TM 5-2420-232-10
0004
EMS INSTRUMENT CLUSTER CONTINUED
Engine Cooling Fan Inhibit Function Warning
0004
The EMS system monitors the engine cooling fan and transmits the status of the engine cooling fan inhibit switch to the
operator. When the engine cooling fan inhibit switch is pressed, the EMS will display the message "COOL FAN OFF?" on the
LCD and the internal buzzer will be activated. If no confirmation of the request is made within 3 seconds, the message will be
deleted and the buzzer turned OFF. The EMS will assume the request was an error, and the fan will not be deactivated.
If the operator presses the OK button (Figure 56, Item 5) within the 3 seconds to confirm the request, the EMS will then acti-
vate the fan disconnect system. A warning light on the front console warning light panel will be illuminated, the internal
buzzer will become active for 3 seconds, after which it will be activated for 2 seconds in every 10 seconds.
435-A0268-22
Figure 56. Engine Cooling Fan Inhibit Function Warning
04
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