Yanmar
®
600 Control Panel Operation and Troubleshooting
26 463-3000-09 Initial - 16-May-2008
General Troubleshooting
For additional information, refer to engine manufacturer troubleshooting guide.
No response from starter motor
Possible Cause Possible Remedy
No battery voltage to starter Verify wiring and battery connection (power and ground)
Battery discharged Charge or replace battery, verify alternator charging
Tripped overcurrent protection Correct fault, replace or reset overcurrent protection
No signal from control system No power to control system (see Control System Troubleshooting)
Defective starter solenoid Replace starter solenoid
Defective starter motor Replace starter motor
Engine will crank but not start
Possible Cause Possible Remedy
Engine not getting fuel Check fuel level, filter, fuel pump, verify no air in fuel lines
ECU is not functioning See Engine Troubleshooting
Tripped overcurrent protection Correct fault, replace or reset overcurrent protection
No preheat (cold condition) See Preheat Troubleshooting
Engine runs and shuts down
Possible Cause Possible Remedy
ECU shutdown Use display to view ECU diagnostic codes, use ECU diagnostic tool for
more detailed information
Circuit overload protection
tripped
Correct overload, keep control system from overheating
(over 167° F or 75° C)
Voltage transients (spikes) Add suppressor diodes, protect from nearby lightening strikes, shield
induced spikes from other equipment, add electric motor control relay
Defective control system See Control System Troubleshooting
Alternator not charging battery
Possible Cause Possible Remedy
Broken or slipping alternator
drive belt
Adjust or replace alternator drive belt
Alternator not excited Verify excitation circuit connected, replace faulty regulator
Alternator output not
connected
Install charge wire
Alternator not grounded Clean or add ground connection
Alternator faulty Replace faulty alternator
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