62-61753-21   
  The Inactive Alarm list is cleared in the same 
way. When  the  inactive  alarm  list  is  cleared 
both the inactive and active lists are cleared. 
Clearing  the  inactive  alarm  list  removes  the 
alarm from the microprocessor. 
Note 2  Many  electrical  circuits  may  be  tested  by 
powering the circuits without starting the en-
gine. This can be done by first setting the NO 
POWER  Configuration  to  the  ALARM  & 
SHUTDOWN selection, then leaving the unit 
disconnected from any Standby Power, plac-
ing  the  Diesel/Electric  Switch  in  the  Electric 
position,  and  placing  the  SROS  in  the 
START/RUN position. In this mode, the Run 
Relay  will  be  energized  and  the  unit  will  re-
main off. 
Note 3  Sensors  may  be  tested  at  the  component 
plug using  an  ohmmeter.  If  required,  sensor 
circuits may also be tested at the 1MP plug. 
Remove  plug  and,  using  an  ohmmeter,  test 
resistance of circuits. Be careful not to dam-
age  the  connector  pins.  (Refer  to  Section 
8.7.7  for  chart  of  resistances  for  different 
sensors.) 
Note 4  The Defrost Air Switch, RPM Sensor, Engine 
Oil  Level  Switch,  Fuel  Level  Sensor,  Door 
Switch, or HP1 can be tested as components 
alone. If required, the circuits may be tested 
at  the  2MP  plug.  Remove  plug  from  Micro-
processor  and  using  the  wiring  schematic, 
check for voltage at the appropriate terminal. 
Note 5  Some tests can only be conducted while the 
unit is operating. The unit may be started au-
tomatically  in  either  Diesel  or  Electric  by 
placing the Diesel / Electric Switch in the de-
sired  operating  position,  then  placing  the 
SROS in the START/RUN position.