TM   5-5420-226-20-1 Symptom-27 DETAILED TROUBLESHOOTING PROCEDURE T VEHICLE OPERATION -   HULL POWER (Continued) Check basket-control panel starting harness connector    (CKT   459A)   at  basket   disconnect    for  elec- trical   power. Second   Technician (Operator’s Station) l  Set   MASTER   BATTERY   switch   OFF. First   Technician (Commander’s Station) l  Displace basket-control panel starting harness connector (CKT   459A)   at   basket   disconnect. “•    Connect   red  probe  of meter  to contact   E (CKT   459A)  of basket-control panel    starting harness connector and black   probe   to  ground. Second   Technician (Operator’s Station) l  Set   MASTER   BATTERY   switch   ON. First   Technician (Commander’s Station) l  Check   if  meter   indicates   18  to   30  volts   dc. Does   meter   indicate    18  to   30  volts   dc? E E BASKET DISCONNECT CKT I *I *’”4 Em J N \/- DEVICE CONTACT % -- FOR   CLARITY QUADRANT ASSEMBLIES NOT   SHOWN . harness for bent/broken connector contacts or    loose CKT 459A wire at rear of connectors. l  Repair   connectors    if  defective (page    10-298). l  If connectors are not defective, notify support maintenance of a    defective front accessory harness. l  Install   basket-control panel starting harness connector to   basket disconnect. l  Connect front accessory harness connector to   reverse polarity protection device. l  install fioor access cover (page    17-9). TA107O67 4-378