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TM 10-3930-664-24 2-13.  STE/ICE VEHICLE SYSTEM DIAGNOSTIC CHECK. a. General.    This  section  lists  tests  which  may  be  used  with  STE/ICE  (Simplified  Test  Equipment  for  Internal Combustion   Engines)   to   locate   malfunctions   that   can   occur   in   the   vehicle.      The   listed   tests   can   be   used   during troubleshooting, corrective maintenance, and after routine adjustments. b. The STE/ICE system is  primarily  used  in  conjunction  with  the  vehicle  electrical  system.    The  listed  tests  cannot cover all possible malfunctions that  may  occur.    If  a  particular  malfunction  is  not  discussed,  refer  to  the  troubleshooting diagrams. c. Description  and  Operation.    STE/ICE  (Figure  2-1)  is  portable  and  operates  off  of  the  vehicles  24  volt  system. Refer to STE/ICE manual for detailed operating instructions.  The STE/ICE kit consists of the following major components: (1) Vehicle Test Meter (VTM).  The VTM is a tool for testing electrical and mechanical components.  Readings are  either  pass/fail  or  digital  display  (PSI,  RPM,  volts,  etc.).    The  VTM  interfaces  with  the  vehicle  being tested by either a transducer from the Transducer Kit (TK) or by the Diagnostic Connector Assembly (DCA). Power from the VTM is drawn from the vehicle batteries or from an alternate power source. (2) Transducer Kit (TK).  The TK is a covered tray inside the transit case that contains transducers, fittings, and connectors which are used during testing. (3) Electrical Cable Assemblies’.  The cable assemblies are included for power and testing.  Test procedures refer  to  the  cable  assemblies  by  number  for  quick  identification.    Each  cable  also  has  a  name  which describes its use.  A quick reference to W1, for example, would indicated the DCA cable.  Connectors on the  cable  are  identified  by  a  number  proceeded  by  either  a  P  or  E,  such  as  P1  or  E2.    Cable  assembly numbers and names are listed below. (a) W1 DCA Cable (b) W2 Test Probe Cable (c) W3 Ignition Adapter Cable (d) W4 Transducer Cable (2 each) (e) W5 Power Cable NOTE When  cables  are  connected,  large  key  noted  by  white  stripe  on  cable  connector  mates  with large keyway of connector on VTM transducer. d. Vehicle Diagnostic Connector Assembly (DCA).  The DCA connector of the vehicle is located on the transmission right side panel (Figure 2-2). e. STE/ICE  Testing Procedures.   The vehicle test procedures contained in the STE/ICE Technical Manual consist of two test sequences; GO-Chain sequences and NO-GO-Chain sequences.  A GO-Chain sequence is a logical sequence of tests preformed to determine the general condition of the vehicle.  If the vehicle fails any of the GO-Chain tests, the test will direct the user to a specific NO-GO test for further testing.  The NO-GO tests are used to isolate what is wrong with the vehicle. 2-12

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