TM 5-5420-226-20-1 ( Symptom-74 DETAILED TROUBLESHOOTING PROCEDURE -. T SUPPORT SYSTEM -   PERSONNEL HEATER (CONTINUED) T 0- .0 TO   VEHICLE GROUND n 3A ,0 “a CONTACTF Check control panel    accessories harness connector (CKT   405)   for   electrical power. Second Technician (Operator’s Station) l   Set    HEATER MASTER switch OFF First Technician (Commander’s Station) l   Reinstall    basket-control panel    heater harness connector at   basket disconnect. Second Technician (Commander’s Station) l   Displace master control panel (page 10-33). . Disconnect basket-control panel heater harness connector from master control panel. l   Connect    red   probe   of   meter   to   contact    F  (CKT    405)   of control panel    heater harness connector and   black    probe to   ground. l   Set    HEATER MASTER switch ON. l   Check   if   meter   indicates 18  to    30   volts dc. Does    meter indicate 18  to   30   volts    dc? I 1^{22‘.Replacemastercontrolpanel} personnel heater harness (page 10-85). l   Connect heater to basket disconnect harness to personnel heater fuel   pump. L_NOYES ^Wr-alt (CKT   405) @@ Q l l l l 9 Inspect basket-control panel heater harness for    bent/bro- ken connector contacts or loose    CKT   405   wire   at   rear   of connectors. Repair    connectors if  defective (page 10-298). If connectors are not defective, notify support maintenance of  defective bas- ket-control panel heater harness. Connect basket-control panel heater harness to master control panel. Install master control panel (page 10-33). f 1 CKT I 4 4-715