Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 235
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-139
STEP 7. Check connector B-28 at right bank heated
oxygen sensor (rear) 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 15.
STEP 8. Check the continuity at right bank heated oxygen
sensor (rear) harness side connector B-28.
(1) Disconnect the connector B-28 and measure at the harness
side.
(2) Check for the continuity between terminal 2 and ground.
•
Should be less than 2 ohm.
Q: Is the continuity normal?
YES : Go to Step 11.
NO : Go to Step 9.
STEP 9. Check connector C-58 at ECM <M/T> or connector
C-55 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 15.
AK000211
CONNECTOR : B-28
AB
AK000243AB
B-28 HARNESS
SIDE CONNECTOR
2 1
4 3
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
![](/vehicles/winoney/isene/butrele/abereerera.png)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-140
STEP 10. Check for open circuit and harness damage
between right bank heated oxygen sensor (rear) connector
B-28 terminal 2 and ECM connector C-58 terminal 49 <M/T>
or PCM connector C-55 terminal 57 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 15.
NO : Repair it. Then go to Step 15.
STEP 11. Check connector C-62 at ECM <M/T> or
connector C-59 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then go to Step 15.
AK000211
CONNECTOR : B-28
AB
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
AK000225
CONNECTOR : C-62<M/T>, C-59<A/T>
C-59
C-62
PCM<A/T>
ECM<M/T>
AL
![](/vehicles/winoney/isene/butrele/zutheldal.png)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-141
STEP 12. Check for harness damage between right bank
heated oxygen sensor (rear) connector B-28 terminal 2 and
ECM connector C-58 terminal 49 <M/T> or PCM connector
C-55 terminal 57 <A/T>.
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair it. Then go to Step 15.
AK000211
CONNECTOR : B-28
AB
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
![](/vehicles/winoney/isene/butrele/bintoony.png)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-142
STEP 13. Check for short circuit to ground and harness
damage between right bank heated oxygen sensor (rear)
connector B-28 terminal 4 and ECM connector C-62
terminal 74 <M/T> or PCM connector C-59 terminal 74 <A/
T>.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair it. Then go to Step 15.
STEP 14. Check the right bank heated oxygen sensor
(rear).
(1) Disconnect the right bank heated oxygen sensor (rear)
connector B-28 and connect test harness special tool,
MB991316, to the connector on the right bank heated
oxygen sensor (front) side.
(2) Warm up the engine until engine coolant 80
°
C (176
°
F) or
higher.
CAUTION
Be very careful when connecting the jumper wires;
incorrect connection can damage the right bank heated
oxygen sensor (rear).
(3) Use the jumper wires to connect terminal 1 (red clip) to the
positive battery terminal and terminal 3 (blue clip) to the
negative battery terminal.
(4) Connect a digital volt meter between terminal 2 (black clip)
and terminal 4 (white clip).
(5) While repeatedly revving the engine, measure the right
bank heated oxygen sensor (rear) output voltage.
Standard value: 0.6
−
1.0 V
Q: Is the voltage at the standard value?
YES : Replace the ECM or PCM. Then go to Step 15.
NO : Replace the right bank heated oxygen sensor (rear).
Then go to Step 15.
AK000211
CONNECTOR : B-28
AB
AK000225
CONNECTOR : C-62<M/T>, C-59<A/T>
C-59
C-62
PCM<A/T>
ECM<M/T>
AL
ACX02493AC
CONNECTOR : B-28
RIGHT BANK
HEATED OXYGEN
SENSOR(REAR)
AKX01625 AB
BLUE
JUMPER
WIRES
BLACK
RED
WHITE
MB991316
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