MULTIQUIP Power DCA85USJ2 Operation And Parts Manual page 65

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown,
use Table 20 (Engine Controller Troubleshooting) as a basic guideline for troubleshooting the Microprocessor Engine Controller
unit (MPEC). If the problem cannot be remedied, consult our company's business offi ce or service plant.
Symptom
Low oil pressure light is on.
Low coolant level light is on.
(Optionally installed)
High coolant temperature
light is on.
Overcrank light is on.
Overspeed light is on.
Loss of MPU light(s) or on.
DCA85USJ2 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (03/22/11) — PAGE 65
TROUBLESHOOTING (ENGINE CONTROLLER)
Table 20. Engine Controller Troubleshooting (MPEC)
Possible Problem
Low oil level?
Oil pressure sending unit failure?
Time delay malfunction in controller?
Wire shorted?
Low coolant level?
Sending unit failure?
Low battery voltage?
Fan belt tension incorrect?
Air fl ow is not circulating through radiator?
Doors open?
Exhaust leaking?
Generator being overloaded?
Thermostat failure?
Air intake blocked?
Temperature switch failure
No or low fuel?
Controller needs to be calibrated?
RPM engine speed too high?
Governor actuator needs to be adjusted?
Governor controller needs to be adjusted?
Engine controller needs to be calibrated?
Magnetic pick up out of adjustment?
Magnetic pick up dirty?
Solution
Fill oil level.
Replace oil pressure sending unit.
Refer to dealer.
Inspect/repair wire.
Fill coolant level.
Replace sending unit.
Replace/charge battery.
Tighten/replace fan belt.
Clean/repair radiator grill.
Close doors.
Replace/repair gaskets or faulty part.
Check/reduce load.
Replace thermostat.
Clean all air intakes.
Replace temperature switch.
Fill fuel level.
Refer to dealer.
Adjust RPM.
Adjust governor actuator.
Adjust governor controller.
Refer to dealer.
Adjust magnetic pick up.
Clean magnetic pick up.