Multiquip DCA-70SSJU Engine Controller Troubleshooting Mpec, Sympton, Possible Cause, Solution

DCA-70SSJU SERIES —TROUBLESHOOTING (ENGINE CONTROLLER)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 21 (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 21. ENGINE CONTROLLER TROUBLESHOOTING (MPEC)

Sympton	Possible Cause	Solution
	Low oil level?	Fill oil level.
Low oil pressure light	Oil pressure sending unit failure?	Replace oil pressure sending unit.
is on.	Time delay malfuntion in Controller?	Refer to dealer.
	Wire shorted?	Inspect/repair wire.
	Low coolant level?	Fill coolant level.
Low coolant level light
	Sending unit failure?	Replace sending unit.
is on.
	Low battery voltage?	Replace/charge battery.
	Fan belt tension incorrect?	Tighten/replace fan belt.
	Air flow is not circulation through radiator?	Clean/repair radiator grill.
	Doors open?	Close doors.
High coolant	Exhaust leaking?	Replace/repair gaskets or faulty part.
temperture light is on.	Generator being overloaded?	Check/reduce load.
	Thermostat failure?	Replace thermostat.
	Air intake blocked?	Clear 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	Magnetic pick up out of adjustment?	Adjust magnetic pick up.
on.	Magnetic pick up dirty?	Clean magnetic pick up.

PAGE 60 — DCA-70SSJU SERIES — OPERATION AND PARTS MANUAL (STD) — REV. #5 (06/03/03)