TM 9-2320-364-20-3 2-2468 14.  LHS DOES NOT UNLOAD IN AUTO MODE (CONT). LHS operates in MAN HA   position. LHS operates in MAN MF   position. Proximity switch (hook arm up)   adjustment OK. Wire 1485 OK. Hydraulic selector switch OK. Wire 1461 OK. Wire 1435 OK. Proximity switch (hook arm up)   OK. Wire 1466 faulty. LHS control assembly faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Continuity test. STE/ICE-R #91. If wire 1466 is loose, faulty or shorted to ground, 22 to 28 vdc will not be present at LHS control assembly. YES NO Repair wire 1466 (see schematic Fig 2-52) or notify DS Maintenance. Verify repair, go to Step 10 of this Fault. 8. Is continuity measured on wire 1466 at harness connector MC81, terminal E and ground with LHS junction box terminal 5 jumpered to ground? 7. Replace proximity switch (hook arm up) (Para 7-38).   Verify repair, go to Step 10 of this Fault. YES NO LHS operates in MAN HA   position. LHS operates in MAN MF   position. Proximity switch (hook arm up)   adjustment OK. Wire 1485 OK. Hydraulic selector switch OK. Wire 1461 OK. Wire 1435 OK. Proximity switch   faulty. Wire 1466 faulty. LHS control assembly faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. STE/ICE-R #89. If proximity switch is faulty, 22 to 28 vdc will not be present at LHS junction box, terminal 5. WARNING WARNING Are 22 to 28 vdc measured at LHS junction box, terminal 5 with hook arm up and 0 vdc measured with hook arm up? Read   WARNING on Page 2-2469 Read   WARNING on Page 2-2469