GENERAL SYSTEM DIAGNOSTICS
SERVICE MANUAL NUMBER 23
MEFI 1 - 454/502 Mag MPI and 8.2L MPI Symptom Chart (J-1
Circuits)
See page 5E-4 for NOTES
Circuit
(CKT)
Function Number Color Ignition
Normal Voltage
Diagnostic
Trouble
Codes
Pin
Wire
Possible
Symptoms
Pin
Engine
(#)
ON
Running
DTC(s)
Poor Fuel
Economy,
Poor
Performance
Detonation
Knock
Sensor
Signal
J1-1
485
BLK
YEL
9.5V
9.5V
43
14
Poor
Performance,
Exhaust
ECT Sig-
nal
1.95V
(NOTE 2) (NOTE 2)
1.95V
J1-2
410
Odor, Rough
Idle RPM
Reduction
J1-3
J1-4
Not Used
Not Used
–
–
–
–
–
–
–
–
–
–
–
–
Lack Of
Data From
Other
Engine
(Dual
Master/
Slave
J1-5
916
YEL
B+
B+
None
Engine
Only)
Discrete
Switch
J1-6
931
BRN
–
–
None
Incorrect
Idle, Poor
Performance
Diagnos-
tic Test
WHT/
BLK
J1-7
J1-8
451
–
B+
–
B+
–
None
–
Not Used
–
–
Poor
Performance,
Surge, Poor
Fuel
Economy,
Exhaust
Odor
Map Sig-
nal
LT
GRN
1.46V
(NOTE 3)
J1-9
432
417
4.9V
33
21
Poor
Performance
And
Acceleration,
Incorrect
Idle
TP Sig-
nal
DK
BLU
.62V
.62V
(NOTE 4) (NOTE 4)
J1-10
Index
Page 5E-10
90-861326--1 MARCH 1999
| 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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Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...