FLANGE 1799763 - Caterpillar

The blade constant down force enable switch is used to signal to the Implement ECM that the operator has requested that the blade down force system to be activated.The switch provides a switch-to-ground type of input to the ECM. One pole of the switch is used to provide the two inputs to the ECM. The other pole of the switch is not used. During normal operation, one of the switch inputs is open to ground. The other input is closed to the return circuit of the ECM (ECM ground).The Implement ECM expects one of the circuits of the switch input to be grounded always. If both of the switch circuits are grounded at same time or if both of the switch circuits are open at the same time, the ECM will activate a diagnostic code for the switch circuits.When the Implement ECM detects that the ON input circuit is grounded, the ECM will enable the blade down force system if certain machine conditions are correct.For more information on the operation of the blade down force system, refer to the Systems Operation, "Features" section of this manual."Pilot Oil Supply Filter Bypass" Switch
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The "Pilot Oil Supply Filter Bypass" Switch is on the left side of the machine behind the transmission.
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"Pilot Oil Supply Filter Bypass" switch connections
The "pilot oil supply filter bypass" switch is used to indicate to the Implement ECM that the filter is plugged.The switch input circuit is connected to a switch-to-ground input contact at the Implement ECM. The ECM pull-up voltage holds the circuit high. When the oil pressure increases due to a plugged filter, the switch is actuated. When activated, the circuit is grounded through the switch. When the Implement ECM detects the grounded circuit, the ECM will activate an event code message for a plugged filter.The "pilot oil supply filter bypass" switch circuit is not monitored for diagnostics by the Implement ECM.Stable Blade Inertial Measurement Unit Sensor (If Equipped)
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Stable Blade Inertial Measurement Unit Sensor connections
Illustration 31 g03884899The Inertial Measurement Unit (IMU) Sensor is used with the Stable Blade feature. The sensor will send signals that indicate machine movement on the X, Y, and Z axis. These movements correspond to the machine rocking side to side, up and down and acceleration. Stable Blade will only use the up and down movement from the IMU sensor. The signals are sent on the J1939 CAN Data Link to the Transmission/Chassis ECM. The ECM will command the Engine ECM to reduce the engine speed based on the amount of machine movement. The decreased engine speed will reduce machine bounce and provide improved grading performance. The Stable Blade feature will only be active when enabled and the throttle lock is in the AUTO position. Stable Blade is only active in first gear forward through fifth gear forward. The feature provides the most benefit in higher working gears when the higher machine speed results in increased machine bounce.
The Stable Blade feature will be active when the feature is Enabled and