Mitsubishi Eclipse. Manual — part 159
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-129
STEP 10. Check for open circuit between intake air
temperature sensor connector B-14 and ECM connector
C-53 <M/T> or PCM connector C-50 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 11.
NO : Repair it. Then go to Step 11.
AK300078
3
4
5
1
2
6
7
CONNECTOR: B-14
AB
B-14 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK300417
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
CONNECTOR: C-53 <M/T>
C-53 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300414
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
C-50 (GR)
CONNECTOR: C-50 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-130
STEP 11. 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 P0113 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem
AK000655
1 2
BL
ACK
YELL
OW
-GREEN
92 <M/T>
57 <A/T>
83 <M/T>
44 <A/T>
C-60 <M/T>
(MU803772)
C-54 <A/T>
(MU803781)
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
ENGINE COOLANT
TEMPERATURE SENSOR
B-11
(MU802406)
2
1
5V
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 6162 63
64 65 66
47
41
Engine Coolant Temperature Sensor Circuit
AK300052
ENGINE COOLANT
TEMPERATURE
SENSOR
CONNECTOR: B-11
AB
B-11 (B)
AK300060
ECM
CONNECTOR: C-60 <M/T>
AE
C-60 (G)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-131
.
CIRCUIT OPERATION
• 5-volt voltage is applied to the engine coolant
temperature sensor output terminal (terminal No.
1) from the ECM (terminal No. 83) <M/T> or PCM
(terminal No. 44) <A/T> via the resistor in the
ECM <M/T> or PCM <A/T>. The ground terminal
(terminal No. 2) is grounded with ECM (terminal
No. 92) <M/T> or (terminal No. 57) <A/T>.
• The engine coolant temperature sensor is a neg-
ative temperature coefficient type of resistor. It
has the characteristic that when the engine cool-
ant temperature rises the resistor decreases.
• The engine coolant temperature sensor output
voltage increases when the resistor increases
and decreases when the resistor decreases.
.
TECHNICAL DESCRIPTION
• The engine coolant temperature sensor converts
the engine coolant temperature to a voltage and
output it.
• The ECM <M/T> or PCM <A/T> checks whether
this voltage is within a specified range.
.
DESCRIPTIONS OF MONITOR METHODS
Engine coolant temperature sensor output voltage
does not change for specified period when
engine coolant temperature sensor output volt-
age at engine start is over 7
°C (45°F).
.
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
.
AK300060AB
C-54 (GR)
PCM
CONNECTOR: C-54 <A/T>
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-132
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• Engine coolant temperature was 7°C (45°F) or
more when the engine started.
Judgement Criteria
• Engine coolant temperature fluctuates within 1°C
(1.8
°F) after 5 minutes have passed since the
engine was started.
• However, time is not counted if any of the follow-
ing conditions are met.
1. Intake air temperature is 60
°C (140°F) or
more.
2. Volume airflow sensor output frequency is 70
Hz or less.
3. During fuel shut-off operation.
• The ECM<M/T> or PCM<A/T> monitors for this
condition once during the drive cycle.
.
OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function
−OBD-ll Drive
Cycle
−Procedure 6−Other Monitor
START
END
YES
NO
NO
YES
MALFUNCTION
GOOD
300secs HAVE PASSED?
|dT| < 1˚C(1.8˚F)
MONITORING CONDITIONS?
START MEASURING THE MINIMUM AND MAXIMUM
TEMPERATURE FROM ENGINE START
CALCULATE THE DIFFERENCE OF THE MINIMUM AND
THE MAXIMUM TEMPERATURE FROM ENGINE START;dT
YES
NO
AK301425
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