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Override Parameters Listed in the Engine ECM Menu
Engine Fan Bypass
This override is used to turn ON the engine fan, if equipped. The override can be used to test the engine fan operation. The engine fan speed is entered as a percent of full speed, allowing the user to operate the fan at different speeds.Engine Fuel Supply Lift Pump Relay Override
This override is used to energize the Electric Fuel Lift Pump (EFLP) relay. The override can be used to test the EFLP relay only when engine speed is zero. The EFLP relay is switched to either ON or OFF.Engine Shutdown Lamp
This override provides the facility to test the electrical circuit for the Engine Shutdown Lamp. The override commands the Engine Shutdown Lamp on.Ether Starting Aid Override
This override is used to confirm the correct operation of the ether system. Remove the ether canister from the system before testing the ether injection system. Refer to Troubleshooting, "Ether Starting Aid - Test". The override requires that engine speed must be zero. The override will be unavailable for a short duration if glow plugs are active.Glow Plug Starting Aid 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.System Troubleshooting Settings
The "System Troubleshooting Settings" screen will allow overrides to be enabled.System Troubleshooting Settings Listed in the Engine ECM Menu
Injector Disable Override
This override will allow the user to disable the injectors from activating when performing certain troubleshooting procedures.Active Diagnostic Codes
The purpose of this screen is to show all of the active diagnostic codes.Select the "Diagnostics" tab.Select the "Active Diagnostic Codes" tab.Tab Functions At Bottom of Screen
Reset All
This tab will reset all of the active codes.Troubleshoot Code
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Troubleshoot Symptom
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Logged Diagnostic Codes
The purpose of this screen is to show all of the logged diagnostic codes. 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.Troubleshoot Code
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Troubleshoot Symptom
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Active Event Codes
The purpose of this screen is to show all of the active event codes. Select the "Diagnostics" tab.Select the "Events" tab.Tab Function At Bottom of Screen
Reset All
This tab will reset all of the active codes. Some of the event codes will "latch" to active status. Repairing the system will not "unlatch" the event codes and the event codes must be reset with the electronic service tool.Logged Event Codes
The purpose of this screen is to show all of the logged event codes. 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.Troubleshoot Code
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Troubleshoot Symptom
This tab is currently not available. Refer to Troubleshooting, "Diagnostic Trouble Codes" for further information.Diagnostic Tests
Electronic service tool diagnostic tests are listed below.Select the "Diagnostics" tab.Select the "Diagnostic Tests" tab.Diagnostic Tests Listed in the Engine ECM Menu
Injector Solenoid Test
The purpose of the injector solenoid test is to diagnose injector wiring and injector solenoid functionality. This test identifies an open circuit or a short circuit in the circuit for the injector solenoids. The test activates the injector solenoids one at a time while the engine is not running. A good solenoid will create an audible click when the solenoid is activated. The electronic service tool indicates the status of the solenoid as "OK", "Open", or "Short".The injectors must be powered to enable the automatic test to be run. In order to start the test, select the "Start" button. The automatic test will continually cycle through the injectors until the "Stop" button is selected.There is no test results if the "Change" button is selected to power or cutout an individual injector. When selected, the "Power All" and "Cutout All" buttons do not give test results.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 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 injector, valves, and piston.The cylinder cutout test can be performed on one injector or multiple injectors at once. Th