TM 5-3895-373-20 REFERENCE INFORMATION DCA CIRCUIT BATTERY/STARTER CIRCUIT - STE/CE-R TESTS 71 THROUGH 75 DESCRIPTION TEST PROCEDURES Measures the rate of change of battery resistance as an indicator of battery condition. 1. Set  ENGINE  CRANK  switch  on  DCA  housing  to TEST. Shunt: 12258937-1 DCA Test Pins: X, Y, V, and W 2. Make sure all accessory drive functions are turned OFF. Measurement Range: 0 to 999.9 milliohms per second 3. Set TEST SELECT switches to 71,  72,  73,  74,  or 75. PRE-TEST PROCEDURES Run confidence test per TM 9-4910-571-12&P. 4. Press and hold TEST button until CAL appears on display. 5. Release  TEST  button  and  wait  for  offset  value  to appear on display.  If offset value is within -150 to +150 milliohms per second, proceed.  If not, refer to DCA troubleshooting in TM 9-4910-571-12&P. POSSIBLE  ERROR  MESSAGES E002 Transducer not connected. 6.  Press and release TEST button. E005 Offset not performed. 7.  When GO appears on display, engage starter for 2 E008 VTM does not detect battery voltage. seconds or until one of the following appears on the E013 VTM cannot use data received. .9.9.9.9 E020 No first peak information was detected by the A valid resistance reading VTM. An error message E021 VTM cannot calculate result because current is over current probe’s range. 8. Observe displayed value.  Displayed values are in milliohms  per  second.    Expected  maximum  value is 25 milliohms per second. NOTE: If .9.9.9.9 is displayed, battery resistance change is more than the range of the VTM and cannot be measured.  If E013 is displayed, then check battery connections and correct as necessary.  Repeat step 7.  If E013 persists after 3 tests, VTM cannot perform test. ALTERNATOR OUTPUT VOLTAGE - STE/ICE-R TEST 82 DESCRIPTION TEST PROCEDURES Measures voltage at alternator output at +24 volt battery terminal. 1. Set TEST SELECT switches to 82. DCA Test Pins: V and W Measurement Range: 0 to 32 Vdc 2. Start paving machine, set engine at MAX, and turn all 3. Press and release TEST button. PRE-TEST  PROCEDURES Run confidence test per TM 9-4910-571-12&P. 4. Observe displayed value.  Displayed values are in volts   DC.      Expected   display   value   is   26   volts, minimum.    If  .9.9.9.9  is  displayed,  voltage  is  not within test range. POSSIBLE ERROR MESSAGES None 2-383