Valve Relay Operation

The valve relay is included in the sensor block assembly and, when engaged, provides power to the hydraulic wheel circuit valves and the replenishing valve. When the valve relay is engaged, battery power is also provided to the valve relay feedback line at the EBCM. The pressure monitoring module, which is also a part of the sensor block assembly, controls current flow through the valve relay coil based on commands from the EBCM and accumulator pressure inputs.