SUPPORT 2617552 - Caterpillar

Description
When power is applied to the electronic gauge modules (engine control switch turned from OFF/RESET position to STOP position), the gauge modules will perform a self-test. All segments of the display will come on and then the gauge module will enter the normal display mode.
Self-Test
If the module performs the self-test and then goes blank, the module may be in the slave mode. To return a module to the master mode from the slave mode:1. Remove power from the module (turn the engine control switch to the OFF/RESET position).2. Hold all three buttons on the module continuously while power is applied (turn the engine control switch to the STOP position).3. Continue to hold the buttons during the self-test. Three seconds after power is applied the display will change from all segments on to "prog". Release the buttons when the display shows "prog" and the module will have returned to the master mode.Modules
Each module provides two ten-segment bar graphs and one four-digit digital display.The digital display is shared by up to seven different engine functions which are depicted by International Symbols (ISO) shown on the three touch buttons.
Sensors or transducers used in conjunction with the electronic gauge modules must be obtained through your Caterpillar dealer. The modules will only function with specified Caterpillar sensors. No other sensors will function and may adversely affect the operation of this system. Sensors will be damaged if wired incorrectly. Check wiring diagrams carefully before connecting.
* Bar Graphs- Each gauge module is designed with two 10-segment bar graphs; each bar represents 10% of the range printed on the decal. Each bar graph corresponds to the outer function shown next to it. An exact reading may be obtained by pushing the touch button with the same ISO symbol as the bar graph.A bar is illuminated when the value of the scalar mark separating it from the next higher bar (to the right) is equaled or exceeded. However, the value must drop about 2.5% between 2 bars before the higher bar goes off. (See Chart 7 for specific information). Example:For pressure rising at 77.5 psi, 7 bars are ON. At 80 psi, 8 bars are ON.For pressure falling from greater than 80 psi, 8 bars remain ON until a value of 77.5 psi is reached.* Touch Buttons and "Carrots"- The lower portion of each module contains three touch buttons. The engine or auxiliary equipment function being displayed is identified by the solid "carrot" (black triangular pointer) directly above the ISO symbol of that function being displayed. To view a different function, press the center of the button with the ISO symbol you want to view. If more than one symbol is on a button, press the same button a second or third time until the "carrot" points to the desired symbol on the button.* Units Displayed- English units are displayed except when specified in advance. Metric display is possible by changing the appropriate constant stored in memory. Refer to the section on Programming the Electronic Gauge Modules