TM 10-3930-675-20-1 0042 00-5 TOPHANDLER SLEWING TROUBLESHOOTING - CONTINUED 0042 00 Table 3. Error Code 255 - Tophandler Clockwise Slewing, Wiring Circuit Failure Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error    Code    255    -    Tophandler    Clockwise Slewing, Wiring Circuit Failure - Continued b. If  voltage  is  not  present, enter   “DIAG   ATTACH- MENT 12 (16)” menu and check   current   of   SLEW CW    OUTPUT.    Current should    be    present    with joystick  activated  to  slew clockwise. a. If   current   is   not   present, replace ECU (791) (WP 0076 00). b. If  current  is  present,  notify SRA. Table 4. Error Code 256 - Tophandler Clockwise Slewing, Component Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error    Code    256    -    Tophandler    Clockwise Slewing, Component Failure 1. Check wires and cables from tophandler  control  valve  to boom for obvious damage. Repair or replace damaged wires (WP 0111 00). 2. Disconnect electrical connector 6008 from tophandler clockwise slewing solenoid. Place ignition switch to ON position. Error code  255  will  be  displayed. Perform voltage check. If 20-25V is present at connector 6008, replace clockwise slewing solenoid (WP 0169 00). 3. Disconnect  connector  X188 from tophandler junction box at end of boom. Place ignition switch  to  OFF  position  and check    continuity    between connector 6008 pin 1 and pin 2   and   between   connector 6008  pin  1  and  pin  2  and chassis. a. If  continuity  is  not  present, repair  or  replace  connectors (WP 0111 00). b. If   wiring   harness   requires replacement, notify DS Maintenance. DIAG TOP LIFT  12(16)         OUTPUT/INPUT SLEW CW    0mA    0mA SLEW CCW   0mA    0mA