Mitsubishi Eclipse. Manual — part 156
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-117
STEP 5. Check connector C-60 at ECM <M/T> or connector
C-54 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Replace the ECM or PCM. Then go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 6.
STEP 6. 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 P0112 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK300415
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
CONNECTOR: C-60 <M/T>
AB
C-60 (G)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300412
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
C-54 (GR)
CONNECTOR: C-54 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-118
DTC P0113: Intake air temperature Circuit High Input
AK300333
2 3
7
4 5 6
1
BROWN
RED
-BL
U
E
C-60 <M/T>
(MU803772)
C-54 <A/T>
(MU803781)
40 <M/T>*1
16 <A/T>*3
72 <M/T>*2
64 <A/T>*4
B-14
INTAKE AIR TEMPERATURE SENSOR
(INCORPORATED IN VOLUME
AIRFLOW SENSOR)
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
5
6
5 V
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
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
3132 33
34 35
1
10
C-50 <A/T>
(MU803784)
NOTE
*1: ECM connector C-53 <M/T>
*2: ECM connector C-60 <M/T>
*3: PCM connector C-50 <A/T>
*4: PCM connector C-54 <A/T>
Intake Air Temperature Sensor Circuit
C-53 <M/T>
(MU803771)
34
33
32
36
35
37
42
45
31
39
38
46
40 41
43 44
AK300053
CONNECTOR: B-14
AD
B-14 (B)
INTAKE AIR
TEMPERATURE
SENSOR
AK300060
ECM
CONNECTORS: C-53, C-60 <M/T>
AN
C-53 (G)
C-60 (G)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-119
.
CIRCUIT OPERATION
• Approximately 5 volts are applied to the intake air
temperature sensor output terminal (terminal No.
6) from the ECM (terminal No. 72) <M/T> or PCM
(terminal No. 64) <A/T> via the resistor in the
ECM <M/T> or PCM <A/T>. The ground terminal
(terminal No. 5) is grounded with ECM (terminal
No. 40) <M/T> or PCM (terminal No. 16) <A/T>.
• The intake air temperature sensor is a negative
temperature coefficient type of resistor. When the
intake air temperature rises, the resistance
decreases.
• The intake air temperature sensor output voltage
increases when the resistance increases and
decreases when the resistance decreases.
.
TECHNICAL DESCRIPTION
• The intake air temperature sensor converts the
intake air temperature to a voltage.
• The ECM <M/T> or PCM <A/T> checks whether
this voltage is within a specified range.
.
DESCRIPTIONS OF MONITOR METHODS
Intake air temperature sensor output voltage is out of
specified range.
.
MONITOR EXECUTION
Continuous
.
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)
• Not applicable
.
AK300060
PCM
CONNECTORS: C-50, C-54 <A/T>
AO
C-54 (GR)
C-50 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-120
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• 2 seconds or more have passed since the staring
sequence was completed.
Judgement Criteria
• Intake air temperature sensor output voltage has
continued to be 4.6 volts or higher [corresponding
to an air intake temperature of
−40°C (−104°F) or
lower] for 2 seconds.
.
OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-ll Drive Cycle −
Procedure 6
.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Intake air temperature sensor failed.
• Open intake air temperature sensor circuit, or
connector damage.
• ECM failed. <M/T>
• PCM failed. <A/T>
DIAGNOSIS
Required Special Tools:
• MB991958 (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
START
OUTPUT VOLTAGE < 0.2V
END
NO
NO
NO
YES
YES
YES
MALFUNCTION
GOOD
CONTINUOUS
FAILURE FOR 2secs
OUTPUT VOLTAGE > 4.6V
MONITORING
CONDITIONS
NO
YES
AK301424
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