CAT ET 2024A Fuel Rail Pressure Test function checks for leaks on all hydraulic components. This test allows the user to change the desired pressure and then view the actual pressure results.
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Accessing
To run the Fuel Rail Pressure Test, select “Diagnostic Tests” from the Diagnostics menu, and then select “Fuel Rail Pressure Test” from the submenu. The Fuel Rail Pressure Test screen is displayed.
Screen Layout
The Fuel Rail Pressure Test screen has the following areas:
Display Area
The Fuel Rail Pressure 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 parameter listed in the Required Condition column.
Status Parameter Area
The Fuel Rail Pressure Test status parameter area lists parameters and their current values and units of measure. The parameters listed in this area are dependent upon the product being tested.
Status Line
Test status line indicates whether the test is “On” or “Off.”
Buttons
The buttons available on the Fuel Rail Pressure Test screen are:
Start – Click this button to begin the Injection Actuation Pressure test
Stop – Click this button to stop testing
Step Up – Click this button to increase the desired pressure of the system. Note: This button is disabled once the pressure value is at its maximum. It may or may not be available based on the current ECM.
Step Down – Click this button to decrease the desired pressure of the system. Note: This button is disabled once the pressure value is at its minimum. It may or may not be available based on the current ECM.
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