Section 2
DESCRIPTION
16
Figure 2---5 Air Inlet System (typical)
provided to shut down the compressor when the en-
gine oil pressure becomes insufficient. The low
speed switch is provided to shutdown the compres -
sor if engine speed falls below 1500 RPM.
2.10 SHUTDOWN SYSTEM DESCRIPTION
The Shutdown System and Annunciation Module
(SSAM) continually monitors the status of the com-
pressor . In the event of a shutdown condition, the
SSAM will shutdown the compressor and flash the
appropriate code on the instrument panel annun-
ciator light. The flash code will remain active (flash-
ing) until the ignition switch is turned OFF. The flash
codes are as follows:
1 flash : high compressor temperature
2 flashes: high engine coolant temperature
3 flashes: low engine oil pressure
4 flashes: low engine speed
5 flashes: low fuel level (optional)
The SSAM also provides startup logic for the com-
pressor. When the ignit ion switch is placed in the
ON position, the annunciator light will come on for
30 seconds. During this 30 second period, ignition
switch activation to the START position will engage
the engine starter. The low engine oil pressure
switch and the low engine speed switch will remain
inactive during the this 30 second period. At the end
of the 30 second period, the annunciator light will
go off and the engine STA RT cycle will be disabled.
At this time, all safety system checks become ac-
tive including low fuel level (if equipped).
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