Symptom-9 FROM STEP o²⁹ DETAILED TROUBLESHOOTING PROCEDURE VEHICLE OPERATION -  POWERPLANT, STARTING (Continued) I r^WARNING— After    disconnecting ground   straps, do   not   allow    them    to   contact any metal   surface. Check   manifold   heater   fuel   return   solenoid   for operation. First Technician (Front of   Crew Compartment) l   Disconnect three battery ground straps (page 10-268). Second Technician (Commander’s Station) l   Connect fuel    line    to   tee   at   manifold heater solenoid valve. l   Displace battery slave    cable connector from starter feed    harness connector at   bulkhead disconnect (page 10-298). First Technician (Front of   Crew Compartment) l   Connect three battery ground staps (page 10-268). Both Technicians (Rear Grille Doors) l   Remove    transmission shroud (page 9-2). First Technician (Operator’s Station) l   Set   MASTER BATTERY switch ON. l   At    the    same   time    press   STARTER button, and press manifold preheat switch several times, then release. Second Technician (Rear Grille Doors) l   Listen   for   manifold heater fuel    return solenoid to click when preheat switch is   pressed. Does   manifold   heater   fuel  return   solenoid   click? s BATTERY \ v’” SLAVE TM    5-5420-226-20-1 \ ~ CABLE c    STAR}’ER FEED l   Check   for   electrical   power   at manifold   heater   spark   plug connectors. o l   See  Step 47 . 7 TA106928 4-239