CYLINDER GP-STEER 3G3501 - Caterpillar

Active Diagnostic CodeDescribes a condition that is currently present. Alerts the operator or service technician that an abnormal parameter for engine operation currently exists. After Market DeviceA device or accessory installed by the customer or OEM after the engine is delivered by Caterpillar. Air-To-Air Aftercooler (ATAAC)A method of using ambient air for cooling the inlet air after the turbocharger. The inlet air is passed through a heat exchanger that is mounted in front of the radiator before flowing to the inlet manifold. This heat exchanger is called the aftercooler. Alternating Current (AC)The current flow changes regularly and constantly in the form of a sinusoidal wave. The pattern of the wave alternates about a central exist. American Wire Gauge (AWG)A measure of the diameter of electrical wire. The smaller the AWG number, the larger the diameter of the wire. When the size of the wire increases, the capacity of the wire for carrying electrical current increases. Atmospheric Pressure SensorAn analog sensor that generates a signal that is proportional to the atmospheric air pressure in the crankcase. The sensor sends a signal to the ECM. Boost Pressure SensorRefer to Turbocharger Compressor Outlet Pressure Sensor. Breakout T HarnessA test harness that is designed to connect to an engine harness. The test harness allows normal operation of circuits while providing a breakout to the engine harness to measure signals. Bypass CircuitA circuit that is temporary to substitute for an existing circuit. The bypass circuit is used for test purposes. CalibrationAn electronic adjustment of a sensor signal. CAT Data LinkA two-wire electrical connection for communication with other microprocessor based devices such as Caterpillar electronic monitoring displays. The data link is also the serial communication medium used for programming and troubleshooting with Caterpillar Electronic Service Tools. Caterpillar Electronic Technician (CAT ET)Cat ET is a software program that functions on a service tool such as a personal computer (PC). Caterpillar Engine MonitoringThe part of the Caterpillar Electronic Engine Control that monitors coolant Temperature, Oil Pressure, Inlet Manifold Air Temperature and Coolant Level to alert the operator that problems are detected. The Coolant Temperature, Inlet Manifold Air Temperature, and Oil Pressure Sensors are supplied by Caterpillar. These sensors are monitored by the ECM. The Coolant Level Sensors is installed by the OEM. This sensor is monitored by the ECM. After market engine monitoring systems do not interface with the Caterpillar Electronic Engine Control. CodeRefer to Diagnostic Code. Cold ModeWhen the engine is cold, the timing is retarded and the low idle may be raised for engine protection, reduced smoke emissions and faster warm up time. Component Identifier (CID)A two or three digit code which is assigned to each component to identify data that is sent through the data link to the ECM. Coolant Level SensorThis sensor detects the absence or presence of coolant at the probe. The sensor sends a signal to the ECM. The sensor is installed by the OEM. Coolant Temperature SensorThis sensor detects the engine coolant temperature for Cold Mode operation and