Mitsubishi Eclipse. Manual — part 417
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-211
STEP 13. Check for harness damage between engine
coolant temperature sensor connector B-11 (terminal No.
1) and ECM connector C-58 (terminal No. 44) <M/T> or PCM
connector C-55 (terminal No. 44) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.
AK300435
1
2
CONNECTOR: B-11
AB
B-11 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300462
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
CONNECTOR: C-55 <A/T>
C-55 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300748
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
CONNECTOR: C-58 <M/T>
AB
C-58 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-212
STEP 14. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Procedure 6 −
Other Monitor
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0125 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
DTC P0128 : Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
.
TECHNICAL DESCRIPTION
• The ECM <M/T> or PCM <A/T> checks the time
for the engine coolant temperature to reach the
judgment temperature.
.
DESCRIPTIONS OF MONITOR METHODS
Engine coolant temperature does not reach 77
°C
(171
°F) within specified period after cold start.
.
MONITOR EXECUTION
Once per driving cycle
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Volume airflow sensor
• Engine coolant temperature sensor
• Intake air temperature sensor
.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-213
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• Engine coolant temperature is between −10°C
(14
°F) and 77°C (171°F) when the engine is
started.
• The engine coolant temperature − intake air tem-
perature is 5
°C (9°F) or less when the engine is
started.
• The intake air temperature when the engine is
started
− intake air temperature is 5°C (9°F) or
less.
• The volume airflow sensors output frequency is in
the low frequency (50
− 100Hz or less) state for 5
minutes or less.
Judgment Criteria
• The time for the engine coolant temperature to
rise to 77
°C (171°F) takes longer than approxi-
mately 14 to 21 minutes.
• The ECM <M/T> or PCM <A/T> monitors for this
condition once during the drive cycle.
.
OBD-ll DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• The thermostat is faulty
• ECM <M/T> failed.
• PCM <A/T> failed.
START
END
YES
NO
NO
YES
MALFUNCTION
GOOD
TIME HAVE PASSED
AFTER STARTING?*
ENGINE COOLANT TEMP.
>=77˚C (171˚F)
*: See DTC SET CONDITIONS-JUDGMENT CRITERIA
MONITORING
CONDITIONS?
NO
YES
AK204044
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-214
DIAGNOSIS
STEP 1. Check the cooling system.
Refer to Engine Cooling Diagnosis
Q: Is the cooling system normal?
YES : Replace the ECM <M/T> or PCM<A/T>. Then check
that the DTC P0128 does not reset.
NO : Repair it. Then check that the DTC P0128 does not
reset.
DTC P0130: Heated Oxygen Sensor Circuit (bank 1, sensor 1)
AK101597
4
1 2
3
BL
UE
BL
ACK
BL
ACK
GREEN
B-27
MU802605
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
RIGHT BANK HEATED OXYGEN
SENSOR (FRONT)
FROM MFI RELAY
TO ECM
OR PCM
1
2
3
4
49<M/T>*1
57<A/T>*3
72<M/T>*2
72<A/T>*4
NOTE
*1: ECM connector C-58 <M/T>
*2: ECM connector C-62 <M/T>
*3: PCM connector C-55 <A/T>
*4: PCM connector C-59 <A/T>
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
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97
96
100
89
78
71
90
76 77
75
72
79
97
C-62 <M/T>
(MU803783)
C-59 <A/T>
(MU803782)
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58 <M/T>
(MU803782)
C-55 <A/T>
(MU803781)
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
Right Bank Heated Oxygen Sensor (front) Circuit
S142
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