TM 9-2320-364-20-3 2-2474 15.  LHS INOPERATIVE WITH INTERFACE KIT INSTALLED. INITIAL SETUP 1. Is the LED #2 lamp ON with the engine switch ON and the hy- draulic selector switch in AUTO or MAN mode? Go to Step 6 of this Fault. START NO No mission module hooked up   to interface quick disconnect. LED #2 lamp is not ON. Wire 1790 from LED #2 lamp to   connector MC135 terminal D   faulty. Wire 1790 from connector     MC135 terminal D to connector   MC133 terminal 1 faulty. Wire 1435 between connector   MC133 terminal 2 and   connector MC135 terminal E   faulty. Wire 1435 between connector   MC135 terminal E and LED #2   lamp faulty. LED #2 lamp faulty. Wire 1790 between LED #2   lamp and relay R35 terminal 87   faulty. Relay R35 faulty. Wire 1734 between relay R35   terminal 30 and resistor faulty. Resistor faulty. Wire 1734 between resistor and   rectifier terminal AC faulty. Wire 1734 between resistor and   connector MC135 terminal B   faulty. Wire 1734 between connector   MC135 terminal B and   connector MC132 terminal 1   faulty. Wire 1435 between connector   MC132 terminal 2 and   connector MC135 terminal C   faulty. Wire 1435 between connector   MC135 terminal C and LED   #2 lamp faulty. Wire 1435 between LED #2   lamp and relay R35 terminal 85   faulty. Wire 1734 between relay R35   terminal 86 and resistor faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Visual Inspection. If LED #2 lamp is ON and LHS is inoperative, power is present up to LED #2 lamp. 2-28.  LOAD HANDLING SYSTEM (LHS) TROUBLESHOOTING (CONT). Tools and Special Tools Tool Kit, General Mechanic’s: Automotive (Item 74, Appendix G) STE/ICE-R (optional) (Item 3, Appendix G) Multimeter (Item 44, Appendix G) Equipment Condition Engine OFF, (TM 9-2320-364-10) Parking brake applied, (TM 9-2320-364-10) Wheels chocked, (TM 9-2320-364-10) YES WARNING Read   WARNING on Page 2-2475