Westerbeke 3.5 SBCG - Software Diagnostics

SOFTWARE DIAGNOSTICS ·
Engine RUN State Shutdowns: (€ontinued fr~m previous page)
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