SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Scan Tool Normal Specifications (Idle / Warm Engine / Closed Throttle /
Neutral)
SCAN POSITION
UNITS DISPLAYED
TYPICAL DATA VALUE
Memory Calibration Check
Sum
Varies with Software revision
in ECM
Calibration and Check Sum
Oil Press/IO Level (See Note)
Engine Overtemp
OK/LO
OK
OK/Overheating
OFF/ON
OK
Lanyard Stop Mode
OFF
NOTE: MCM will read I/O Level and MIE will read Trans.
MEFI 1 - ECM Connector Chart For 454/502 Mag MPI and 8.2L
MPI
The following chart will aid in diagnosis of symptoms. These voltages were derived from a
known good engine. The voltages shown were done with the electrical system intact and
operational. These are voltage requirements to operate the different circuits.
CAUTION
DO NOT attempt to obtain these voltages by probing wires and connectors. Serious
damage could result in loss of engine operation or wiring damage. Voltages can
vary with battery conditions
a
J-1
J-1 Input Connector (Front)
a - Shaded Area Denotes Pin Connector Location
Index
90-861326--1
MARCH 1999
Page 5E-3
| 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...