SERVICE MANUAL NUMBER 24
DIAGNOSTICS
J-1 Circuits with MEFI 1 and MEFI 2 (Continued)
Normal Voltage
Pin
Func-
tion
Wire
Color
Pin
CKT
DTC
Possible Symptoms
Ignition
ON
Engine
Running
Knock
Sensor
Poor Fuel Economy, Poor
Performance Detonation
J1-1
J1-2
J1-4
J1-5
J1-6
485
410
931
916
931
GRN
YEL
BRN
YEL
BRN
9.5V
9.5V
43
ECT
Signal
1.95V
(NOTE 2)
1.95V
(NOTE 2)
Poor Performance, Exhaust Odor,
Rough Idle rpm Reduction
14
Discrete
Switch
Power Reduction Mode Alarm
Activation
–
B+
–
–
B+
–
None
None
None
Master/
Slave
Lack Of Data From Other Engine
(Dual Engine Only)
Discrete
Switch
Power Reduction Mode Alarm
Activation
Diag-
nostic
Test
BLK/
WHT
J1-7
451
B+
B+
None
Incorrect Idle, Poor Performance
Map
Signal
LT
GRN
1.46V
(NOTE 3)
Poor Performance, Surge, Poor Fuel
Economy, Exhaust Odor
J1-9
J1-10
J1-11
J1-13
J1-14
432
417
439
813
450
4.9V
33
TP
Signal
DK
BLU
.62V
(NOTE 4)
.62V
(NOTE 4)
Poor Performance And Acceleration,
Incorrect Idle
21
Ignition
Fused
PNK/
BLK
B+
B+
None
21,23
None
No Start
Sensor
Ground
0
(NOTE 5)
0
(NOTE 5)
High Idle, Rough Idle, Poor
Performance Exhaust Odor
BLK
ECM
Ground
BLK/
WHT
0
0
(NOTE 5) (NOTE 5)
No Start
TP 5V
Power
J1-15
J1-16
J1-18
416
440
461
GRY
ORN
5V
B+
5V
5V
B+
5V
21
Lack Of Power, Idle High
No Start
Battery
None
None
Serial
Data
ORN/
BLK
No Serial Data
Shift
Switch
J1-19
J1-21
J1-29
J1-30
923
942
814
450
WHT
PNK
BLK
0
0
None
None
33
Incorrect Idle
No Start
Lanyard
Stop
0
0
0
0
MAP
Ground
Lack Of Performance,Exhaust Odor,
Stall
(NOTE 5) (NOTE 5)
ECM
Ground
BLK/
WHT
0
(NOTE 5)
0
(NOTE 5)
None
No Start
MAP 5V
Power
Lack Of Power, Surge, Rough Idle,
Exhaust Odor
J1-31
J1-32
416
440
GRY
ORN
5V
B+
5V
B+
33
Battery
None
No Start
See Page 5G-6 For NOTES
Index
90-861327--1
OCTOBER 1999
Page 5G-7
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 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 Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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