Mitsubishi Eclipse. Manual — part 578
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-855
STEP 12. Using scan tool MB991958, check actuator test
item 11: Intake Manifold Tuning.
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) Set scan tool MB991958 to the actuator test mode for item
11, Intake manifold tuning solenoid.
• An operation sound should be heard and vibration
should be felt when the intake manifold tuning solenoid
is operated.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : The inspection is complete.
NO : Retry the troubleshooting.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-856
DTC P1603: Battery Backup Circuit Malfunction
AK103041
RED
-WHITE
RED
-WHITE
WHITE
WHITE
BATTERY
60 <M/T>
66 <A/T>
BATTERY
BACKUP
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
9 20A
8
RELAY
BOX
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
Battery Backup Circuit
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)
5
1
4
8
7
2
6
3
C-07
MU801333
AK000312AJ
CONNECTOR:C-07
AK300244
CONNECTOR: C-55 <A/T>
AG
PCM
C-55 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-857
.
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
.
AK300091
CONNECTOR: C-58 <M/T>
ECM
AC
C-58 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-858
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.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Open or shorted battery backup line, or connec-
tor damage.
• ECM failed. <M/T>
• PCM failed. <A/T>
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (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
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