GENERAL SYSTEM DIAGNOSTICS
SERVICE MANUAL NUMBER 23
MEFI 3 - J-1 Circuits (continued)
Circuit
Diag-
nostic
Trouble
Codes
DTC(s)
Normal Voltage
Pin
Func-
tion
(CKT)
Num-
ber
Wire
Color
Possible
Symptoms
Pin
Ignition
ON
Engine
Running
(#)
Knock
Sensor
Signal
(Only
Poor Fuel Economy,
Poor Performance
Detonation
J1-14
496
BLU
–
–
43, 44
used on
7.4L
MPI)
Injector
Driver
DK
GRN
J1-17
J1-20
468
450
B+
B+
None
None
Rough Idle, Lack Of Power, Stall
ECM
Ground
0
(NOTE 5)
0
(NOTE 5)
Rough Running, Poor Idle, Lack
Of Performance
BLK
Fuel
Pump
Relay
Driver
DK
GRN/
WHT
0
(NOTE
1&5)
J1-23
J1-24
465
B+
None
No Start
Ignition
Control
Bypass
TAN/
BLK
0
(NOTE 5)
424
29
4.5V
–
42
Lack Of Power, Fixed Timing
–
Audio
J1-26 Warning
Horn
DK
GRN
–
None
None
None
IAC
“B”
Low
GRN/
BLK
Not
Usable
Not
Usable
Rough Unstable or Incorrect
Idle
J1-27
J1-28
444
441
IAC
“A”
High
BLU/
WHT
Not
Usable
Not
Usable
Rough Unstable or Incorrect
Idle
Knock
Sensor
Signal
Poor Fuel Economy,
Poor Performance
Detonation
J1-30
J1-32
496
461
BLU
–
–
43, 44
None
Serial
Data
No Serial Data
(NOTE 6)
ORN
5V
5V
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
Page 5E-42
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 |
(1 votes, average: 5 out of 5)
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...