TM 5-3895-373-20 2.21. DCA CIRCUIT DIAGNOSTICS. These   DCA   diagnostic   tests   can   be   run   anytime   you think there is a problem  with the paving  machine’s DCA or  its  on  board  transducers.    Do  not  use  this  paragraph to  test  the  STE/ICE-R  and  its  cables  and  transducers. Refer to TM 9-4910-571-12&P to test the STE/ICE-R and for using the STE/ICE-R in the TK mode to substitute for tests run through the DCA. The   following   table   gives   a   cross   reference   between DCA tests and TK tests.  Use this cross reference to find out how to substitute TK tests for DCA tests if you have suspect DCA transducer or interconnect wiring.  A wiring diagram  of  the  DCA  assembly  is  provided  for  reference on page 2-378.  STE/ICE-R test procedures are provided for reference on pages 2-379 through 2-382. DCA to TK Cross Reference DCA TK TEST PARAMETER USE TK TEST MEASUREMENT POINTS 10 RPM 34-PULSE TACHOMETER WITH A W4 CABLE 10 Put in place of tachometer generator. 24 FUEL PRESSURE 17-BLUE PRESSURE TRANSDUCER 50 Install in place of DCA fuel pressure transmitter. 26 FUEL FILTER PRESSURE DROP 17-BLUE PRESSURE TRANSDUCER 50 Install   TK   pressure   transducer    in    place    of    DCA differential   pressure   switch.   Measure   pressure   on both sides of filter; calculate difference If STEACE-R indicates  pass  and  pressure  difference  is  less  than 15.5 psi, or if STE/ICE-R indicates fail and pressure difference  is  greater  than  11.5  psi,  DCA  differential pressure switch is OK 28 AIR CLEANER PRESSURE DROP 22-RED PRESSURE TRANSDUCER 48 Install  in  place  of  DCA  air  cleaner  output  pressure transmitter. 30 AIR PRESSURE 22-RED  PRESSURE TRANSDUCER 47 Install   in   place   of   DCA   turbosupercharger   output pressure transmitter. 35 OIL PRESSURE 17-BLUE PRESSURE TRANSDUCER 50 Install in place of DCA oil pressure transmitter. 36 OIL FILTER PRESSURE DROP 17-BLUE PRESSURE TRANSDUCER 50 Install  TK  transducer  in  place  of  DCA  oil  differential pressure switch.  Measure pressure on both sides of filter;    calculate    difference.        If    difference    equals STE/ICE readout +3.0 psi,  DCA  differential  pressure switch is OK. 38 COOLANT TEMPERATURE N/A N/A Check DCA temperature transducer in boiling water. If  temperature  indication  is  from  210.5°to  213.5°F, temperature transducer is OK. 67 BATTERY VOLTAGE NONE  REQUIRED 67 VTM takes data through W5 (POWER) cable. 68 STARTER VOLTAGE W2 CABLE 89 Attach  red  clip  to  starter  positive  terminal,  black  to battery side of shunt. 70 STARTER SOLENOID VOLTAGE W2 CABLE 89 Attach   red   clip   to   solenoid   'S'   terminal,   black   to starter case. 71 STARTER CURRENT 11-CURRENT PROBE 90 Put probe around negative battery cable between the shunt and the battery. 72 CURRENT  FIRST PEAK 11-CURRENT PROBE 72 Put probe around negative battery cable between the shunt and the battery. 73 BATTERY RESISTANCE 11-CURRENT PROBE 73 Put probe around negative battery cable between the shunt and the battery. 74 STARTER CIRCUIT RESISTANCE 11-CURRENT PROBE 74 Put probe around negative battery cable between the shunt and the battery. 75 BATTERY RESISTANCE CHANGE 11-CURRENT PROBE 75 Put probe around negative battery cable between the shunt and the battery. 2-375