TM 10-3930-675-20-1 0040 00-4 BOOM LIFTING/LOWERING TROUBLESHOOTING - CONTINUED 0040 00 Table 2. Error Code 130 - Overload Protection System Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error  Code  130  -  Overload  Protection  System Failure Overload protection system failure  occurs  due  to  an  earlier failure (error codes 131-136) on any  component  related  to  the overload protection system. Hydraulic speeds are limited and the error code will flash on the display every 5 seconds. Perform troubleshooting procedures for the original error code (error codes 131-136). Table 3. Error Code 151 - Lift Cylinder Locking Valve, Wiring Circuit Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 151 - Lift Cylinder Locking Valve, Wiring Circuit Failure 1.  Remove   ECU   (790)   cover from operator’s seat base and slide ECU mounting tray out (WP 0079 00). Release emergency stop switch (TM 10-3930-675-10) as required. 2.  Check ECU (790) connector 2 and tray grounding leads for proper connection. a. Connect any loose or disconnected connections. Push  ECU  mounting  tray  in and install cover. b. Repair or replace any damaged     connectors     (WP 0111 00). Push ECU mounting tray in and install cover. 3.  Disconnect   electrical   leads 6001 from right lift cylinder locking   valve   solenoid   and perform voltage check. Voltage  should  be  0V  with joystick   in   neutral   position and   20-25V   with   joystick activated to lower boom. If voltage is as specified, replace lift     cylinder     locking     valve solenoid (WP 0169 00). DIAG SERVO 11(13)         OUTPUT/INPUT FAN        0mA    0mA BL.VALVE 0.00V    0mA