Mitsubishi Eclipse. Manual — part 560
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-783
STEP 14. Check for harness damage between ignition
switch connector C-87 (terminal No. 2) and vehicle speed
sensor connector B-39 (terminal No. 1).
NOTE: Check harness after checking intermediate connectors
B-36, C-28, C-78, C-112 and C-111. If intermediate connectors
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection
. Then go to Step 17.
Q: Is the harness wire in good condition?
YES : Go to Step 15.
NO : Repair it. Then go to Step 17.
AK300425
1
2
3
B-39 (B)
AB
CONNECTOR: B-39
HARNESS CONNECTOR:
COMPONENT SIDE
AK300738
1
2
3
4
5
6
CONNECTOR: C-87
AB
HARNESS CONNECTOR:
COMPONENT SIDE
C-87
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-784
STEP 15. Check for harness damage between vehicle
speed sensor connector B-39 (terminal No. 3) and ECM
connector C-62 (terminal No. 80).
NOTE: Check harness after checking intermediate connector
B-39 If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
. Then go to Step 17.
Q: Is the harness wire in good condition?
YES : Go to Step 16.
NO : Repair it. Then go to Step 17.
STEP 16. Check for harness damage between vehicle
speed sensor connector B-39 (terminal No. 2) and ground.
AK300425
1
2
3
B-39 (B)
AB
CONNECTOR: B-39
HARNESS CONNECTOR:
COMPONENT SIDE
AK300445
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
CONNECTOR: C-62 <M/T>
C-62 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300425
1
2
3
B-39 (B)
AB
CONNECTOR: B-39
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-785
NOTE: Check harness after checking intermediate connector
B-36 If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
. Then go to Step 17.
Q: Is the harness wire in good condition?
YES : Check for harness wire between vehicle speed
sensor connector B-39 (terminal No. 3) and other
system because of short circuit to ground. Then go to
Step 17.
NO : Repair it. Then go to Step 17.
STEP 17. Using scan tool MB991958, check data list item
24: Vehicle Speed Sensor.
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) Start the engine.
(3) Set scan tool MB991958 to the data reading mode for item
24, Vehicle Speed Sensor.
• Check that the speedometer and MB991958 display
speed match when traveling at a vehicle speed of 40
km/h (25 mph).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor 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-786
DTC P0506: Idle Control System RPM Lower Than Expected
AK101629
1 2
4 5 6
3
RED
-
WHITE
RED
-
WHITE
RED
-
WHITE
RED
RED
RED
GREEN-BL
ACK
GREEN-RED
GREEN-
WHITE
BL
ACK
-YELL
OW
B-34
IDLE AIR
CONTROL (IAC)
MOTOR
BATTERY
MFI
RELAY
1
4
2
3
3
1
2
4
5
6
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
14
28
15
29
C-51 <M/T>, C-52 <A/T>
(MU803784)
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
Idle Air Control (IAC) Motor Circuit
3 4
1 2
A-18X
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