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PROBLEM
LCD DISPLAY DOES
NOT ILLUMINATE
LOW OIL PRESSURE
HIGH COOLANT TEMPERATURE
HIGH EXHAUST TEMPERATURE
BATTERY VOLTAGE
GENERATOR FREQUENCY
Overspeed (steady LED)
Underspeed (flashing LED)
LED DISPLAY EDGES
TURN PINK
WAITING FOR ECU
ENGINE TROUBLESHOOTING
LCD DISPLAY FAULTS
PROBABLE CAUSE
VERIFICATION/REMEDY
1. Check battery.
1. Battery on.
2. 20 amp breaker off.
2. Turn breaker on.
3. Loose display connection.
3. Check all cable connections.
4. 1 amp fuse blown (faulty).
4. Check/replace. Determine cause
1. Oil level low/oil leak.
1. Check oil level, add oil and repair leaks.
2. Lack of oil pressure
2. Test oil pressure. If OK, test oil pressure sendor, inspect
oil filter, inspect oil pump.
3. Ground connection.
3. Check ground connection.
4. Faulty control module (ECU).
4. Inspect all the plug connections/replace.
5. Faulty oil pressure sensor.
5. Check sensor/replace.
1. Check system coolant level.
1. Add coolant. Check for leaks.
2. Sea water pump.
2. Inspect impeller/pump/replace.
3. Check water pump drive belt.
3. Adjust belt tension, replace belt.
4. Faulty temperature sensor.
4. Check sensor/replace.
5. Ground connection.
5. Check ground circuit.
6. Faulty control module (ECU).
6. Check plug connections/replace.
1. Check sea water flow.
1. Inspect thru hull fitting, hose and strainer. Correct
as needed.
2. Faulty exhaust temperature switch.
2. TesVreplace.
3. Ground Connection.
3. Check ground circuit.
4. Faulty control module (ECU).
4. Check plug connections.
5. Sea water pump.
5. Inspect impeller/replace.
6. Faulty fire suppression system.
6. By-pass system/check.
1. Check alternator drive belt.
1. Adjust tension/replace if worn.
2. Check charge voltage.
2. Check excitation. Replace/repair alternator
3. Check battery connections.
3. Check + and - cables from battery to engine.
4. Faulty control module (ECU).
4. Check plug connections/replace.
1. Check engine speed.
1. Check speed setting.
2. Check fuel supply.
2. Inspect filters/replace filters. Test fuel pump operation.
3. Amperage load.
3. Check + and - cables from battery to engine.
4. Crank cycle with no start.
4. Check cause for no start.
(underspeed fault)
5. Faulty MPU
5. Check MPU.
Signal Cranking
Check MPU Coil resistance
Check for damage.
1. Compartment ambient temperature
1. Ventilate compartment.
too high.
Note: Heat will often change the color of an LCD
display. This will not effect t(le operation of the engine.
1. ECU and LCD display not compatible
1. Check compatibility with Westerlink or NMEA.
2. Loose cable connection.
2. Check all cable connections.
3. Panel DC breaker OFF.
3. Turn ON, check DC voltage across breaker.
I
4. Blown 12A fuse
4. Check/replace fuse. Check DC voltage across fuseholder
5. Terminating Resistors.
5. Check all terminating resistors are in place. 120 ohm
per resister measured across pin #4 and #5.
6. Battery Voltage to ECU.
6. Check between pins P2-24 and P2-25. P2 ECU plug
unplugged from ECU. Power turned ON. If voltage is
present, ECU is faulty.
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Table of Contents
Troubleshooting
