Est Tool — Injector Test
Figure 1. Diagnostic Form
The Engine Running Test must be performed first to access the INJECTOR TEST. For a reproduction of the applicable portion of the diagnostic form, see Figure
The Engine Running Test will verify that all power cylinders are contributing equally.
After the Engine Running Test has been completed, press the ↓ key from the ENGINE RUNNING TESTS screen to access the INJECTOR TEST. Then press enter. See Figure
Figure 2. Diagnostic Form
Note: The engine will run rough during the test.
The EST will signal the ECM to actuate each injector in a programmed sequence and then measure the power cylinder performance.
At the completion of the test, the EST screen will display 00 FAULTS”, if no injector faults occurred. If the EST indicates faults have been detected, press enter to display the fault codes. Record the fault codes and refer to the Electronic Diagnostic Form; refer to “10.1 Introduction”
, for fault codes that were detected.
Possible causes for this condition follow:
- Broken compression rings, leaking or bent valves, bent pushrods or connecting rods
- Open or shorted engine wiring harness to injectors
- Defective injectors or solenoids
Pro-Link 9000, J 38500–100
For further diagnostics, refer to “34 Injection Pressure Regulation System”
|Series 40E Troubleshooting Manual – 6SE241|
|Generated on 10-13-2008|