Kohler Command Pro CV980 - Manual (Page 57)

7.7
Section 7
Electrical System and Components
7
Troubleshooting DSAI Ignition Systems
‘Žȱȱ’—’’˜—ȱœ¢œŽ–ȱ’œȱŽœ’—Žȱ˜ȱ‹Žȱ›˜ž‹•Žȱ
›ŽŽȱ˜›ȱ‘Žȱ•’Žȱ˜ȱ‘ŽȱŽ—’—Žǯȱ‘Ž›ȱ‘Š—ȱ™Ž›’˜’ŒŠ••¢ȱ
Œ‘ŽŒ”’—Ȧ›Ž™•ŠŒ’—ȱ‘Žȱœ™Š›”ȱ™•žœǰȱ—˜ȱ–Š’—Ž—Š—ŒŽǰȱ
’–’—ǰȱ˜›ȱ–˜ž•ŽȱŠ“žœ–Ž—œȱŠ›Žȱ—ŽŒŽœœŠ›¢ȱ˜›ȱ
™˜œœ’‹•ŽǯȱŽŒ‘Š—’ŒŠ•ȱœ¢œŽ–œȱ˜ȱ˜ŒŒŠœ’˜—Š••¢ȱ
Š’•ȱ˜›ȱ‹›ŽŠ”ȱ˜ —ȱ‘˜ ŽŸŽ›ǰȱœ˜ȱ‘Žȱ˜••˜ ’—ȱ
›˜ž‹•Žœ‘˜˜’—ȱ’—˜›–Š’˜—ȱ’œȱ™›˜Ÿ’Žȱ˜ȱ‘Ž•™ȱ¢˜žȱ
Žȱ˜ȱ‘Žȱ›˜˜ȱ˜ȱŠȱ™›˜‹•Ž–ǯ
Ž™˜›Žȱ’—’’˜—ȱ™›˜‹•Ž–œȱŠ›Žȱ–˜œȱ˜ĞŽ—ȱžŽȱ˜ȱ
™˜˜›ȱŒ˜——ŽŒ’˜—œǯȱŽ˜›Žȱ‹Ž’——’—ȱ‘ŽȱŽœȱ™›˜ŒŽž›Žǰȱ
Œ‘ŽŒ”ȱŠ••ȱŽ¡Ž›—Š•ȱ ’›’—ǯȱŽȱŒŽ›Š’—ȱŠ••ȱ’—’’˜—Ȭ›Ž•ŠŽȱ
wires are connected, including the spark plug leads.
ŽȱŒŽ›Š’—ȱŠ••ȱŽ›–’—Š•ȱŒ˜——ŽŒ’˜—œȱęȱœ—ž•¢ǯȱŠ”Žȱ
sure the ignition switch is in the RUN position.
Test Procedure for DSAI Ignition Systems
The following procedures are provided for
›˜ž‹•Žœ‘˜˜’—ȱ’—’’˜—ȱ™›˜‹•Ž–œȱ˜—ȱȱŽšž’™™Žȱ
engines. They will allow you to isolate and pinpoint
‘ŽȱŠ’•ŽȱŒ˜–™˜—Ž—ǻœǼǯ
Special Tools Required:
• Hand Tachometer
ȱ Ȋȱ —’’˜—ȱŽœŽ›Șȱǻ
˜‘•Ž›ȱŠ›ȱ˜ǯȱŘśȱŚśśȱŖŗȬǼ
ȱ Ȋȱ ž˜–˜’ŸŽȱ’–’—ȱ’‘
ȱ Ȋȱ ž•’Ȭ–ŽŽ›ȱǻ’’Š•Ǽ
6SHFL¿FDWLRQV5HTXLUHG
ȱ Ȋȱ ™Š›”ȱ™•žȱŠ™ȱŖǯŝŜȱ––ȱǻŖǯŖřŖȱ’—ǯǼ
ȘDZȱ —’’˜—ȱŽœŽ›ȱǻ
˜‘•Ž›ȱŠ›ȱ˜ǯȱ
ȱ
ŘśȱŚśśȱŖŗȬǼǰȱ–žœȱ‹ŽȱžœŽȱ˜ȱŽœȱ’—’’˜—ȱ
on these engines. Use of any other tester can
›Žœž•ȱ’—ȱ’—ŠŒŒž›ŠŽȱꗍ’—œǯȱ‘Žȱ‹ŠĴŽ›¢ȱ˜—ȱ
‘Žȱž—’ȱ–žœȱ‹Žȱž••¢ȱŒ‘Š›ŽȱŠ—ȱ™›˜™Ž›•¢ȱ
Œ˜——ŽŒŽȱ‹Ž˜›Žȱ–Š”’—ȱŠ—¢ȱ˜ȱ‘ŽœŽȱŽœœȱ
ǻŠȱ‹ŠĴŽ›¢ȱ‘Šȱ’œȱ‘˜˜”Žȱž™ȱ˜›ȱŒ‘Š›Žȱ
‹ŠŒ” Š›ȱ ’••ȱŒ›Š—”ȱ‘ŽȱŽ—’—Žǰȱ‹žȱ’ȱ ˜—Ȃȱ
‘ŠŸŽȱœ™Š›”ǼǯȱŽȱŒŽ›Š’—ȱ‘Žȱ›’ŸŽȱ’œȱ’—ȱ—Žž›Š•ȱ
and all external loads are disconnected.
Test 1. Isolate and Verify the Trouble is Within the
Engine Ignition System
ȱ ŗǯȱ ˜ŒŠŽȱ‘ŽȱŒ˜——ŽŒ˜›œȱ ‘Ž›Žȱ‘Žȱ ’›’—ȱ‘Š›—ŽœœŽœȱ
›˜–ȱ‘ŽȱŽ—’—ŽȱŠ—ȱŽšž’™–Ž—ȱŠ›Žȱ“˜’—Žǯȱ
Separate the connectors and remove the white
”’••ȱ•ŽŠȱ›˜–ȱ‘ŽȱŽ—’—ŽȱŒ˜——ŽŒ˜›ǯȱŽ“˜’—ȱ‘Žȱ
connectors and position or insulate the kill lead
terminal so it cannot touch ground. Try to start
‘ŽȱŽ—’—Žȱ˜ȱŸŽ›’¢ȱ ‘Ž‘Ž›ȱ‘Žȱ›Ž™˜›Žȱ™›˜‹•Ž–ȱ
is still present.
DZȱ ȱ‘ŽȱŽ—’—ŽȱœŠ›œȱ˜›ȱ›ž—œȱž›’—ȱŠ—¢ȱ˜ȱ‘Žȱ
testing, you may need to ground the kill lead
to shut it down. Because you have interrupted
the kill circuit, it may not stop using the
switch.
ȱ Šǯȱ ȱ‘Žȱ™›˜‹•Ž–ȱ˜ŽœȱŠ Š¢ǰȱ‘ŽȱŽ•ŽŒ›’ŒŠ•ȱœ¢œŽ–ȱ˜—ȱ
‘ŽȱŽšž’™–Ž—ȱ’œȱœžœ™ŽŒǯȱ‘ŽŒ”ȱ‘Žȱ”Ž¢ȱœ ’Œ‘ǰȱ
wires, connections, safety interlocks, etc.
ȱ ‹ǯȱ ȱ‘Žȱ™›˜‹•Ž–ȱ™Ž›œ’œœǰȱ‘ŽȱŒ˜—’’˜—ȱ’œȱŠœœ˜Œ’ŠŽȱ
with the ignition or electrical system of the
Ž—’—ŽǯȱŽŠŸŽȱ‘Žȱ”’••ȱ•ŽŠȱ’œ˜•ŠŽȱž—’•ȱŠ••ȱŽœ’—ȱ
is completed.
c. Identify the white kill lead of the engine wiring
‘Š›—ŽœœȱŒ˜——ŽŒ˜›ǯȱœŠ‹•’œ‘ȱŠȱŒ˜——ŽŒ’˜—ȱ˜ȱŠȱ
known good ground location. The engine should
kill completely. If not, or only one cylinder is
ŠěŽŒŽǰȱ˜ȱ˜ȱŽœȱŚǰȱ‹žȱŠ•œ˜ȱŒ‘ŽŒ”ȱ‘Žȱ ‘’Žȱ”’••ȱȱ
•ŽŠȱŒ˜——ŽŒ’˜—ȱ˜›ȱ‘ŽȱŠěŽŒŽȱȱ–˜ž•Žǯȱ
Test 2. Test for Spark
ȱ ŗǯȱ ’‘ȱ‘ŽȱŽ—’—Žȱœ˜™™Žǰȱ’œŒ˜——ŽŒȱ˜—Žȱœ™Š›”ȱ
™•žȱ•ŽŠǯȱ˜——ŽŒȱ‘Žȱœ™Š›”ȱ™•žȱ•ŽŠȱ˜ȱ™˜œȱ
Ž›–’—Š•ȱ˜ȱœ™Š›”ȱŽœŽ›ȱǻ
˜‘•Ž›ȱŠ›ȱ˜ǯȱ
ŘśȱŚśśȱŖŗȬǼǰȱŠ—ȱŠĴŠŒ‘ȱŽœŽ›ȱŒ•’™ȱ˜ȱŠȱ˜˜ȱ
engine ground.
DZȱ ȱ ˜ȱŽœŽ›œȱŠ›ŽȱŠŸŠ’•Š‹•ŽǰȱŽœ’—ȱŒŠ—ȱ‹Žȱ
™Ž›˜›–Žȱœ’–ž•Š—Ž˜žœ•¢ȱ˜›ȱ‹˜‘ȱŒ¢•’—Ž›œǯȱ
˜ ŽŸŽ›ǰȱ’ȱ˜—•¢ȱ˜—ŽȱŽœŽ›ȱ’œȱŠŸŠ’•Š‹•Žǰȱ ˜ȱ
’—’Ÿ’žŠ•ȱŽœœȱ–žœȱ‹Žȱ™Ž›˜›–Žǯȱ‘Žȱœ’Žȱ
—˜ȱ‹Ž’—ȱŽœŽȱ–žœȱ‘ŠŸŽȱ‘Žȱœ™Š›”ȱ™•žȱ
•ŽŠȱŒ˜——ŽŒŽȱ˜›ȱ›˜ž—Žǯȱ˜ȱ—˜ȱŒ›Š—”ȱ
the engine or perform tests with one spark
plug lead disconnected and not grounded, or
permanent system damage may occur.