2.0 Marine Diagnostics
78
Reference Manual
1- Mercury Marine
IAC TEST WITH NO ENGINE RPM
– continued
THE IAC VALVE WILL
MOVE IN THE STEPS
YOU HAVE SELECTED
PRESS 1 TO CONTINUE
Press the 1 key.
ENGINE RPM
0
IAC DELTA %
10
PRESS MODE TO EXIT
VISUAL INSPECTION
OF ALL CONNECTORS.
CHECK ALL GROUND
CONNECTIONS.
Press the
↓
key.
CHECK ALL
COMPONENTS FOR
CORRECT SPECS. SEE
SYSTEM INFO.
Press the
↓
key.
↓
↑
Press the
↑
key. As you step in a
positive direction you should hear a
buzzing sound as the IAC valve
opens. This sound may be difficult
to hear unless the IAC is removed
from the engine for testing pur-
poses only. Entering a negative
step (a value less than zero) may
have no affect on the valve since it’s
already closed. Example: a DELTA
% of -20 will cause no change since
the valve is closed.
or
ENGINE ISN’T RUNNING
DURING THIS TEST
PRESS 1 TO CONTINUE
PRESS MODE TO CANCEL
Press the 1 key.
↓
↓
↑
↑
CHECK HARNESS
CONTINUITY BETWEEN
ECM AND SUSPECT
COMPONENT.
Press
To EXIT
Summary of Contents for SmartCraft Systems
Page 9: ...Preface 7 Reference Manual NOTES...
Page 28: ...1 0 Introduction 26 Reference Manual NOTES...
Page 29: ...2 0 Marine Diagnostics 27 Reference Manual OVERVIEW 1 Mercury Marine...
Page 98: ...2 0 Marine Diagnostics 96 Reference Manual NOTES...
Page 107: ...3 0 Glossary of Terms 105 Reference Manual NOTES...