DCA-125USJ (50 HZ)—TROUBLESHOOTING (ENGINE CONTROLLER)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 17 (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 17. ENGINE CONTROLLER TROUBLESHOOTING
Sympton | Possible Cause | Solution | |
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| Low oil level? | Fill oil level. | |
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Low oil pressure light | Oil pressure sending unit failure? | Replace oil pressure sending unit. | |
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is on. | Time delay malfuntion in Controller? | Refer to dealer. | |
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| Wire shorted? | Inspect/repair wire. | |
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| Low coolant level? | Fill coolant level. | |
Low coolant level light |
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Sending unit failure? | Replace sending unit. | ||
is on. | |||
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| Low battery voltage? | Replace/charge battery. | |
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| Fan belt tension incorrect? | Tighten/replace fan belt. | |
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| Air flow is not circulation through radiator? | Clean/repair radiator grill. | |
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| Doors open? | Close doors. | |
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High coolant | Exhaust leaking? | Replace/repair gaskets or faulty part. | |
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temperture light is on. | Generator being overloaded? | Check/reduce load. | |
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| Thermostat failure? | Replace thermostat. | |
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| Air intake blocked? | Clear all air intakes. | |
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| Temperature switch failure? | Replace temperature switch. | |
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Overcrank light is on. | No or low Fuel? | Fill fuel level. | |
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Controller needs to be calibrated? | Refer to dealer. | ||
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| RPM engine speed too high? | Adjust RPM. | |
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Overspeed light is on. | Governor actuator needs to be adjusted? | Adjust governor actuator. | |
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Governor controller needs to be adjusted? | Adjust governor controller. | ||
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| Engine Controller needs to be calibrated? | Refer to dealer. | |
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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. | |
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