D250E Series II, D300E Series II, D350E Series II and D400E Series II Articulated Trucks Caterpillar Monitoring System Caterpillar

Illustration 1	g00297408
This is a typical example of the Display Area (Mode 2).

The Caterpillar Monitoring System has 11 different possible modes of operation. Four of the modes are operator modes and seven of the modes are service modes. Each mode provides important information regarding the condition of the machine. Each mode also provides information regarding the setup of the monitoring system. All modes are not available on all machines. The system that is installed on the machine determines the modes that are available. All 11 modes are given names and the modes are referenced in this manual. The mode is shown as a number on each display area on the main display module. This number is assigned by the software in the main display module.

The seven service modes can be changed by using the service switch and the clear switch on the main display. The four operator modes are accessible by using the selector switch for the operator mode that is located in the operator's compartment. The following table shows the available modes. See the Operation and Maintenance Manual of the machine that is being serviced for specific information on the operator mode.

When power is applied, the Caterpillar Monitoring System performs the self test. After the self test is complete the Caterpillar Monitoring System enters the Normal Mode. To enter the other modes, the service and clear inputs are grounded at the same time. This action causes the mode numbers to scroll sequentially on the six digit display area of the main display module. When ground is removed from the service and clear inputs, the monitoring system enters the mode which corresponds to the number that is presently shown. The following situation is an example. When you see the mode number "- 1-" on the readout remove the ground. This action causes the monitoring system to enter harness code mode.

Note: The following situation will occur when the key start switch is in the ON position and the service and clear inputs are grounded. The monitoring system performs the self test when the power is applied. The mode numbers immediately scroll after the self test.

The service and clear inputs are provided with access by the service connector or the service switch. The service connector or the service switches are located within the operator compartment. Information on the location of the service connector is in the Electrical System Schematic for the machine that is being serviced.

The mode of operation is variable at any time. Grounding the service and clear inputs at the same time initiates the scrolling of the mode numbers. Removing ground causes the monitoring system to enter the operating mode. The mode number that is shown will correspond to the operating mode. When you are scrolling through the modes, mode 0 (normal mode) is not shown on the display area as a number. When you reach mode 0, the display area begins showing the information for mode 0 (normal mode).