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2.0 Marine Diagnostics
IAC TEST WITH ENGINE RPM
ENGINE MUST BE
IDLING AND AT
OPERATING TEMP.
CONTINUE? 1=YES
Press the 1 key.
USE THE
KEY TO
OPEN THE IAC VALVE.
USE THE
TO KEY TO
CLOSE THE IAC VALVE.
Press the
key.
RPMS INCREASE AS IAC
OPENS OR DECREASE
AS IAC CLOSES.
PRESS 1 TO CONTINUE
Press the 1 key.
ENGINE RPM
IAC DELTA %
PRESS MODE TO EXIT
Press the
or
change the IAC valve posi-
tion resulting in some RPM
change.
Press MODE to exit test.
DID ENGINE RPM
CHANGE?
1=YES
2=NO
Press the 1 key.
Select Test:
1–ENGINE RPM
2–NO ENGINE RPM
Press
To EXIT
76
1- Mercury Marine
2=NO
738
10
key should
Press the 2 key.
5 SPECIAL FUNCTIONS
– continued
VISUAL INSPECTION
OF ALL CONNECTORS.
CHECK ALL GROUND
CONNECTIONS.
CHECK ALL
COMPONENTS FOR
CORRECT SPECS. SEE
SYSTEM INFO.
Press the
key.
Press the
key.
CHECK HARNESS
CONTINUITY BETWEEN
ECM AND SUSPECT
COMPONENT.
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