OPERATOR'S MANUAL MAINTENANCE

Section C - Electrics
Basic System Operation
Alternator/No Charge Warning
C-92 C-92
9803/9880-3
Alternator/No Charge Warning
Operation
C030360GB-2
Fig 82.
The output of the alternator is monitored by the ECU1 and
a warning alarm sounded if the output voltage falls below
a set value.
When the value of the alternator input, ECU1 i/p 3 (A-9)
falls below 23 volts or above 32 volts, the ECU1 sends a
CAN message to the EMS which in turn illuminates the
warning lamp.
If the engine is running, as detected by the RPM message
from the ECM, then the internal buzzer on the EMS is
sounded and the message "ALTERNATOR" is displayed in
addition to the warning light.