IK1201387 ­ CPA Snapshot Viewer: Air Management Test (AMT)

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CANADA, UNITED STATES Document ID: IK1201387

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ISIS, NotSIR

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Major System:

ENGINES

Created:

8/11/2017

Current Language: English

Last Modified: 12/14/2017

Other Languages: NONE

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Title : CPA Snapshot Viewer: Air Management Test (AMT)
Applies To : EPA 2010­2013 MF DT/9/10 EPA 2014­2017 N9/N10

CHANGE LOG
12/14/2017- Initial Article Release
11/6/2017-updated applies to and symptom/fault codes
08/11/2017­ Draft started




DESCRIPTION:
This document describes the process for utilizing the CPA Snapshot Viewer Air (SSV) Management Test (AMT)
Note: SSV- AMT does not issue a Warranty Authorization Code (WAC)

CPA Snapshot Viewer AMT Applies To:
Engine Platform

Emission Year

Emission Model

MED

2010-2013

MaxxForce DT/9/10

MED

2014-2017

N9/ N10

Software Release:

Version Change Description

Release Date

9.0.1.0

12/15/2017

Snapshot Viewer: MED Air Management Test (AMT) Release

Software must always be current. Refer to the CPA Resource Article

SYMPTOM(s)/ FAULT CODE(s):
Symptom
Engine Unable To Reach Rated Speed (No Load)
Low Power
Frequent Regens
Fault Code Description
2659-10

EGR Slow Response

2659-14

EGR System flow rate error during Air Management Test

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IK1201387 ­ CPA Snapshot Viewer: Air Management Test (AMT)

2659-20

EGR High Flow Rate Detected

2659-21

EGR Low Flow Rate Detected

3719

DPF Related Faults

3939

Aftertreatment Related Faults

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TEST DESCRIPTION:
Engine Platform Application

Test

DT466

AMT

DT570

AMT

Notes

The CPA SSV module performs a data analysis of a Navistar Engine Diagnostics (NEDs) snapshot recording. The SSV-AMT is a sub-module that
performs a data analysis of an Air Management Test (AMT) snapshot recorded with NEDs. SSV-AMT is to provide diagnostic guidance based on the
data recorded.

INSTRUCTION:

Press folder icon:

Select desired snapshot:

Note: Ensure the file selected is a SLK file and an Air Management Test

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IK1201387 ­ CPA Snapshot Viewer: Air Management Test (AMT)

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Test Type List> Select Medium Duty> I6 AMS Test

Press Analyze Snapshot

1- Yellow Vertical Cursor can be moved left and right
2- As Yellow Vertical Cursor moves> The data is populated in number value
3­ Error Name> Click on Fault
4- Error Description> Populates detailed information on the fault (See Examples of SSV-AMT Messages Below)

Examples of SSV-AMT Error Descriptions:
Error Name

Error Description

Incorrect engine
speed profile

Review engine speed value, make sure the correct snapshot has been selected.

Incorrect EGR CTRL

Check for Aftertreatment related DTC to be active during the test. An active AFT related DTC will cause the ECM to cancel all
EGR valve operation even during a commanded test such as the AMS test or high output test

Incorrect EGRV
position

Inspect EGR valve position signal and address as required

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IK1201387 ­ CPA Snapshot Viewer: Air Management Test (AMT)

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MAF high point A
reading is too high

Incorrect engine, displacement, or torque designation was selected

MAF mean
difference is too
small

If the EGR valve did change from fully closed to fully open during the AMS test and the change in the MAF mean value was
not great enough the test will fail and set the 2659:14 DTC. This is the only DTC that the AMS test will set regardless of the
issue that caused the MAF mean value not to have a great enough change

MAF low point B
reading is too low

Incorrect engine, displacement, or torque designation was selected

MAF low point B
reading is slightly too Inspect for a restricted EGR air circuit (EGR valve, mixer housing, crossover pipe, and EGR cooler).
high
MAF low point B
reading is too high

Inspect for a restricted EGR air circuit (EGR valve, mixer housing, crossover pipe, and EGR cooler). If this is the same as the
MAF Mean value in the first half of the test check to see if the EGR valve is opening. Keep in mind that an active Aftertreament
related DTC will cause the EGR valve operation to be canceled, even during a commanded test.

MAF high point A
Inspect for an air inlet restriction. This can be anything from the air inlet on the hood to the intake manifold and can include a
reading is slightly too
stuck open or misadjusted wastegate for the HP turbo
low
MAF high point A
reading is too low

Inspect for an air inlet restriction. This can be anything from the air inlet on the hood to the intake manifold and can include a
stuck open or misadjusted wastegate for the HP turbo. This should also be accompanied by low boost during the first half of
the test

Boost Pressure is
too low

This should be accompanied by a low MAF mean value in the first half of the test and would suggest an air inlet restriction.
This can be anything from the air inlet on the hood to the intake manifold and can include a stuck open or misadjusted
wastegate for the HP

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