SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
MEFI 1 - 454/502 Mag MPI and 8.2L MPI Symptom Chart (J-2 Circuits)
(Continued)
Circuit
(CKT)
Function Number Color Ignition
Normal Voltage
Diagnostic
Trouble
Codes
Pin
Wire
Possible
Symptoms
Pin
Engine
(#)
ON
Running
DTC(s)
Ignition
Control
Ref. Low
0
0
BLK/
RED
Poor Perfor-
mance
J2-6
J2-7
J2-8
463
None
None
None
(NOTE 5) (NOTE 5)
Port Fuel
Jumper
901
430
WHT
–
–
–
Ignition
Control
Ref. High
PUR/
WHT
5V
1.6V
No Restart
Fuel
Pump
Relay
Driver
DK
GRN/
WHT
0
J2-9
465
B+
None
No Start
–
(NOTE 5)
J2-10 Not Used
–
–
–
0
–
–
0
–
–
Coolant
Over
temp.
Improper
Audio Warn-
ing
DK
GRN
J2-11
112
–
None
–
J2-12 Not Used
–
–
Rough Un-
stable or In-
correct Idle
IAC “A”
J2-13
BLU/
BLK
Not Us-
able
Not
Usable
442
None
Low
Rough Un-
stable or In-
correct Idle
IAC “B”
J2-14
GRN/ Not Us-
Not
Usable
443
450
None
None
Low
WHT
able
Rough Run-
ning, Lack
Of Power,
Poor Perfor-
mance
0
0
Injector
J2-15
BLK/
WHT
Ground
(NOTE 5) (NOTE 5)
J2-16 Not Used
J2-17 Not Used
J2-18 Not Used
J2-19 Not Used
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Rough Run-
ning, Poor
Idle, Lack Of
Performance
Fuel
Injector
Ground
0
0
BLK/
WHT
J2-20
J2-21
450
467
None
None
(NOTE 5) (NOTE 5)
Rough Idle,
Lack Of
Power,
Injector
Driver
DK
BLU
B+
B+
Stalling
Index
90-861326--1
MARCH 1999
Page 5E-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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