NHTSA ID Number: 11028367
Manufacturer Communication Number: IK2600300
TSB/Document Date: 2026-02-05
Summary
This article equips technicians with the knowledge and steps needed to efficiently replace and program N9/N10 and N13 modules, while addressing potential baud rate incompatibility issues between the replacement module and the vehicle.
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TSB/Document ID: IK2600300
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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PROGRAMMING SUPPORT
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Last
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1/6/2026
Matthew
Carrigan
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Title : N9/N10 & N13 Baud Rate Information Associated With Vehicle Programming
Applies To : N9/N10/N13 Engines and Body Control Modules
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
01/29/2026 - Initial Article Release
DESCRIPTION
This article equips technicians with the knowledge and steps needed to efficiently replace and program N9/N10 and N13
modules, while addressing potential baud rate incompatibility issues between the replacement module and the vehicle.
SERVICE INFORMATION
Table Of Contents
Introduction
The history of baud rate at International, and why it matters.
Identifying Vehicle Baud Rate
You MUST know the baud rate of the vehicle you are working on so you can
obtain the correct module.
Use Correct Module
Certain modules can have their baud rate switched; others cannot. Use this
information to obtain the correct module.
Determine Replacement
Module Baud Rate
The baud rate of the module MUST match the baud rate of the vehicle.
Switching Module Baud Rate
This covers the programming processes that are needed in order to switch
the baud rate of a module.
Introduction
It is possible to replace a module without encountering problems. However, you are likely here because you have
encountered issues programming a replacement module (or a test module) for an N9/N10 or N13 engine. Before
moving on to the programming processes that resolve these issues, it is important to understand what causes them baud rate.
The term "baud rate" refers to speed of communication on the data link. Higher baud rate numbers refer to faster
communication speeds. It is also important to understand that a 250k baud rate module will not work on a 500k vehicle and vice versa. We need to start with some facts.
1. N9/N10 engines were built from 2014-2017.
2. N13 engines were built from 2013-2017.
3. International built vehicles with a 250k baud rate from 1994-2015.
4. International started building vehicles with 500k baud rate in August 2015 - right in the middle of N9/N10/N13
production.
This means that early N9/N10/N13 engines use a 250k baud rate and late ones use 500k. It is important to make
sure we use replacement modules with the correct baud rate for the vehicle we are working on. A 250k ECM will
not be detected on a 500k vehicle - and vice versa. Using a module with the wrong baud rate can result in a
NavKal error 8 (N9/N10 & N13) or NavKal error 12 (N13).
Identifying Vehicle Baud Rate
Black = 250k
9-pin connector
color
Green = 500k
Note: A green plug (on the end of a communication cable) can connect to both
black and green receptacles. However, a black plug can only connect to black
receptacles.
For data link troubleshooting information, see IK0800080.
1994~ Aug. 2015 = 250k
Year
Body controller
type
~Aug. 2015-present = 500k
Gen 1 is 250k
2001-2006
Gen 2 is 250k
2007-2015
Gen 4 BC can be used for
250k or 500k
2015-present
Calibration 3rd character "T" = 250k (example: PBT5NPR2 or PMT6NPR2)
N9/N10
ECM
Calibration 3rd character "U" = 500k (example: PMU5NPR2 or PBU7NPR2)
Calibration 3rd character "T" = 250k (example: ANT5BCR1)
N9/N10
ACM
Calibration 3rd character "U" = 500k (example: ANU5BCR1)
Calibration 7th character "1" = 250k (example: RPRBBA10)
Calibration Name
N9/N10
DCU
N13 ECM
Calibration 7th character "2" = 500k (example: RPRBBA20)
Calibration 2nd character "S" or "T" = 250k (example: OSQXKKMA or
OTRXKKDA)
Calibration 2nd character "Y" or "Z" = 500k (example: OYQXKKMB or
OZPXKKAB)
Calibration 2nd character "S" = 250k (example OSANDXC)
N13 ACM
Calibration 2nd character "Y" = 500k (example OYANDXC)
Return to Top
Use Correct Module(s)
(See IK2600273 for help visually identifying these modules)
Engine Module
ECM
N9/N10
250k
N9/N10
500k
Parts Information
7095136c91 should show SID 914 on label (see TR2600003
for SID information)
Can Module Baud
Rate
Be Changed?
Yes
Who Can
Change
Baud Rate?
Dealer
Tech Services
ACM
3988097c2
Yes
DCU
7094050c1
No
No One
Yes
Dealer
ECM
7095136c91 should show SID 914 on label (see TR2600003
for SID information)
(Dealer cannot)
N13
250k
N13
500k
Tech Services
ACM
4063287c1
Yes
DCU
7098582c1
No
No One
ECM
7095698c1
Yes
Dealer
ACM
3988097c2
Yes
Tech Services
ECM
7095698c1
Yes
Dealer
ACM
4063287c1
Yes
Tech Services
(Dealer cannot)
Return to top
Determine The Baud Rate Of Replacement Module(s)
Connect module to programming station (see TL2900048 for instructions)
Launch Nexiq Device Tester (see IK2600293 for instructions)
1
Device: Select the communication cable
2
Protocol: Select "J1939:Channel=1;Baud=Auto" for any N-Series engine
3
Click "Start Test" button
4
Module baud rate shows at bottom of screen
Return to top
Switch The Baud Rate Of Your N9/N10 Or N13 Module(s)
N9/N10
ECM
(baud rate determined by calibration)
ACM
(baud rate determined by calibration)
DCU
(baud rate determined by hardware)
Connect only ECM to programming
Connect only ACM to programming
Connect only DCU to programming
1 station.
1 station.
1 station.
Do not connect any other modules.
Do not connect any other modules.
Do not connect any other modules.
Use the Device Tester to determine
Use the Device Tester to determine
Use the Device Tester to determine
module baud rate. See section
the module baud rate. See section
module baud rate. See section
2
2
2
"Determining Module Baud Rate"
"Determining Module Baud Rate"
"Determining Module Baud Rate"
for instructions.
for instructions.
for instructions.
3 Use NavKal to program as a blank
module to the vehicle's VIN.
3 Baud rate cannot be switched by
dealer. Start a Vehicle
Programming case file. Provide old
3 Baud rate is based on part number.
Baud rate cannot be changed.
Obtain the correct module part
& new ACM part numbers and buad
rate of new ACM.
number. See section "Acquire the
correct module(s).
N13
ECM
(baud rate determined by parameter 8921_)
1
ACM
(baud rate determined by calibration)
Connect ECM to the programming station (by itself - no
other modules)
Use device tester to determine module baud rate. See
2 section "Determining Module Baud Rate" for
instructions.
1
Connect ACM to the programming station (by itself - no
other modules)
Use device tester to determine module baud rate. See
2 section "Determining Module Baud Rate" for
instructions.
Baud rate cannot be switched by dealer. Start Vehicle
3 Programming case. Provide old & new ACM part
numbers and buad rate of new ACM.
3
Use NavKal to program as a blank module to the
vehicle's VIN.
4
Use NED to verify parameter 8921_ (TP PROG Baud
Rate) is set correctly
If needed, use these templates (250k / 500k) to change
5 8921_ to correct baud rate. (If needed, see IK1200603
for NED template instructions)
Return to top
OTHER RESOURCES
Master Service Information Site
Vehicle Programming Resource Center
IK2600283 Vehicle Programming Information Associated with Engine: N9/N10 (2014-2017)
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Copyright © 2026 Navistar, Inc.
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