Engine Troubleshooting (Chart) - Westerbeke 10.0 EGTD Operator's Manual

ENGINE TROUBLESHOOTING
!ENGINE SHUTDOWN/CHECK ENGINE LIGHT
ELECTRONIC CONTROLLER
The Electronic Control Unit (ECU) monitors and controls all
aspects of the drive engines operation. The unit is factory
programmed and the programming can not be altered. The
ECU is mounted on the engine block adjacent to the fuel
injection pump and controls the injection pumps operation. If
an operating fault occurs, the ECU will shutdown·the engine
and illuminate the Check Engine LED. When the operating
fault has. been investigated and corrected, the ECU must be
re-set to re-start the engine. To re-set the ECU, turn the DC
breaker on the control panel OFF, then ON.
NOTE:
Engine
shutdown (check engine LED illuminated) requires ECU
software for proper troubleshooting. This ECU software
and communication cable
is
available from the ECU
manufacturer: Woodward, Inc./Aerospace.
ENGINE SHUTDOWN
ELECTRONIC CONTROLLER
PN.8404·1021
WOODARD AEROSPACE
CHECK ENGINE/LED IS IllUMINATED
PROBLEM
PROBABLE CAUSE VERIFICATION/REMEDY
-
LOW OIL PRESSURE 1. Oil level low/oil leak. 1. Check oil level, add oil and repair leak.s.
2. Lack of oil pressure.
2. Test oil pressure. If OK, test oil pressure sendor,
inspect oil filter, inspect oil pump.
3. AGround connection. 3. Check ground connection.
4. Faulty oil pressure switch. 4. Check sensor/replace.
HIGH COOLANT 1. Check system coolant level. 1. Add coolant. Check for leaks.
TEMPERATURE 2. Sea water pump. 2. Inspect impeller/pump/replace.
3. Check water pump drive belt. 3. Adjust belt tension, replace belt.
4. Faulty temperature switch. 4. Check sensor/replace.
5. Ground connection. 5. Check ground circuit.
BATIERY VOLTAGE
(HIGH DC/LOW DC)
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 battery. 4. Load test battery.
GENERATOR FREQUENCY 1. Check engine speed. 1. Check speed setting.
Overspeed
2. Check fuel supply. 2. Inspect filters/replace filters. Test fuel pump operation.
Underspeed 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. Generator Shut-down. 5. Check MPU (voltage cranking.
(underspeed fault)
(Check MPU- coil resistance)
HIGH EXHAUST
1. Check sea water flow.
1. Inspect thru hull fitting, hose and strainer. Correct
(External Fault)
as needed.
2. Faulty exhaust temperature switch. 2. Test/replace.
3. Ground connection.
3. Check ground circuit.
4 •. Sea water pump.
. 4. Inspect lrnpeller/reptace.
.
- - - - .
5. Faulty tire suppression system.
5. By-pass system/check .
Under no circumstances should the Electronic Controller
be
removed form the unit without consulting
with tbe factory first.
25