TM 5-5420-226-20-1 Symptom-5 DETAILED TROUBLESHOOTING PROCEDURE VEHICLE OPERATION -  POWERPLANT. STARTING ( -Y ‘- ‘(Continued) ‘ :heck engine disconnect harness (CKT    76)   at   right fuel  pump    connector for   electrical power. $econd    Technician (Operator’s Station) l First l First l l l Set   MASTER BATTERY switch OFF. Technician (Commander’s Station) Install front accessory harness connector to   bulkhead disconnect (page 10-270). Technician (Rear of   Crew Compartment) Remove right fuel   tank ac:ess panel (page 17-7). Disconnect engine disconnect harness connector (CKT 76)   from capacitor connector and    housing assembly at   right fuel    tank fuel    pump. Connect red    probe of   meter to   CKT 76   of   engine disconnect harness connector and    black probe to ground. Second Technician (Operator’s Station) l   Set    MASTER BATTERY switch ON. First Technician (Crew Compartment) l   Check   if  meter    indicates 18  to   30   volts    dc. Does   meter indicate 18  to   30   volts    dc? inspect engine disconnect harness for   bent/broken connector contacts or   loose CKT   76   wire   at   rear   of connectors. Repair   connectors if  defective (page    10-298). If  connectors are   not defective, notify support maintenance of   a ,defective engine disconnect harness. Connect engine disconnect harness    connector (CKT   76)  to capacitor and   housing assembly at  right  fuel   tank   fuel pump. I TO  VEHICLE ii GROUND \ ~ FOR   CLARITY QUADRANT ASSEMBLIES NOT   SHOWN I CKT I BULKHEAD RIGHT FUEL DISCONNECT K PUMP   (CONTACT CONNECTOR NOT   MARKED) CONTACT TA106859 . 4-170