Westerbeke 3.5 SBCG Operator's Manual page 47

SOFTWARE DIAGNOSTICS ·
Engine RUN State Shutdowns:
(€ontinued
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Warning Description Parameters
Possible cause
• dead battery
Battery Voltage Low
Less than 10 volts
o
blown fuse
12
o
faulty regulator or charging circuit
o
loose connection or corroded wiring
o
faulty exhaust temperature switch
13
Exhaust Temperature High
Open circuit
o
loose connection or corroded Wiring
o
seawater flow blocked
.
14
External Alarm Open circuit
• external alarm fault (i.e. Fireboy)
o
loose connection or corroded Wiring
Wideband 02 Sensor (WB02)
· ECU measures
o
excessiyely rich or lean combustion
15
Reading Out of Table
A <.70 or A> 2.oo, which
• loose connection or corroded wiring
is out of the table range
o
oxygen sensor faulty
Wideband 02 Sensor (WB02)
A reading not crossing
o
excessively rich or lean combustion
16
Failure to Cross Stoich
above and below
A=l.OO
at
o
dirty or clogged fuel injector(s)
least once per minute
o
insufficient fuel supply or pressure
Wideband
02
Sensor (WB02)
Heater current out of
., loose connection or corroded wiring
17
Heater failure
normal range
• oxygen sensor faulty
35