September 2016Part No. 227123 GRCSection 5 Rev DiagnosticsIntroduction .................................................................................................. 5 - 1A GCON I/O Map ............................................................................................ 5 - 3A Operational Indicator Codes ........................................................................ 5 - 4A Diagnostic Indicator Codes .......................................................................... 5 - 4A Troubleshooting "HXX" and "PXXX" Faults ................................................. 5 - 5A Fault Inspection Procedure .......................................................................... 5 - 6A Type "HXXX" Faults .................................................................................... 5 - 8A Type "PXXX" Faults ..................................................................................... 5 - 9A Type "UXXX" Faults .................................................................................. 5 - 10A Type "FXXX" Faults ................................................................................... 5 - 11A Type "CXXX" Faults .................................................................................. 5 - 12Section 6 Rev SchematicsIntroduction .................................................................................................. 6 - 1B Electrical Component and Wire Color Legends ........................................... 6 - 2B Wiring Diagram - Ground and Platform Controls .......................................... 6 - 3B Electrical Symbols Legend ............................................................................ 6 -4B Electrical Schematic (from serial number GRC11-1000 to GRC11-1078) .... 6 - 6B Electrical Schematic (from serial number GRC11-1079) ............................ 6 - 10A Hydraulic Component Reference and Symbols Legend ............................. 6 - 13B Hydraulic Schematic .................................................................................. 6 - 14xi