PUMP GP-FUEL INJECTION 2663715 - Caterpillar

Illustration 1 g00299479
Display Area
Table 1
Numeric Readout Mode    
Mode     621G     623G     627G     631G     637G    
5     X     X         X        
6             X         X    Numeric readout mode is an operator mode. Numeric readout mode assists service personnel with troubleshooting of sensor inputs. The inputs supply information for the gauges in the quad gauge modules. Numeric readout mode more accurately shows the same information that is shown on the gauges in normal mode. The system identifier and the numeric value for the system scrolls on the six digit display area. The system identifier identifies the system that is currently shown on the six digit display area. See table 2 for "System Identification" and illustration 2 in order to match the system identifier to the appropriate gauge.
Illustration 2 g00537627
Quad gauge modules
Illustration 3 g00299481
This is an illustration of the display area on the Main Display Module that is showing an example of a system identifier.
Table 2
System Identification    
System Identifier    Gauge (System)    
GA-1     Coolant Temperature    
GA-2     Torque Converter Temperature    
GA-3     Air Pressure    
GA-4     Fuel    
Table 3
Units    
Condition    Units of Measurement    
Temperature     °C    
Pressure     kPa    
Voltage     0.1 volts    
Level     % full    For machines with two Caterpillar Monitoring Systems, the gauge and display will show information for the monitoring system that is currently selected. The selections will be made with the tractor mode switch or the scraper mode switch.In addition to the table and the illustration, only the gauge for the system that is shown on the six digit display area is operational. All other gauges in the quad gauge modules are shut off. The gauge needles will move to the far left position. When you enter the numeric readout mode, the six digit display area is showing information for system GA-1. The display momentarily shows the system identifier. The display then shows the value for the corresponding system on the six digit display area. Scroll through the gauges by momentarily pressing the operator mode switch. Toggle the operator mode switch quickly. When the service input is grounded, all of the systems will scroll on the display. This will show the system identifiers. Removing ground from the service input stops the scrolling, when the desired system is shown. The six digit display area continues to show the system identifier momentarily. The six digit display area then shows the value of the system. The system is now shown on hold. While the system is on hold, the numeric value of the system is continuously updated.