Onan DYC Series Operator's Manual And Parts Catalog page 26

T A B L E 3.
T R O U B L E S H O O T I N G ENGINE SHUTDOWN SYSTEM
(Engines with only one fault lamp)
SYMPTOM
C O R R E C T I V E ACTION
1. Engine stops cranking and fault
lamp lights, after cranking
approximately 75 seconds.
1. See engine service manual for
troubleshooting fuel system.
After correcting problem, reset engine
monitor relay by placing Run-Stop/
Reset-Remote switch to Stop/Reset,
then back to the required running
position.
2. Fault lamp lights immediately
after engine starts.
2. Check for:
. Overspeed condition as engine starts.
3. Fault lamp lights and engine
shuts down after running for
a period.
3. Check the following:
a. Oil level. Engine will shut down
if sensor is closed.
b. Check engine manual for
troubleshooting oil system.
c. High engine temperature. Check
coolant level; check water flow
(city water cooled systems);
check radiator for free air flow,
and fan belts for tightness. See
engine manual for troubleshooting
cooling system. .
d. Check for faulty oil pressure
sensor or faulty high engine
temperature sensor.
4. Engine runs, shuts down and
cranks for 75-seconds. Cranking
cycle stops; fault lamp lights.
4. Check fuel supply.
5. Fault lamp lights, no fault
exists.
5. To check a no-fault condition,
disconnect leads from T B l l terminals
29, 30 and 31. If fault lamp lights
with leads disconnected, replace
engine monitor board. Reconnect leads.
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