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Override Parameters
The override parameters screen has multiple overrides. The parameters control various functions on the engine. These functions and features allow the technician to troubleshoot different engine systems.In the electronic service tool, select the engine ECM for the required override.Override Parameters Listed in the Engine ECM Menu
Start Aid Relay Override
This override is used to check that the glow plugs are functioning correctly. The override requires that engine speed must be zero. The override will be unavailable for a short duration if ether injection is active.EGR Valve Control Override
This override is used to check that the NRS valve is functioning correctly. The override requires that engine speed must be zero.Intake Throttle Valve Override
This override is used to check that the intake throttle valve is functioning correctly. The override requires that engine speed must be zero.Active Diagnostic Codes
The purpose of this screen is to show the active diagnostic codes. Only six active codes can be displayed. The displayed codes must be cleared before further active codes can appear on the display.In the electronic service tool, select the engine ECM.Select the "Diagnostics" tab.Select the "Active Diagnostic Codes" tab.Tab Functions At Bottom of Screen
Reset All
This tab will reset all the logged codes.Logged Diagnostic Codes
The purpose of this screen is to show all the logged diagnostic codes.In the electronic service tool, select the engine ECM.Select the "Diagnostics" tab.Select the "Logged Diagnostic Codes" tab.Tab Functions At Bottom of Screen
Clear
This tab will clear specific codes when highlighted.Clear All
This tab will clear all logged diagnostic codes.Active Event Codes
The purpose of this screen is to show all the active event codes.In the electronic service tool, select the engine ECM.Select the "Diagnostics" tab.Select the "Events" tab.Logged Event Codes
The purpose of this screen is to show all the logged event codes.In the electronic service tool, select the engine ECM.Select the "Diagnostics" tab.Select the "Events" tab.Select the "Logged Events" tab.Tab Functions At Bottom of Screen
Clear
This tab will clear specific codes when highlighted.Clear All
This tab will clear all logged diagnostic codes.Diagnostic Tests
Electronic service tool diagnostic tests are listed below.In the electronic service tool, select the engine ECM.Select the "Diagnostics" tab.Select the "Diagnostic Tests" tab.Diagnostic Tests Listed in the Engine ECM Menu
Cylinder Cutout Test
The cylinder cutout test allows one cylinder or multiple cylinders to be cut out. The cylinder cutout test is useful when troubleshooting poor engine performance or a suspected electronic unit injector failureThe process involves cutting out power and restoring power to a selected cylinder. The remaining powered cylinders are then monitored for expected increases in delivered fuel volume. If the fuel volume does not increase, the cylinder that was not powered was not working prior to being cut out for the test.A cylinder that is not working means that the power produced by that cylinder is comparatively less than the other cylinders. This fault can have numerous root causes relating to the cylinder including the electronic unit injector, valves, and piston.The cylinder cutout test can be performed on one electronic unit injector or multiple injectors at once. This function provides a way to identify misfiring cylinders when the engine is running.Wiggle Test
The purpose of the Wiggle Test is to detect intermittent electrical faults in electronic control systems. The Wiggle Test function allows the user to determine if there is an intermittent wiring fault. The test will indicate (by changing the value reading) which parameter moved beyond a predetermined range when wiggling the wiring harness, sensor, or connector.This test requires that the engine is OFF and the key switch is in the ON position (or ECM energized and 0 engine speed). If the engine is started with the wiggle test active, the wiggle test will abort.The Wiggle Test will reduce all ECM requirements to trip fault codes, making the diagnostics sensitive. Under normal operation some fault codes need multiple occurrences before the code will log. But during this test the fault codes will trip the first time.The technician must wiggle and shake the wiring to check if codes go active. If any parameter changes state electrically, an audible alarm is also activated. Once the test has ended, the ECM returns to normal diagnostic trip requirements.Fuel Rail Pressure Test
The purpose of this test is check the integrity of the high-pressure fuel system after work has been completed. The test can also help with troubleshooting general fuel system-related issues.The engine speed is automatically increased above a minimum threshold when this test is run. The rail pressure is increased to 160 MPa (23206 psi) and held at this pressure for a time. The rail pressure is then reduced to normal. If the check is for system integrity after work, the engine must be stopped before inspecting the high-pressure fuel system for fuel leaks. If the reason for the test is troubleshooting general fuel system-related issues, check for error codes. Any error codes that occur during the test should be used to provide guidance for troubleshooting.Calibrations
Electronic service tool calibration procedures are listed below.In the electronic service tool, select the engine ECM.Select the "Service" tab.Select the "Calibrations" tab.Calibrations Listed in the Engine ECM Menu
Injector Codes Calibration
Whenever an electronic unit injector is replaced, the injector fuel delivery must be trimmed. Trimming the electronic unit injector calibrates all the injectors to deliver the same amount of fuel. The Injector Codes Calibration allows the injector trim code information to be programmed into the ECM. After the electronic unit injector is calibrated, the calibration data is checked for validity.When new electronic unit injectors are installed, record the serial numbers of each injector and search for the injectors in SIS Web. The trim files must be downloaded and stored. Load the trim file for each electronic unit injector into the ECM.Fuel Pump Learn
Fuel pump learn is used to perform a pump calibration manually. Use the electronic service tool to perform a fuel pump learn whenever the fuel pump or the engine ECM is replaced. Failure to perform the fuel pump learn can damage the fuel system.In other circumstances, the fuel pump learn must only be performed as instructed during troubleshooting