Electrical System
37
32 690 01 Rev. D
KohlerEngines.com
Test Timing Advance (DSAI and DSAM only)
1. Make a line near edge of flywheel screen with a marking pen, chalk, or narrow tape.
2. Connect an automotive timing light to cylinder that had good spark.
3. Run engine at idle and use timing light beam to locate line on screen. Draw a line on blower housing next to line
on screen. Accelerate to full throttle and watch for movement of line on screen relative to line on blower housing.
If both cylinders had good spark, repeat test on other cylinder.
Condition
Possible Cause
Conclusion
Line on screen did not move away
from line on blower housing during
acceleration.
Ignition
Test ignition modules and
connections.
Lines made on blower housing not
90° apart.
Test Ignition Modules and Connections (DSAI only)
1. Remove blower housing from engine. Inspect wiring for any damage, cuts, bad crimps, loose terminals, or broken
wires. Check that connections are oriented properly on terminals of modules.
2. Disconnect leads from ignition module(s) and clean all of terminals (male and female) with aerosol electrical
contact cleaner to remove any old dielectric compound, dark residue, dirt, or contamination. Disconnect spark
plug leads from spark plugs.
3. Using a multi-meter, check that a proper ground is established between ground (black) lead of DSAI module
(closest to spark plug lead) and a known good ground location on engine.
4. Turn key switch to ON position and check for 12 volts at center/power (red) lead terminal of DSAI module. Use
same ground location for multi-meter as in checking for timing advance.
Condition
Possible Cause
Conclusion
All tests are OK but module has no
spark or fails to advance.
Ignition Module
Replace affected module.
Any test is BAD.
Ignition Module or Connections
Determine cause and fix as required;
retest.
Test Ignition Modules and Connections (DSAM only)
NOTE: Resistance values apply only to modules that
have been on a running engine. New service
modules may have higher resistance until they
have been run.
1. Remove blower housing from engine. Inspect wiring
for any damage, cuts, bad crimps, loose terminals,
or broken wires.
2. Disconnect leads from ignition module(s) and clean
all of terminals (male and female) with aerosol
electrical contact cleaner to remove any old
dielectric compound, dark residue, dirt, or
contamination. Disconnect spark plug leads from
spark plugs.
Ignition Module Resistance Table
4
2 1
3
24 584 36-S
(2-1/16 in. High)
Digital
Ohmmeter
24 584 36-S
(2-1/16 in. High)
From No.
1 to 4
590
to 616 ohms
From No.
2 to 4
183
to 208 ohms
From No.
3 to 4
8000 to 40,000
ohms
3. Remove one of mounting screws from each ignition module. Look in mounting hole with a flashlight and use a
small round wire brush to remove any loose rust from laminations inside mounting hole.
4. Use a digital ohmmeter to check resistance values of ignition modules and compare them to table. When testing
resistance to laminations, touch probe to laminations inside screw hole, as some laminations have a rust
preventative coating on surface which could alter resistance reading.
Condition
Possible Cause
Conclusion
All resistance values are within
ranges specified in table.
---
Test DSAM.
At least 1 resistance value is not
within ranges specified in table.
Ignition Module
Ignition module is faulty and should
be replaced.
