Mitsubishi Galant. Manual — part 107
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-109
STEP 7. Check connector B-15 at heated oxygen sensor
(front) 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 heated oxygen sensor
(front) harness side connector B-15.
(1) Disconnect the connector B-15 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-40 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 15.
AK000556 AB
CONNECTOR:B-15
AK000239
B-15 HARNESS
SIDE CONNECTOR
1
2
3
4
AG
AK000280
CONNECTOR : C-41
PCM
AY
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-110
STEP 10. Check for open circuit and harness damage
between heated oxygen sensor (front) connector B-15
terminal 2 and PCM connector C-40 terminal 57.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 15.
NO : Repair it. Then go to Step 15.
STEP 11. Check connector C-41 at PCM 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.
AK000556 AB
CONNECTOR:B-15
AK000280
CONNECTOR : C-40
PCM
AV
AK000280
CONNECTOR : C-41
PCM
AY
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-111
STEP 12. Check for harness damage between heated
oxygen sensor (front) connector B-15 terminal 2 and PCM
connector C-40 terminal 57.
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair it. Then go to Step 15.
STEP 13. Check for short circuit to ground and harness
damage between heated oxygen sensor (front) connector
B-15 terminal 4 and PCM connector C-41 terminal 71.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair it. Then go to Step 15.
AK000556 AB
CONNECTOR:B-15
AK000280
CONNECTOR : C-40
PCM
AV
AK000556 AB
CONNECTOR:B-15
AK000280
CONNECTOR : C-41
PCM
AY
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-112
STEP 14. Check the heated oxygen sensor (front).
(1) Disconnect the heated oxygen sensor (front) connector B-
15 and connect test harness special tool, MD998464, to the
connector on the 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 heated oxygen
sensor (front).
(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 heated
oxygen sensor (front) output voltage.
Standard value: 0.6
−−−−
1.0 V
Q: Is the voltage at the standard value?
YES : Replace the PCM. Then go to Step 15.
NO : Replace the heated oxygen sensor (front). Then go to
Step 15.
STEP 15. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to,
Procedure 4
−
Heated Oxygen Sensor Monitor and
Procedure 6
−
Other Monitor(
(2) Check the diagnostic trouble code (DTC).
Q: Is the DTC P0130 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
ACX02476
CONNECTOR : B-15
AF
HEATED OXYGEN
SENSOR (FRONT)
AKX01625AC
BLUE
RED
BLACK
JUMPER
WIRES
WHITE
MD998464
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