Detroit GHG17 Heavy Duty Engine Output Component Test Guide

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Here is the guide to show you how to perform output component test for Detroit GHG17 heavy duty engine.

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Note : This test can only run once per ignition cycle – If you need to run the test more than once, the ignition must be cycled between tests.

The Perform Output Component Test can be used as a sanity check for components related to the Aftertreatment System (ATS).

The Selective Catalyst Reduction (SCR) heaters, Pressure Limiting Unit (PLU), Coolant Valve, Intake Throttle Valve (ITV), Fuel Cutoff Valve, and HC Doser are commanded ON for a brief period and individual fault codes will be set during the test if a component fails.

To run this test:

1 Turn the ignition ON (key ON, engine OFF).

2 Connect to DiagnosticLink®.

3 Go to the “Service Routines” work window and select the “SCR System” tab. Select the “Perform Output Component Test” from the drop-down list.

4 Press the “Start” button.

Note : You can view the instruments in the Chart tab in the “Instrumentation” work window to ensure the instruments are turning ON as commanded.

5 The following examples illustrates successful completion of the routine.

5a All relative instruments were commanded ON, no faults were set.

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5b The progress box in the SCR System panel shows complete.

Note : You can view the instruments in the Chart tab in the “Instrumentation” work window to ensure the instruments are turning ON as commanded.

6 The following example illustrates unsuccessful completion of the routine.

6a All relative instruments were commanded ON, but Line Heater 3 failed and the fault code was set.

6b The progress box in the SCR tab shows that the test failed

More repair cases for Detroit Diesel engines,please refer to:Detroit Diesel Engine Repair

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