881649A01 Mariner DECAL SET

Override Parameters
The override parameters screen has multiple overrides. The parameters control various functions on the engine and Clean Emissions Module (CEM). These functions and features allow the technician to troubleshoot different engine systems.Cat ET Location
Connect to Cat ET.
Select the appropriate ECM.
Select the "Diagnostics" tab.
Select the "Diagnostic Tests" tab.
Select the "Override Parameter" tab.Override Parameters Listed in the Engine ECM Menu
Engine Pre-Lube Override
This override turns on the Engine Pre-Lube relay to test the power supply circuit to the relay.Engine Overspeed Test
This test is used to test the engine overspeed shutdown protection system. When this test is activated, the ECM will temporarily lower the engine overspeed shutdown limit to 75% of the normal value. The usual method of engine speed control is then used to raise the engine speed above the temporary speed threshold. The ECM will then disable injection and shut the engine down. Once the test is complete, the ECM must be reset using a keyswitch cycle before the engine can be restarted.Starting System #1 Relay Override
This override turns on the starting system #1 relay to test the power supply circuit to the relay.Starting System #2 Relay Override
This override turns on the starting system #2 relay to test the power supply circuit to the relay.Override Parameters Listed in the Selective Catalyst Reduction Menu
Aftertreatment #1 DEF Return Valve Override
This override turns on the DEF Return Valve circuit to test the return valve and the circuit for proper operation.Aftertreatment #1 SCR Dosing Air Assist Valve Command Override
This override turns on the DEF Air Assist Valve circuit to test the air assist valve and the circuit for proper operation.Engine Exhaust NOx Level Sensor Power Supply Override
This override turns on the NOx sensor power supply to the engine out NOx sensor to test the power supply circuit and the NOx sensor.Aftertreatment #1 Outlet #1 NOx Level Sensor Power Supply Override
This override turns on the NOx sensor power supply to the engine out #1 NOx sensor to test the power supply circuit and the NOx sensor.Aftertreatment #1 DEF Manifold Heater Relay Override
This override turns on the DEF Manifold Heater to test the power supply circuit to the DEF Manifold heater.Aftertreatment #1 DEF Tank Refill Solenoid Override
This override turns on the DEF tank refill valve circuit to test the refill valve and the circuit for proper operation.Aftertreatment #1 DEF Pump Heater Command Percentage Override
This override is used to turn the DEF pump heater ON or OFF. The value can be 0 percent or 100 percent only.Aftertreatment #1 DEF Pump Drive Command
This override is used to turn the DEF pump ON or OFF. The value can be 0 percent or 100 percent only.Aftertreatment #1 DEF Line Heater Relay #1 Override
This override turns on the Aftertreatment #1 line heater relay #1 to test the power supply circuit to the relay.Aftertreatment #1 DEF Line Heater Relay #2 Override
This override turns on the Aftertreatment #1 line heater relay #2 to test the power supply circuit to the relay.Aftertreatment #1 DEF Line Heater #3 State
This override turns on the Aftertreatment #1 DEF line heater relay #3 to test the power supply circuit to the relay.Aftertreatment #1 EF Line Heater #4 State
This override turns on the Aftertreatment #1 DEF line heater relay #4 to test the power supply circuit to the relay.Aftertreatment #1 DEF Quick Thaw Tank Heater Command Override
This override turns on the Aftertreatment #1 DEF Quick Thaw Heater relay to test the power supply circuit to the relay.Aftertreatment #1 DEF Pump Relay Status
This override turns on the DEF pump relay to test the power supply circuit to the relay.Active Diagnostic Codes
The purpose of this screen is to show all the active diagnostic codes.Cat ET Location
Connect to Cat ET.
Select the appropriate 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 active codes.Troubleshoot Code
This tab is currently not available for Tier 4 engines. Refer to the Troubleshooting guide.Troubleshoot Symptom
This tab is currently not available for Tier 4 engines. Refer to the Troubleshooting guide.Logged Diagnostic Codes
The purpose of this screen is to show all the logged diagnostic codes.Cat ET Location
Connect to Cat ET.
Select the appropriate 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.Troubleshoot Code
This tab is currently not available for Tier 4 engines. Refer to the Troubleshooting guide.Troubleshoot Symptom
This tab is currently not available for Tier 4 engines. Refer to the Troubleshooting guide.