Mitsubishi Eclipse. Manual — part 298
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-685
.
TECHNICAL DESCRIPTION
• The ECM <M/T> or PCM <A/T> is checks the
open circuit of battery backup line.
NOTE: When the system detects an open circuit in
the battery backup line, it makes 1 failure judgment
of other diagnostic trouble codes (DTCs).
.
DESCRIPTIONS OF MONITOR METHODS
Battery backup line voltage is under specified value.
.
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
ECM
CONNECTOR: C-60 <M/T>
AE
C-60 (G)
AK300060AB
C-54 (GR)
PCM
CONNECTOR: C-54 <A/T>
AK300092
CONNECTOR: C-07
AB
C-07
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-686
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• Starting sequence was completed.
• Battery positive voltage is higher than 10 volts.
Judgement Criteria
• Battery backup line voltage has continued to be 6
volts or lower for 2 seconds.
.
OBD-ll DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Open or shorted battery backup line, or harness
damage, 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
MONITORING
CONDITIONS
CIRCUIT VOLTAGE
MALFUNCTION
CONTINUOUS
FAILURE FOR 2secs
NO
YES
YES
NO
< 6V
END
GOOD
NO
YES
AK301454
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-687
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Start the engine and run it at idle.
(5) Read the DTC.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P1603 set?
YES : Go to Step 2.
NO : The inspection is complete.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-688
STEP 2. Measure the backup power supply voltage at ECM
connector C-60 <M/T> or PCM connector C-54 <A/T> by
backprobing.
(1) Do not disconnect the ECM connector C-60 <M/T> or PCM
connector C-54 <A/T>.
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
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