BUCKET & ADJUSTER GP 3460952 - Caterpillar

Secondary Steer Test Switch
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Secondary Steering Test Switch
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Secondary Steer Test Switch connections
The secondary steering test switch enables the operator to manually test the operation of the secondary steering system. The switch is a two-pole, double-throw rocker switch. One pole of the switch is used for the circuit of the secondary steering test signal. The other pole is not used.The input circuit of the switch is connected to a switch-to-ground input contact at the Implement ECM. The ECM pull-up voltage holds the circuit high. When the switch is actuated, the circuit is grounded through the switch. When the Implement ECM detects the grounded circuit, the ECM will send a secondary steering test request to the Transmission/Chassis ECM. If the secondary steering system does not respond as requested, an event code will be activated.The test switch of the secondary steering circuit is not monitored for diagnostics by the Implement ECM.Blade Constant Down Force Enable Switch
Note: The blade down force system is not available on the 14M Motor Grader.
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Blade Constant Down force enable switch
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Blade Constant Down force enable switch input connections
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 at all times. 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 located 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