Active - This pertains to the status of a fault or to the status of a service code. When the fault is active, the fault is currently present.
Armed - This is a state of the security system when the machine is disabled.
+Battery - This pertains to any of the harness wiring which is part of the circuit that connects to the positive battery post.
Cat data link - The Cat data link is an electrical connection for communication with onboard devices that use the Data Link (ECM and service tools such as AVSpare Electronic Technician). The Cat data link is also the medium that is used for programming with AVSpare service tools and for troubleshooting with AVSpare service tools.
AVSpare Electronic Technician (ET) - This is a diagnostic service tool for a personal computer (PC).
Circuit - A circuit is a continuous path along a conductor for the flow of electrical current. A circuit goes from an electrical source, through various components, and back to the electrical source.
Clear - This pertains to removing diagnostic information from the memory of the ECM. Before clearing a fault, the fault must not be active.
Communication Adapter - The communication adapter provides a communication link between the ECM and the ET. The adapter converts Cat data link communication to RS-232 communication or to ATA data link communication and vice versa.
Component Identifier (CID) - A CID is a code that is used to identify a particular component. The CID is a four digit code.
Connector Contact - A connector contact is the component that actually makes the electrical connection between the harness connector and another connector plug. Connector contacts are either pins or sockets.
Detected Fault - This is a fault that has been found by the ECM. The fault is recorded and diagnostic information is available in the service mode.
Disarmed - This is a state of the security system when the machine is able to operate normally.
ECM - The ECM is the acronym for the electronic control module.
Electronic Control Module - The portion of the MSS that contains the microprocessor and memory
EID - Event Identifier
Event - The ECM recognizes the occurrence of an abnormal machine operation. When a combination of signals arrive at the ECM, the ECM decides when the machine is operating abnormally. Events are logged by the ECM and events are viewed by using a service tool.
Exciter Coil - The exciter coil is a small coil of fine wire. The wire is molded into the bezel of a keyswitch with harness wiring. The exciter coil provides a path of communication. The electronic key and the electronic control module communicate via radio frequency.
Fault - A fault is a failure of a component which is monitored by the ECM. The ECM detects a fault when a signal at the ECM connector is abnormal. An FMI and a CID identify the type of fault.
Floating - The input of the ECM is not connected to a source of positive voltage or ground.
Failure Mode Identifier (FMI) - An FMI is a diagnostic code that identifies the type of failure that has occurred.
Immobilizer - The Machine Security System Immobilizer is a feature within another ECM (engine and/or transmission) that restricts the operation of the machine until the Machine Security System disarms.
Jumper - A jumper is a piece of wire that is used to make an electrical connection during troubleshooting.
Machine Service Connector - This is a socket that is used to connect a service tool to the onboard electronic systems such as the implement ECM or the Machine ECM. The machine service connector is mounted on the machine and the Cat data link is used for the connection.
Master Access Level - Keys that are programmed for this level of access permit the operation of the machine and the key allows the user to add new keys. Also, keys that are already programmed can be modified.
Module Identifier (MID) - A MID is a diagnostic code that identifies the ECM which diagnosed the problem. The MID for the Machine ECM is 079.
MSS - Machine Security System
Open Circuit - If an electrical wire or a connection is broken, the flow of electrical current through the circuit is interrupted.
PID - A parameter identifier is used to identify specific parameters that are used by the MSS.
Plug (connector) - A plug is a fitting for making an electrical connection to a circuit. Insert the plug into a receptacle or into the body of electrical equipment.
Present - This pertains to the status of a fault or the status of a service code. The fault is currently active when the fault is present.
Problem - A problem refers to the presence of an abnormal machine condition. As an example, the engine oil pressure is low or the hydraulic oil temperature is high.
Product Identification Number (PIN) - The PIN consists of 17 characters. The last eight digits of the 17 character PIN is referred to as the Product Sequence Number.
Programming - Programming refers to the process of storing information in the memory of the control module.
Pulse Width Modulation (PWM) - A PWM signal is a signal that consists of variable pulse widths at fixed intervals. The frequency of a PWM signal is constant.
Receptacle (connector) - A receptacle is an electrical fitting that receives the plug assembly in an electrical circuit.
Sales Model Harness Code - The harness code tells the ECM the characteristics of a particular sales model. The ECM uses the data link to communicate the harness code information to the ET. This information is necessary because the ECM can operate on different sales models.
Scroll - This is the process of showing all of the available diagnostic information. The information is shown one set at a time. A set of diagnostic information is shown briefly. Then, the display automatically advances to the next set. After all of the sets have been shown, the sets are repeated.
Sensor - A sensor is a device that measures conditions such as pressure, temperature, or movement. This information is sent as an electrical signal that can be interpreted by the ECM.
Service Code - A service code describes a condition in an electrical system. This code is stored in the ECM for the service technician.
Short Circuit - If one part of a circuit contacts another part of the same circuit, the flow is diverted from the desired path.
Signal - The signal pertains to the condition of the ECM inputs. A ground signal has continuity with the frame ground. An open signal is floating. A +battery signal is at the same voltage as the battery (9.5 to 13 DCV).
Signal Wire - The signal wire is the harness wire that connects the sensor or the switch to the ECM.
Solenoid - A solenoid is a coil that is used to produce a magnetic field. The solenoid usually performs some type of mechanical work.
Standard Access Level - Keys that are programmed for this level of access permit the operation of the machine.
Supply Voltage - Supply voltage is a constant voltage that is supplied to a component in order to provide electrical power for the operation of the component. Supply voltage may be generated by the ECM. Also, supply voltage may be battery voltage that is supplied by machine wiring.
Switch Input - Switch input is any ECM input which is expecting a ground signal, an open signal or a +battery signal.
System Voltage - System voltage is the actual voltage that exists between the positive battery post and the frame ground. System voltage is also known as +battery voltage.
Tattletale - The tattletale is a counter in the ECM that is used as part of the calculation for the factory password. The tattletale is incremented after a factory password is used. The affected parameter will have an increase in the specific parameter of the tattletale and the total tattletale will reflect the increase as well. Once you use the factory password the factory password will no longer be valid. To make a change on the same ECM at a later date, another password will be required.
+V - +V is a constant voltage that is supplied to a component. This voltage provides electrical power for the component's operation. +V is provided by an electronic control module or the battery.
Wiring Harness - A wiring harness is the bundle of individual wires that form an electrical circuit.