Kohler Command Pro CV980 - Manual (Page 56)

7.6
Section 7
Electrical System and Components
Šǯȱ ȱ‘Žȱ™›˜‹•Ž–ȱ’œȱ˜—Žǰȱ‘ŽȱŽ•ŽŒ›’ŒŠ•ȱœ¢œŽ–ȱ
˜—ȱ‘Žȱž—’ȱ’œȱœžœ™ŽŒǯȱ‘ŽŒ”ȱ‘Žȱ”Ž¢ȱœ ’Œ‘ǰȱ
wires, connections, safety interlocks, etc.
‹ǯȱ ȱ‘Žȱ™›˜‹•Ž–ȱ™Ž›œ’œœȱ‘ŽȱŒ˜—’’˜—ȱ’œȱ
associated with the ignition or electrical
œ¢œŽ–ȱ˜ȱ‘ŽȱŽ—’—ŽǯȱŽŠŸŽȱ‘Žȱ”’••ȱ•ŽŠȱ
isolated until all testing is completed.
ȱ Řǯȱ Žœȱ˜›ȱœ™Š›”ȱ˜—ȱ‹˜‘ȱŒ¢•’—Ž›œȱ ’‘ȱ
˜‘•Ž›ȱ
’—’’˜—ȱŽœŽ›ǰȱǻ
˜‘•Ž›ȱŠ›ȱ˜ǯȱŘŚȱŚśśȱŖŘȬǼǯȱ
’œŒ˜——ŽŒȱ˜—Žȱœ™Š›”ȱ™•žȱ•ŽŠȱŠ—ȱŒ˜——ŽŒȱ’ȱ˜ȱ
‘Žȱ™˜œȱŽ›–’—Š•ȱ˜ȱ‘ŽȱŽœŽ›ǯȱ˜——ŽŒȱ‘ŽȱŒ•’™ȱ˜ȱ
a good ground, not to the spark plug.
Molex Plug
(Some Models)
Figure 7-6. Digital Spark Advance Ignition (DSAI) System.
ȱ ȱ ›Š—”ȱ‘ŽȱŽ—’—ŽȱŠ—ȱ˜‹œŽ›ŸŽȱ‘ŽȱŽœŽ›ȱœ™Š›”ȱ
gap. Repeat the procedure on the other cylinder.
Ž–Ž–‹Ž›ȱ˜ȱ›ŽŒ˜——ŽŒȱ‘Žȱꛜȱœ™Š›”ȱ™•žȱ•ŽŠǯ
Šǯȱ ȱ˜—Žȱœ’Žȱ’œȱ—˜ȱꛒ—ǰȱŒ‘ŽŒ”ȱŠ••ȱ ’›’—ǰȱ
connections, and terminals on that side. If
wiring is okay, replace ignition module and
retest for spark.
‹ǯȱ ȱ‘ŽȱŽœŽ›ȱœ‘˜ œȱœ™Š›”ǰȱ‹žȱ‘ŽȱŽ—’—Žȱ
misses or won’t run on that cylinder, try a
new spark plug.
Œǯȱ ȱ—Ž’‘Ž›ȱœ’Žȱ’œȱꛒ—ǰȱ›ŽŒ‘ŽŒ”ȱ™˜œ’’˜—ȱ˜ȱ
ignition switch and check for shorted kill
lead.
Operation of DSAI Ignition Systems
DSAI Ignition System Explanation
ȱȱ’’Š•ȱœ™Š›”ȱŠŸŠ—ŒŽȱ’—’’˜—ȱœ¢œŽ–ȱǻǼȱ’œȱ
žœŽȱ˜—ȱœ˜–Žȱ–˜Ž•œǯȱ‘Žȱȱ’—’’˜—ȱœ¢œŽ–ȱ’œȱŠ—ȱ
ŠŸŠ—ŒŽǰȱŗŘȬŸ˜•ȱŸŽ›œ’˜—ȱ˜ȱ‘Žȱę¡Žȱ’–’—ȱ’—’’˜—ȱ
œ¢œŽ–ȱžœŽȱ˜—ȱ˜‘Ž›ȱ–˜Ž•œǯȱ ˜ȱ’—žŒ’ŸŽȬœ¢•Žȱ
’—’’˜—ȱ–˜ž•ŽœȱŒ˜—›˜•ȱ‘Žȱ’—’’˜—ȱ’–’—ȱ‹ŠœŽȱ˜—ȱ
Ž—’—Žȱǯȱȱ¢™’ŒŠ•ȱȱŠ™™•’ŒŠ’˜—ȱǻ’ž›ŽȱŝȬŜǼȱ
consists of the following components:
ȱ Ȋȱ ȱ–Š—ŽȱŠœœŽ–‹•¢ǰȱ ‘’Œ‘ȱ’œȱ™Ž›–Š—Ž—•¢ȱŠĜ¡Žȱ
˜ȱ‘ŽȱĚ¢ ‘ŽŽ•ǯ
ȱ Ȋȱ ˜ȱ’—žŒ’ŸŽǰȱŗŘȬŸ˜•ȱ’—’’˜—ȱ–˜ž•Žœǰȱ ‘’Œ‘ȱ
–˜ž—ȱ˜—ȱ‘ŽȱŽ—’—ŽȱŒ›Š—”ŒŠœŽȱǻ’ž›ŽȱŝȬŜǼǯ
ȱ Ȋȱ ȱŗŘȬŸ˜•ȱ‹ŠĴŽ›¢ǰȱ ‘’Œ‘ȱœž™™•’ŽœȱŒž››Ž—ȱ˜ȱ‘Žȱ
ignition modules.
ȱ Ȋȱ ȱ”’••ȱœ ’Œ‘ȱǻ˜›ȱ”Ž¢ȱœ ’Œ‘Ǽȱ ‘’Œ‘ȱ›˜ž—œȱ‘Žȱ
spark advance module to stop the engine.
• Two spark plugs.
Operation
The system provides more consistent energy to the
œ™Š›”ȱ™•žœȱŠȱŠ••ȱŽ—’—Žȱœ™ŽŽœȱ‹¢ȱžœ’—ȱ‘ŽȱŗŘȬŸ˜•ȱ
‹ŠĴŽ›¢ȱŠœȱ’œȱœ˜ž›ŒŽȱ˜ȱ™˜ Ž›ǯȱ—’—Žȱœ™ŽŽȱŠ—ȱ˜™ȱ
ŽŠȱŒŽ—Ž›ȱǻǼȱ•˜ŒŠ’˜—ȱ›ŽŽ›Ž—ŒŽȱ’—˜›–Š’˜—ȱ
’œȱ™›˜Ÿ’Žȱ‹¢ȱ‘ŽȱĚ¢ ‘ŽŽ•ȱ–Š—Žȱ›˜ž™ȱŠœȱ’ȱ
passes the ignition module. System triggering and
Ž—’—Žȱ’–’—ȱ’œȱ™Ž›˜›–Žȱ‹¢ȱŠȱ’’Š••¢ȬŒ˜—›˜••Žȱ
microprocessor. This digital control provides
›Ž™ŽŠŠ‹•ŽȱŠ—ȱŒ˜—œ’œŽ—ȱŽ—’—ŽȱŒ¢•’—Ž›ȱœ™Š›”ȱ
’–’—ǯȱŠŒ‘ȱȱ–˜ž•Žȱ™Ž›˜›–œȱ’œȱž—Œ’˜—ȱ
independently for each engine cylinder.