SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
General Diagnostic Tests
IMPORTANT: These tests are for MEFI 1 and MEFI 2 Engines only. MEFI 3 diagnostic
tests will be provided as soon as available. References to 454 cid / 502 cid engines
are MEFI 1, references to 7.4L engines are MEFI 2.
IMPORTANT: Non-scan tool refers to the CodeMate Tester.
On-Board Diagnostic (OBD) System Check (Non-Scan)
e
g
461
451
ORN/BLK
h
i
b
f
a
j
WHT/BLK
k
l
d
c
m
n
a - ECM/DLC 15 Amp Fuse
b - DLC Connector
c - Marine Diagnostic Code Tool
d - ECM, Injector Knock Sensor Module 10 Amp Fuse
e - (ORN-Some models)
f - (BLK-Some models)
g - Serial Data
h - ECM Ground
i - ECM Ground
j - Diagnostic Test Terminal
k - Malfunction Indicator Lamp
l - Ignition Feed
m - Battery Feed
n - Battery Feed
Index
90-861326--1
MARCH 1999
Page 5E-51
| 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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