Evinrude & Johnson E75DPLSCB, Service Manual, Page: 106 / 349

104
SYSTEM ANALYSIS
DIAGNOSTIC PROCEDURES
DIAGNOSTIC
PROCEDURES
Visual Inspections
Inspect wiring and electrical connections. Disas-
semble and clean all corroded connections.
Replace damaged wiring, connectors, or termi-
nals. Repair any shorted electrical circuits.
•
Refer to
ELECTRICAL HARNESS CONNEC-
TIONS
on p. 121.
•
Refer to
WIRING DIAGRAM
at the back of this
manual.
•
Refer to
CONNECTOR SERVICING
on p. 148.
Make sure all ground connections are clean and
tight. Refer to
GROUND CIRCUITS
on p. 123.
Inspect spark plugs for wear, oil fowling, or dam-
age. A rich or lean running condition or evidence
of internal engine damage could be identified by
the appearance of the spark plugs.
Check the fuse and the emergency stop switch
lanyard.
Operational Inspections
Run the outboard to confirm actual symptoms
before performing any unnecessary procedures.
Inspection should include the following:
•
Make sure the outboard can be cranked easily,
with no mechanical binding.
•
Check the EMM LED Indicators for system sta-
tus information. Refer to
EMM LED INDICA-
TORS
on p. 107.
•
Check the Evinrude Diagnostics software Hard
Faults and Stored Faults screens for current
service codes. Correct any problems and clear
the codes before further troubleshooting. Refer
to
Stored Service Codes (Faults)
on p. 96.
Check the diagnostics software Profiles , History ,
and Persistent Faults screens for evidence of
abnormal operation.
1. Main engine harness ground
2. Ground stud (battery)
002292
1
2
Stored Faults Review Screen
006625
Profiles Screen
005170