Warranty Field Campaign
Campaign Number: c2718

Revision: A

BES CM2450 EV107B TMS Compressor Speed Setting Calibration Campaign

Released Date: 10-Jul-2025
Expiration Date (U.S. and Canada): 31-Jul-2026
Expiration Date (International): 31-Jul-2026

Attention
U.S. / Canadian Dealers
U.S. / Canadian Distr./Branches and Div. Offices (Automotive)
This is to revise and replace C2718 , dated 01-Aug-23. This revision is to:
1. Extend expiration date to 31-Jul-2026.
If additional information is required, please contact your Cummins Warranty Operations Group Leader.

Description
This Campaign is being issued to update the TMS Inverter Calibration on certain BES CM2450 EV107B units currently in the field. This Campaign authorizes certified
technicians to update the TMS Inverter to the latest calibration.

Action
In order to qualify for repair under this field action, a drive train system:
1. will be covered Regardless of coverage status, and
2. must show as OPEN on QuickServe® Online for this field action.

Note : The SSN list is attached for reference.
After verifying that the engine meets the above requirements, perform the following actions:
1. Call 1-800-CUMMINS for the latest TMS inverter calibration and Accelera service kit.
2. Update the TMS inverter with the latest calibration (PN6311669 PS47046106.dcf), or later.

Note : This calibration is different than the one for Campaign 2566. Please refer to Attachment B for detailed instructions on updating instructions.

Material Disposition
There are no materials involved in the field action.

Reimbursements
Parts
There are no parts covered in this field action.

Note : SRTs to gain access that are required to complete the repair, that are sufficiently explained in the claim narrative, may also be claimed on this
action.
Labor Using Applicable Access Code and Time
SRT Code

Description

00-90X

Administrative time

99-00A

TMS INVERTER CALIBRATION UPDATE (QTY 1 - .5
HRS)

Time (hrs)

Travel
Travel is covered under this field action. Towing is covered under this field action.

Note : Please schedule the Technicians time to maximize the number of units that can be repaired on a single visit. When filing claims for multiple
SSNs, where travel or towing is required, travel or towing can be filed to ONLY one (1) SSN. Where single unit update events apply, one round-trip is
claimable per vehicle.
Other Claimables
Consumables are covered under this field action.

Note : Additional parts, such as o-rings, gaskets and fasteners, that are required to complete the repair, but not listed, may be claimed in Other
Claimables. Please consolidate all consumables and claim them as one line item in Other Claimables titled CAMPAIGN SUPPLIES or other
appropriate selections. Please include brief summaries on the details of items claimed. A lack of documentation in the narrative may result in a
reduction in claim reimbursement or claim denial.

Claim Instructions
For Cummins Dealers, claims for this Field Campaign must be filed via RAPIDSERVE™ Web (rsw.cummins.com). For information regarding RAPIDSERVE™ Web, please
reference the "Warranty" tab in QuickServe® Online. If there are additional questions, please contact your local Cummins Distributor.
Claim Codes
Description

Code

Account Code:

65

Pay Code:

North America Distributor = X

Pay Code:

North America Dealer = D

Pay Code:

International Distributor = I

Pay Code:

International Dealer = R

Failure Code:

WMTGXB

Attachments
Click here to see c2718_ssn-list.xlsx
(/service/english/attachments/c2718_ssn-list.xlsx) Click here to see c2718_attachment-b.pdf
(/service/english/attachments/c2718_attachment-b.pdf)
Engine Family

Fuel System

Design Application

Market Application

All

All

Document History
Date

Details
Document Created; 01-Aug-2023
Extend expiration date; 09-Jul-2025

Last Modified: 10-Jul-2025

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Notes
If not covered, use electrical tape to cover the wire leads of the Sevcon Flash Harness.
This was provided for powering the Sevcon inverter with an external power supply. Do not use this
op on. Instead, we use one of the water pump connec ons to power the inverter instead, described
later in this sec on.
Cau on: Failure to cover these leads may result in accidental shor ng the low-voltage power supply.

Criteria
See criteria from the campaign document.

Parts
No parts are required for this campaign.

Tools Required
1. Accelera Service Kit
o Laptop with DVT Installed
o IXXAT CAN Module
o 3’ or 20’ 3-Pin Deutsch to 9-Pin D-Sub Adapter with Y-Connector
o Sevcon Flashing Harness
2. Sevcon Inverter DCF file. (Contact Cummins Care, 1-800-CUMMINS.)

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Ac ons: Connec ng to the Sevcon Inverter
1. Combine the IXXAT CAN Module, the 3’ or 20’ 3-Pin Deutsch to 9-Pin D-Sub Adapter with YConnector, and the Sevcon Flashing Harness. (Fig. 1)
2. If not covered, use electrical tape to cover the wire leads of the Sevcon Flash Harness.

Figure 1 Image containing the Accelera Service kit harnesses.

3. Disconnect the low-voltage connector from the Thermal Management System (TMS) Sevcon
inverter. Connect the same connector from the Sevcon flashing harness. (Fig. 2)

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Fig. 2 Image containing the TMS Sevcon Inverter, which acts as a compressor motor controller. The
low voltage connec on is shown in black. To undo this connector, press down on the top tab, then
pull back the lever. To reinsert, push the connector in par ally and li the lever un l it clicks.
4. Disconnect the harness from one of the water pumps. This por on of the harness will be used
to provide low-voltage power to the inverter during the flashing process. (Fig. 3)

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Fig. 3 Where the power connector of the Sevcon flashing harness connects to. To use this cable from
the TMS harness, disconnect from one of the water pumps (any will do) and connect it to the Sevcon
flashing harness.
5. Once everything is connected, connect the IXXAT CAN module USB connec on to the laptop provided
with DVT so ware.

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Ac ons: Flashing the Sevcon Inverter
1. Login in to the laptop and open the DVT application.
2. Once open, ensure that the right baud rate is selected. (Fig.4)
a. By default, this is typically 1 Mbit/sec.
b. The baud rate needed is 500kbit/sec.
c. Once selected, CAN messages should start appearing in the log (CAN
Window).

Fig. 4 Se ng the Baud Rate to the correct value allows for the system to pick up the CAN messages sent
by the Sevcon Inverter.
3. For the first me this so ware is used with the inverter, a pop-up should open asking if
you would like to create an EDS file. Click yes/OK.
a. This file acts as the “translator” for CAN messages. (Fig. 5)
b. Allow the process to finish loading before con nuing (Fig. 6)
c. If this pop-up is exited without clicking the right value, click “ping” on the main
window. This will rerun the handshaking process, and the pop-up should reappear.

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Fig. 5 pop-up to create EDS file to be able to interpret CAN messages.

Fig. 6 Let the loading bar finish!
4. Once the EDS file is created, several bu ons will appear on the UI on the middle-to-right-side of
the screen. Click on “Controller Se ngs”, then “Send DCF to unit”. (Fig. 7)
a. This file is the calibra on for the inverter.
b. If a pop-up occurs asking if you are ok with overwri ng t he exis ng DCF file, accept, as
this is the inten on.
c. Select the DCF file to upload.
d. Wait for the process to finish before con nuing. (Fig. 8)
e. A er loading, the so ware should be flashed.

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Fig. 7 Clicking controller se ngs, then “Send DCF to unit” sends the calibra on file to overwrite the
exis ng values on the Sevcon Inverter.

Fig. 8 Once again, let the loading bar finish.

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Monday, July 17, 2023

Ac ons: Addi onal Valida on
1. Download the inverter calibration. (Fig. 9)
a. To do so, click on "Controller Settings", then "Save DCF from unit".
b. Save the file to a known location.
c. Wait for the process to finish before countinuing.

Fig. 9 Where to click in order to save the DCF file that is stored in the Sevcon inverter.
2. To verify that the system is flashed properly, click on “Offline Calibra· on”, then
“Edit DCF file in helper” (Fig. 10)
a. Open the DCF file downloaded in Step 1.
b. Once opened, click on the “Local Motor Limits” bu on. (Fig. 11)
i. “Maximum Motor Speed” should now read 3000 rpm and
“Motor Overspeed Protec· on” should now read 3100 rpm.

Instruc ons on Flashing the TMS Inverter
Accelera Service Engineering

Fig. 10 where to click to compare two DCF calibra ons.

Fig. 11 How to view the local motor limit parameter

Monday, July 17, 2023