Caterpillar ET Service Tool diagnostic software Auto Retarder Test function allows the operation of the Auto Retarder Control (ARC) system to be verified while the machine is stationary. The ARC outputs are activated and monitored for correct operation.
To run the Auto Retarder Test function, select “Diagnostic Tests” from the Diagnostics menu, and then select “Auto Retarder Test” from the submenu. The Auto Retarder Test will be displayed.
The Auto Retarder Test screen has the following areas:
The Auto Retarder Test display area has three columns:
Description – Provides the name of the parameter set to run the test
Required Condition – Displays the value that the parameter must meet in order to run the test.
Actual Value – Displays the actual value of the required condition parameters.
Status Parameter Area
The Auto Retarder Test status parameter area lists parameters and their current values. The ARC Control Solenoid displays the position in percentage of the ARC Control Solenoid. The ARC Pressure Switch Status displays if the status is “High” or “Low.”
The Auto Retarder Test status line displays if the test is “On” or “Off.”
The buttons available in the Auto Retarder screen are:
Start – Click to start the test. When clicked, “On” will be displayed in the status line, and the button will be disabled until the test is stopped.
Stop – Click to stop the test. When clicked, “Off” will be displayed in the status line, and the button will be disabled until Start is clicked again.