SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
MEFI 3 - J-2 Circuits
Circuit
Diag-
nostic
Trouble
Codes
DTC(s)
Normal Voltage
Pin
Func-
tion
(CKT)
Num-
ber
Wire
Color
Possible
Symptoms
Pin
Ignition
ON
Engine
Running
(#)
J2-1
J2-3
Battery
440
ORN
BLK
B+
B+
None
No Start
TP and
IAT
Ground
0
(NOTE 5)
0
(NOTE 5)
High Idle, Rough Idle, Poor Per-
formance Exhaust Odor
813
21,23
TP 5V
Refer-
ence
J2-4
416
GRY
BLU
5V
5V
21
Lack Of Power, Idle High
Discrete
Switch
J2-7
J2-8
114
585
–
–
–
–
None
None
Discrete
Switch
TAN/
WHT
–
Ignition
Control
Ref.
PUR/
WHT
J2-10
430
5V
1.6V
None
No Restart
High
Poor Performance,
Exhaust Odor, Rough Idle
RPM Reduction
ECT
Signal
1.95V
(NOTE 2)
1.95V
(NOTE 2)
J2-11
J2-18
J2-19
410
814
416
YEL
BLK
GRY
14
33
33
MAP
Ground
0
(NOTE 5)
0
(NOTE 5)
Lack Of Performance,Exhaust
Odor, Stall
MAP 5V
Refer-
ence
Lack Of Power, Surge, Rough
Idle, Exhaust Odor
5V
–
5V
–
Discrete
Switch
Signal
J2-20
923
WHT
–
–
NOTE 1: Battery voltage for first two seconds, then 0 volts.
NOTE 2: Varies with temperature.
NOTE 3: Varies with manifold vacuum.
NOTE 4: Varies with throttle movement.
NOTE 5: Less than .5 volt (500 mV).
Index
90-861326--1
MARCH 1999
Page 5E-43
| 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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