TM10-3930-660-20 Table 2-2. Electrical Troubleshooting (Cont’d) MALFUNCTION TEST OR INSPECTION CORRECTIVE  ACTION MLRS ATTACHMENT GROUP 18. ONE OR MORE FORK, CARRIAGE, OR ATTACHMENT   FUNCTIONS NOT WORKING Step 1. Check for defective electrical joystick controller. Test and, if necessary, replace electric joystick assembly, para. 8-19. Step 2. Check  for  shorted  or  damaged  connector  plug(s)  on  joystick  harness and boom electrical cable bulkhead connector at rear of boom, and for broken or damaged wire(s) and/or loose connections. Check connections and wires for continuity. Check continuity between the electric joystick and MLRS valve. Refer to electrical schematic, page F/O-2 and paragraphs 8-46 and 8-48. Replace wires as necessary, para. 8-46 and 8-48. 19. FORKS WILL NOT AUTOLEVEL Step 1. Check that fork autoleveler switch is on. Move control to  ON position,  see  TM1O-393O-66O-1O. Step 2. Check fork autoleveler switch for defects. Replace fork autoleveler switch if defective, para. 8-21. Step 3. Check for damaged or broken wire(s) from toggle switch to fork autoleveler switch. Repair or replace wire(s) as necessary, para. 8-46 and 8-47. Step 4. Check for defective fork autoleveler switch or circuit board. Test  fork  autoleveler  switch  or circuit  board  and  replace  if  defective, para. 8-20 and 8-21. 2-21