Electrical System
39
32 690 01 Rev. D
KohlerEngines.com
Test DSAM
1. Trace red power source lead from DSAM to harness connection. Separate connector and connect red lead of a
DC voltmeter to harness terminal. Trace ground lead (green) from SAM to grounding screw. Connect black
voltmeter lead to eyelet terminal of ground lead or ground screw/bolt. Check voltage with key switch in both
START and RUN positions. A minimum of 7.25 volts must be present.
a. If correct voltage is not measured, connect black voltmeter lead directly to negative (-) post of battery and test
voltage again in both key positions. If correct voltage is now indicated, check ground circuit connections. If
ground screw/bolt or any other fasteners in ground circuit are black (oxide-coated), replace them with zinc
plated (silver colored) fasteners.
b. If correct voltage is still not indicated, check harness connector terminal for a good connection and crimp to
lead. Then trace power source circuit back through harness, key switch, etc., looking for any poor connections,
or faulty circuits.
Condition
Possible Cause
Conclusion
Incorrect voltage is measured.
Voltage
Connect black voltmeter lead directly
to negative (-) post of battery and test
voltage again in both key positions.
If correct voltage is still not indicated,
check harness connector terminal for
a good connection and crimp to lead.
Then trace power source circuit back
through harness, key switch, etc.,
looking for any poor connections, or
faulty circuits.
Correct voltage is measured.
Voltage
Check ground circuit connections.
If ground screw/bolt or any other
fasteners in ground circuit are black
(oxide-coated), replace them with zinc
plated (silver colored) fasteners.
2. Disconnect all of DSAM leads, isolating it from engine. Test DSAM with tester 25 761 40-S, using instructions
following, or use TT-5152 provided with tester. If DSAM tests bad, replace it.
3. Reattach DSAM leads, verifying a snug fit at ignition module terminals. If any connections do not feel snug,
disconnect lead, lightly pinch female terminal with a pliers, and recheck fit.
4. Seal base of ignition module connections with GE/Novaguard G661 or Fel-Pro Lubri-Sel dielectric compound.
Beads should overlap between two connections to form a solid bridge of compound. Do not put any compound
inside connectors.
5. Test for spark to be sure system is working, before you reinstall blower housing. If there is still a spark problem on
one side, replace that ignition module and recheck spark.
