TM   5-5420-226-20-1 Symptom-14 DETAILED TROUBLESHOOTING PROCEDURE FROM STEP VEHICLE OPERATION -  POWERPLANT, RUNNING (i) (Continued) r Check   voltage   regulator   connector    from   pin  A  to pin  H  for  continuity. First l l l l l l Technician (Commander’s Station) If  installed,    connect    smoke   generator switch   harness to  air   cleaner   blower   relay. Reconnect front   accessory    harness    to  smoke generator switch   harness,    or   to  air   cleaner   blower relay   if  smoke   generator is  not   installed. Disconnect front   accessory    harness    connector (CKT 1,  2,  415A,   478)   from   voltage   regulator. Set  meter   to  OHMS    Xl    scale   and   “zero”    meter,   or use  STE/ICE Test   No.   91   (page   4-85). Connect    red   probe   of  meter   to  contact A  of  voltage regulator connector. Connect    black   probe   of  meter   to  contact H  of voltage   regulator connector. l  Check   if  meter   indicates    continuity. Does  meter   Indicate   continuity? F. l l l l Inepect    front accessory harness for   bent/broken connector contacts or   loose CKT   415A   wire   at  rear   of connectors. Repair   connectors If defective (page   10-298). If  connectors are   not defective, notify support maintenance of   a  defective front    accessory harness. Reconnect front    accessory harness connector to   voltage regulator. Install   floor    access    cover (page   17-9). VOL1 0 Oc OA   OB Eo   o~ ‘o  Q ~o . -$ 0.( -’ Q ;: .n# .- - . 1,,, -. ’-- 0- n + 0 II ‘“   :0 / .J’ - REGULATOR - FLOOR ACCESS HOLE “ (COMMANDER’S STATION) 4 Replace   voltage   regulator (page   10-18). NO 6 1 ‘ D+ti TA106986 4-297