Multiquip DCA300SSCU Troubleshooting Engine Controller, Engine Controller Troubleshooting MPEC

Troubleshooting (Engine Controller)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 18 (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 office or service plant.

Table 18. Engine Controller Troubleshooting (MPEC)

Symptom	Possible Problem	Solution
	Low oil level?	Fill oil level.
Low oil pressure light is on.	Oil pressure sending unit failure?	Replace oil pressure sending unit.
	Time delay malfunction in controller?	Refer to dealer.
	Wire shorted?	Inspect/repair wire.
Low coolant level light is on.	Low coolant level?	Fill coolant level.
	Sending unit failure?	Replace sending unit.
(Optionally installed)
	Low battery voltage?	Replace/charge battery.
	Fan belt tension incorrect?	Tighten/replace fan belt.
	Air flow is not circulating through radiator?	Clean/repair radiator grill.
	Doors open?	Close doors.
High coolant temperature	Exhaust leaking?	Replace/repair gaskets or faulty part.
light is on.	Generator being overloaded?	Check/reduce load.
	Thermostat failure?	Replace thermostat.
	Air intake blocked?	Clean all air intakes.
	Temperature switch failure	Replace temperature switch.
Overcrank light is on.	No or low fuel?	Fill fuel level.
	Controller needs to be calibrated?	Refer to dealer.
	RPM engine speed too high?	Adjust RPM.
Overspeed light is on.	Governor actuator needs to be adjusted?	Adjust governor actuator.
	Governor controller needs to be adjusted?	Adjust governor controller.
	Engine controller needs to be calibrated?	Refer to dealer.
Loss of MPU light(s) or on.	Magnetic pick up out of adjustment?	Adjust magnetic pick up.
	Magnetic pick up dirty?	Clean magnetic pick up.

DCA300SSC / DCA300SSCU Gen. • operation and parts manual — rev. #1 (08/10/11) — page 51