Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 110
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-139
STEP 10. Check for open circuit and harness damage
between heated oxygen sensor (rear) connector C-23
terminal 4 and ECM connector C-60 terminal 92 <M/T> or
PCM connector C-54 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-60 at ECM <M/T> or
connector C-57 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 (
AK000733AB
CONNECTOR:C-23
AK000280
C-54
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-54<A/T>
BB
AK000280
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-57<A/T>
BE
C-57
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-140
STEP 12. Check for harness damage between heated
oxygen sensor (rear) connector C-23 terminal 4 and ECM
connector C-60 terminal 92 <M/T> or PCM connector C-54
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.
STEP 13. Check for short circuit to ground and harness
damage between heated oxygen sensor (rear) connector
C-23 terminal 3 and ECM connector C-60 terminal 75 <M/T>
or PCM connector C-57 terminal 73 <A/T>.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair it. Then go to Step 15.
AK000733AB
CONNECTOR:C-23
AK000280
C-54
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-54<A/T>
BB
AK000733AB
CONNECTOR:C-23
AK000280
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-57<A/T>
BE
C-57
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-141
STEP 14. Check the heated oxygen sensor (rear).
(1) Disconnect the heated oxygen sensor (rear) connector C-
23 and connect test harness special tool, MB991658, 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 right bank heated
oxygen sensor (rear).
(3) Use the jumper wires to connect terminal 5 to the positive
battery terminal and terminal 6 to the negative battery
terminal.
(4) Connect a digital volt meter between terminal 3 and
terminal 4.
(5) While repeatedly revving the engine, measure the 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 heated oxygen sensor (rear). 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 P0136 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
ACX02495
HEATED OXYGEN
SENSOR (REAR)
AE
CONNECTOR:C-23
AK000122
JUMPER
WIRES
MB991658
AB
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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-142
DTC P0139: O
2
Sensor Circuit Slow Response (sensor 2)
AK000659
BL
ACK
BL
ACK
GREEN
FROM MFI RELAY
HEATED OXYGEN
SENSOR(REAR)
C-23
MU801448
TO ECM
OR PCM
ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>
75<M/T>
73<A/T>*2
92<M/T>
57<A/T>*1
C-60<M/T>
(MU803772)
C-54<A/T>
(MU803781)
C-57<A/T>
(MU803782)
NOTE
*1:PCM connector C-54<A/T>
*2:PCM connector C-57<A/T>
5
6
4
3
1
2
3 4 5 6
98
78
71
88 89
76 77
72
79
91
73
80
74
75
81
92
82 83
93
84 85
94
86 87
95 96
90
97
82
78
81
80
89 90 91 92
79
87
71
74
73
72
76
75
77
85
88
83 84
86
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58 59
60 61 62 63
64 65 66
47
41
ACX02495
HEATED OXYGEN
SENSOR (REAR)
AE
CONNECTOR:C-23
AK000280
C-54
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-54,C-57<A/T>
BD
C-57
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