BRAKE & PLANETARY GP 6Y3588 - Caterpillar

Monitoring System performs an automatic internal test when the machine is activated. Turning the engine start switch from the OFF position to the ON position will activate the test.The test verifies proper operation of the outputs (displays, indicator lamps, and audible alarms).The internal circuits are automatically checked.The operator must observe the outputs in order to determine whether the displays are operating properly. The length of time for the test is approximately 3 seconds.During this test, the alert indicators flash. Also, the display window shows the following information:
All units of measurement (degrees Celsius, kPa, miles, km, rpm, and liters)
"X10" indicator
Symbol for hour meter
"8.8.8.X.8.8." on the digital readoutThe tachometer and the gauge needles ramp straight up. Then, the gauge needles go to the right and to the left. The gauge needles then go to the final position.
The gear/direction readout shows an asterisk.
The digital speedometer shows "188" mph and km/h.
The indicator lamp is on continuously.
The audible alarm sounds once.The display then goes into the Normal Mode of operation or the display scrolls through the modes if the service input and the clear input are grounded or the operator switch input is grounded.