TM 10-3930-675-20-1 0037 00-1 AUXILIARY PUMP TROUBLESHOOTING 0037 00 THIS WORK PACKAGE COVERS Error Code 169 - Tophandler Emergency Function Sup- ply Valve, Open or Short Circuit Failure Error Code 411 - Auxiliary Pump, Control Current Short Circuit Failure Error  Code  417  -  Auxiliary  Pump,  Input  from  Switch Failure INITIAL SETUP References TM 10-3930-675-10 Current Supply (A34738.0200) (WP 0199 00-31) ECS Electrical Servo (A34648.0200) (WP 0199 00-5) Auxiliary Pump (A34746.0200) (WP 0199 00-47) NOTE • Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations that locate critical components. • Refer also to illustration at end of work package for component location. Table 1. Error Code 169 - Tophandler Emergency Function Supply Valve, Open or Short Circuit Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error   Code   169   -   Tophandler   Emergency Function Supply Valve, Open or Short Circuit Failure 1.  Remove   ECU   (790)   cover from operator’s seat base and slide ECU mounting tray out (WP 0079 00). 2.  Check ECU (790) connector 2 and tray grounding leads for proper connections. a.  Connect any loose or disconnected connections. Push  ECU  mounting  tray  in and install cover. b. Repair  or  replace  damaged connectors   (WP   0111   00). Push  ECU  mounting  tray  in and install cover. 3.  Disconnect    electrical    con- nector from tophandler supply  valve  solenoid  6041, located  under  cab  on  frame rail,    and    perform    voltage check. a.  If    20-25V    is    present    at connector 6041, replace tophandler supply valve solenoid (WP 0169 00). b. If    no    voltage    is    present, continue troubleshooting. DIAG SERVO 12(13) VALVES  OUTPUT/INPUT ATTACH.  0.00V    0mA PUMP OFF 0.00V    0mA