RT115 Tier 2 - CONTROLS 25 IMPORTANT: For more information about the diagnostic system and trouble codes see "Tier 2 System Overview" in SERVICE . Light flashes when a "warning" fault is present. Light is steady when "engine shutdown" fault is present. This indicator alerts operator to Tier 2 engine fault conditions. This indicator lights when hydraulic motor is in high speed. CONTROL CONSOLE DESCRIPTIONS Operator Alert Indicator High Speed Indicator p