector B-33.
(2) Measure the resistance between evaporative emission
purge solenoid side connector terminal 1 and 2.
Standard value: 30
−
34
Ω
[at 20
°
C (68
°
F)]
Q: Is the resistance at the standard value?
YES : Go to Step 4.
NO : Replace the evaporative emission purge solenoid.
Then go to Step 12.
STEP 4. Check the power supply voltage at evaporative
emission purge solenoid harness side connector B-33.
(1) Disconnect the connector B-33 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 : Repair harness wire between MFI relay connector A-
21X terminal 1 and evaporative emission purge
solenoid connector B-33 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.
ACX02513AJ
EVAPORATIVE
EMISSION PURGE
SOLENOID VALVE
CONNECTOR:B-33
AKX00342
AKX01502
1
2
B-33 HARNESS
SIDE CONNECTOR
AH
AK000226
AK000226AB
CONNECTOR : A-21X
MFI RELAY
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-225
STEP 6. Check the power supply voltage at ECM connector
C-49 <M/T> or PCM connector <A/T> C-50 by backprobing
(1) Do not disconnect the connector C-49 <M/T> or C-50 <A/
T>.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 9 <M/T> or 34 <A/T>
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-49 at ECM <M/T> or connector
C-50 at PCM <A/T> 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.
AK000300
10
1 2 3 4 5 6 7 8 9
1112 13
141516171819 20 2122 23242526
AC
<M/T>
C-49 CONNECTOR
HARNESS SIDE VIEW
AK000301
1
2
3 4
5 6
7 8
9 10 11 1213 141516 17 1819 20 21 2223
24 25
2627 2829
30 3132 33
3435
AD
C-50 CONNECTOR
HARNESS SIDE VIEW
<A/T>
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-226
STEP 8. Check for open circuit and short circuit to ground
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.
STEP 9. Check connector C-49 at ECM <M/T> or connector
C-50 at PCM <A/T> 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.
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
AK000280
C-49,C-50
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-49<M/T>,C-50<A/T>
BC
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