HOSE AS 2699890 - Caterpillar

Illustration 1 g01858875
Reference Voltage - Reference voltage is a regulated voltage and a steady voltage that is supplied by the ECM to a sensor. The reference voltage is used by the sensor to generate a signal voltage.Relay - A relay is an electromechanical switch. A flow of electricity in one circuit is used to control the flow of electricity in another circuit. A small current or voltage is applied to a relay in order to switch a much larger current or voltage.Secondary Speed/Timing Sensor - This sensor determines the position of the camshaft during engine operation. If the primary speed/timing sensor fails during engine operation, the secondary speed/timing sensor is used to provide the signal.Sensor - A sensor is a device that is used to detect the current value of pressure or temperature, or mechanical movement. The information that is detected is converted into an electrical signal.Short Circuit - A short circuit is a condition that has an electrical circuit that is inadvertently connected to an undesirable point. An example of a short circuit is a wire which rubs against a vehicle frame and this rubbing eventually wears off the wire insulation. Electrical contact with the frame is made and creates a short circuit.Signal - The signal is a voltage or a waveform that is used in order to transmit information typically from a sensor to the ECM.Supply Voltage - The supply voltage is a continuous voltage that is supplied to a component in order to provide the electrical power that is required for the component to operate. The power may be generated by the ECM or the power may be battery voltage that is supplied by the engine wiring.Suspect Parameter Number (SPN) - The SPN is a J1939 number that identifies the specific component of the electronic control system that has experienced a diagnostic code.Top Center Position - The top center position refers to the crankshaft position when the engine piston position is at the highest point of travel. The engine must be turned in the normal direction of rotation in order to reach this point.Wait To Start Lamp - This lamp is included in the cold starting aid circuit in order to indicate when the "wait to start" period is active. The lamp will go off when the engine is ready to be started. The glow plugs may not have deactivated when the lamp goes off.Warning Lamp - The warning lamp is used to warn the operator of the presence of an active diagnostic code.Wastegate - The wastegate is a device in a turbocharged engine that controls the maximum boost pressure that is provided to the inlet manifold.Wastegate Regulator - The wastegate regulator controls the pressure in the intake manifold to a value that is determined by the ECM. The wastegate regulator provides the interface between the ECM and the mechanical system that regulates intake manifold pressure to the desired value that is determined by the software.