Alert Indicator - An alert indicator is a red indicator lamp that is located on the top portion of the main display module. The alert indicator notifies the operator of an abnormal condition.
+Battery - This pertains to any of the harness wiring which is part of the circuit that connects to the positive battery post. +Battery voltage is also referred to as system voltage.
Component Identifier (CID) - The CID is a diagnostic code that tells which component or system is faulty. The CID is a four-digit code, that is located in the digital display area when the main display module is in service mode.
Clear - This pertains to removing diagnostic information from the memory of the main display module. Before clearing a fault, a fault must be on hold and a fault must not be present.
Connector Contact - A connector contact is the component of a harness connector that actually makes the electrical connection. Connector contacts are either pins or sockets.
Detected Fault - A detected fault is a fault that has been found by the main display module. A service code that has been recorded for the fault and diagnostic information is available when the main display module is in service mode.
Diagnostic - Diagnostic refers to the showing, monitoring and/or recording of information that is abnormal. Diagnostic information is available from service, status, tattletale or numeric readout mode.
Display - Display refers to the gauges, indicators or readouts within the Caterpillar Monitoring System display area.
Failure Mode Identifier (FMI) - An FMI is a diagnostic code that identifies the type of failure that has occurred. The FMI consists of two digit code which is preceded by a decimal point ".". This code is shown on the display area when the main display module is in service mode.
Fault - A fault is a failure of a component in an electronic system. An FMI and a CID identify the type of fault.
Floating - The status or state of a control input that is not connected to a positive source or ground.
Hard Wired - Hard wired refers to electrical connections made within the harness that are permanent. These soldered connections or crimped connections are not meant to be altered.
Harness Code - Harness code refers to the grounded condition or open condition of the five harness code inputs (connector contacts 3, 6, 12, 16, 22 and 31). The harness code provides the characteristics of the machine such as the size of the engine, idle speed, tire size and attachments. The Caterpillar Monitoring System operates on different machines but the system must know the machine, that the system is installed on.
Hold or On Hold - This pertains to the holding of diagnostic information that is shown in the display area when in the service mode. It is necessary to hold the set of diagnostic information before troubleshooting or clearing.
Indicator - An indicator is any of the items within the Caterpillar Monitoring System display area which operate in an ON, FLASHING or OFF manner in order to bring attention to a machine condition.
Indicator Fault - An indicator fault is when the operation of an indicator does not correspond to a known machine condition.
Jumper - A jumper is a piece of wire that is used to make an electrical connection during troubleshooting.
Lamp - Lamp refers to a component of the machine lighting system.
Machine Code - The machine code is a two-digit number that the main module has assigned to a particular attachment code for a particular machine. Each sales model has a specific harness code.
Module Identifier (MID) - An MID is a diagnostic code that identifies the electronic control module which diagnosed the fault. The two-digit code is displayed in the display area when the machine is in the service mode.
Problem - Problem refers to the presence of an abnormal machine condition. When a problem exists, warning operation is activated and the main display module notifies the operator.
Pulse Width Modulation (PWM) - The PWM is a signal that consists of variable pulse widths at fixed intervals. The duty cycle can be varied. The frequency of a PWM signal is constant. The Caterpillar Monitoring System has sensors which provide a PWM signal to the main display module.
Scroll - When you scroll through information in the display area, all available sets of diagnostic information are shown by one set at a time. A set of diagnostic information is shown briefly. Then, the display automatically advances to the next set. After all sets have been shown, the sets are repeated.
Service Code - A service code describes a condition in an electrical control system. This code is stored in the control for the service technician.
Show - This pertains to information that is within the Caterpillar Monitoring System display area that is viewed by the operator or a service person.
Signal Wire - The signal wire is the harness wire that connects the sensor or the switch to the main display module.
Switch Input - A switch input is any input of the main display module which is expecting only an open (floating) signal or grounded 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.
Uncommitted Switch Input - Uncommitted switch inputs are switch inputs that function according to the application. Information from the uncommitted switch inputs is typically used to operate the alert indicators.
Undetected Fault - This is a fault that is not detected by the main display module, but the fault is found by the operator or by a service technician. The many diagnostic functions of the main display module assist with the troubleshooting of undetected faults.
+V - This pertains to a constant voltage that is supplied to a component. +V is provided by an electronic control module or the battery.