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NHTSA ID Number: 10143226

Manufacturer Communication Number: C1941D

TSB/Document Date: 2018-07-30


Summary

This field action authorizes certified repair locations to recalibrate the ECM and upfit the unit with an improved SCR Catalyst on certain ISL9 CM2350 L101 engines installed in Transit Bus Applications. New SCRs delete the NH3 Sensor and move from a three (3) wire harness to a NEW two (2) wire harness assembly. This is a revision to a previously submitted communication.


ISL CM2350 Product Improvement Campaign for Transit Applications

Page 1 of 6

Warranty Field Campaign
Campaign Number:
c1941

Revision: D

ISL CM2350 Product Improvement Campaign for
Transit Applications

Released Date: 12-Jun2018
Expiration Date (U.S.
and Canada): 30-Sep2022
Expiration Date
(InternationaleBay logo): 30-Sep2022

ISL CM2350 Product Improvement Campaign
for Transit Applications
Attention
• U.S / Canadian Dealers
• U.S / Canadian Distr./Branches and Div. Offices (Automotive)
This is to revise and replace C1941-C, dated 12-Jan-18. This revision is to:
1. Narrative change on the retroactive coverage,
If additional information is required, please contact your CumminseBay logo Warranty
Operations Group Leader.

Description
This field action authorizes certified repair locations to recalibrate the ECM and upfit the
unit with an improved SCR Catalyst on certain ISL9 CM2350 L101 engines installed in
Transit Bus Applications.

Note : This field action provides retroactive coverage for repairs made in
anticipation of and prior to the release of this publication. Retroactive coverage
will be supported for repairs made on or after 15 June 2017.

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

7/2/2018

ISL CM2350 Product Improvement Campaign for Transit Applications

Page 2 of 6

Action
In order to qualify for repair under this field action, an engine:
1. will be covered Regardless of coverage status, and
2. must show an OPEN status for this field action on QuickServe® Online.
After verifying that the engine meets the above requirements, perform the following
actions:
1. Please refer to Attachment B. A matrix of ECM base codes and CPLs are provided
for your consideration.
2. New SCRs delete the NH3 Sensor and move from a three (3) wire harness to a
NEW two (2) wire harness assembly. Install the appropriate SCR and a new two (2)
wire harness assembly.

Note : Where available, RX parts are to be used to replace the SCR.
3. Download the latest calibration available on QuickServe® Online. Recalibrate the
ECM as described in Procedure 019-032 in Service Manual 4310787.
4. Complete "Label, Authorized Change," CumminseBay logo Part Number 5297400. Clearly
print or type "ECM Calibration Update" in the center box. Fill in the Campaign
Number, Distributor or Dealer Code and Date information. Peel off the backing
material and install the label on the engine valve cover near the engine data plate.
There is a clear protective cover on this label. Peel the backing off of this cover and
push the clear cover over the printed material.
5. File one claim for all labor and travel associated with this repair. Provide
documentation of the ECM calibration revision codes from before and after the
recalibration in the claim narrative.

Material Disposition
Materials removed as a result of this field action must be sent to ReCon.

Reimbursements
Parts
Note : All SCRs are listed as optional. Use RX parts where available. All wiring
harness listed are also optional. Claim only the parts required to complete the
repair. Additional parts, such as o-rings, gaskets and fasteners, that are

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

7/2/2018

ISL CM2350 Product Improvement Campaign for Transit Applications

Page 3 of 6

required to complete the repair, but not listed, may be claimed if sufficiently
explained in the claim narrative.
The following parts are covered under this field action:
Part Number

Quantity

Description

286663600

1

GSK,AFM (OPTIONAL)

287145100

1

GSK,AFM (OPTIONAL)

388639600

1

LIT,ELE

435404200RX

1

DEV,AFT (OPTIONAL)

435404400RX

1

DAV,AFM (OPTIONAL)

435405200RX

1

DEV,AFT (OPTIONAL)

435406200RX

1

DAV,AFM (OPTIONAL)

435406700RX

1

DEV,AFT (OPTIONAL)

437659300

1

DEV,AFT (OPTIONAL)

437666000RX

1

DEV,AFT (OPTIONAL)

437667600RX

1

DEV,AFT (OPTIONAL)

437667800RX

1

DEV,AFT (OPTIONAL)

437741100

1

HAR,WRG (OPTIONAL)

437741200

1

HAR,WRG (OPTIONAL)

437741300

1

HAR,WRG (OPTIONAL)

437741400

1

HAR,WRG (OPTIONAL)

439467400

1

DAV,AFM (OPTIONAL)

529740000

1

LABEL, AUTHORIZED
CHANGE (TAG)

536625700

1

DAV,AFT (OPTIONAL)

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.
Note : All SRTs listed are OPTIONAL. Select ONLY the appropriate SRTs for
the repair performed.
Labor Using Applicable Access Code and Time
SRT Code
00-90X

Description

Time (hrs)

Administrative time

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

7/2/2018

ISL CM2350 Product Improvement Campaign for Transit Applications

SRT Code

Description

00-90X

Administrative Time Open and Close Repair
Order (Road Repairs)

08-142

Belt Guard - Remove and
Install, Each

11-803

Aftertreatment SCR
Catalyst - Remove and
Install

17-124

Floorboard - Remove and
Install (Automotive, Bus,
and Recreational Vehicle
Applications only)

17-153

Engine Side Panels or
Doors (Bus Applications),
(Without Quick Release
Clamps) - Remove and
Install, Each

17-154

Mobile Vehicle/Equipment
Lift System- Set Up

17-157

Back Seat - Remove and
Install (Bus Application)

17-901

Stamp Engine Data
Plate/Apply Emission
Sticker

17-904

REAR ROOF TOP PANEL
(BUS AND RV
APPLICATIONS) REMOVE AND INSTALL

19-611

Engine Control Module
(ECM) CalibrationTransfer (CM
2250/CM2350)

Page 4 of 6

Time (hrs)

Travel
Travel is covered under this field action. Towing is not covered under this field action.

Other Claimables

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

7/2/2018

ISL CM2350 Product Improvement Campaign for Transit Applications

Page 5 of 6

Consumables are covered under this field action.

Claim Instructions
For CumminseBay logo 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 CumminseBay logo Distributor.

Claim Codes
Description

Code

Account Code:

65

Pay Code:

Distributor = X

Pay Code:

Dealer = D

Pay Code:

InternationaleBay logo = I

Failure Code:

WUSSCV

Attachments
Click here to see c1941-a_esn-list.xls

(/service/english/attachments/c1941-a_esn-list.xls)
Click here to
see c1941_ecm_base_calibrations_and_cpls_attach-b.pdf
(/service/english/attachments/c1941_ecm_base_calibrations_and_cpls_attach-b.pdf)
Engine Family

Fuel System

Design Application

Market Application

Automotive

Bus

Last Modified: 12-Jun-2018

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

7/2/2018

ISL CM2350 Product Improvement Campaign for Transit Applications

https://quickserve.cummins.com/qs3/pubsys2/xml/en/campaign/2019/c1941.html

Page 6 of 6

7/2/2018

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TSB/Document ID: C1941D

Replacement Service Bulletin Number:

MFR Communication Date: 2018-06-12

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: ENGINE AND ENGINE COOLING

MFR Component System:

MFR Component Subsystem:


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