KNB – ECU Update – 2020-2021 Honda CRF1100 Africa Twin Motorcycles

September 1, 2022 NHTSA CAMPAIGN NUMBER: 22V662000

Engine Stall or Loss of Drive from Software Error

An engine stall or a loss of drive power can increase the risk of a crash or injury.

 

NHTSA Campaign Number: 22V662

Manufacturer Honda (American Honda Motor Co.)

Components ENGINE AND ENGINE COOLING

Potential Number of Units Affected 1,561

 

Summary

Honda (American Honda Motor Co.) is recalling certain 2020-2021 CRF1100 Africa Twin motorcycles equipped with a dual-clutch transmission (DCT). A software error in the engine control unit (ECU), may disconnect the controller area network (CAN) communication and release the clutch, which can result in an engine stall or a loss of drive power.

 

Remedy

Dealers will update the ECU software, free of charge. Owner notification letters are expected to be mailed October 31, 2022. Owners may contact Honda customer service at 1-866-784-1870. Honda’s number for this recall is KNB.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Honda Motorcycle or Scooter has a Recall

 


2021 Honda CRF1100 Africa Twin
2021 Honda CRF1100 Africa Twin

 


BACKGROUND

Honda is launching a SAFETY RECALL on CERTAIN 2020 thru 2021 CRF1100D/D4 (DCT ONLY ) motorcycles to update the software of the Engine Control Unit (ECU). A potential defect with the ECU processing may result in engine stall, increasing the risk of a crash or injury.

 

Customer Notification

American Honda intends to mail customer letters to all owners of affected 2020 thru 2021 CRF1100D/D4 motorcycles in late October 2022. Customers will be informed that their motorcycle may be affected by a safety related defect and will be advised to make an appointment with an authorized Honda dealer for repair.

 

REPAIR PROCEDURE

Note:

  • The ECU update procedure will take approximately four minutes. Failure to follow this procedure may result in the ECU being permanently damaged and will not be covered by AHM warranty.
  • Prior to the update procedure, ensure your laptop screen saver, hibernate, or sleep modes are disabled. Be sure to monitor progress to ensure ECU update procedure is not interrupted.
  • Use Windows 8 or Windows 10.
  • Ensure the laptop used for the ECU update procedure is fully charged or connected to a power source.
  • Before beginning the ECU update procedure, ensure the vehicle battery is fully charged with ≥ 12.4 V.
  • Before starting the ECU update procedure, check that all connections are fully set.

 

CONFIRM MCS SOFTWARE VERSION

Verify that the Motorcycle Communication System (MCS) program on your computer has the latest software version (V2.037 or higher).

If an update is needed, download the latest MCS software on iN by following the path:

iN > Service > TechLine > TechLine > Diagnostic Tools > MCS > MCS Software Download

 

Download Updated Software

1. Navigate to the ECM Software Updates page on iN by following this path:

iN > Service > TechLine > TechLine > Diagnostic Tools > MCS > ECM Software Updates

2. Click the link 2020 through 2021 CRF1100D/D4 ECU Update Procedure to download the software.

 

3. Copy the file (.rwg) from the folder shown.

Paste the file to the MCS directory in the laptop’s hard drive (C:).

Note: Do not change the file name. Only save the rewrite file. Do not save the file folder that the file downloaded from.

C:\Motorcycle Communication System\Rewrite Files

 

Note:

  • 38770-MKS-A53_M1.rwg is for CRF1100D
  • 38770-MKS-AV3_M1.rwg is for CRF1100D4

 

CONNECTING THE MCI

Use the following steps to connect the Motorcycle Communications Interface (MCI) to the computer and motorcycle.

1. Connect the MCI to the computer using the USB cable.

2. Locate the DLC connector by unlocking the pillion seat [1] using the key [2]. Remove the pillion seat.

 

3. Connect the MCI to the red DLC connector [1].

 

ECU UPDATE PROCEDURE

Note: To avoid possible damage to the ECU, ensure the battery is fully charged and battery cables remain secure. Do not loosen or disconnect during update.

1. Start the MCS program. Key “On” the ignition.
Enter the VIN, mileage, model and year, then click “OK”.

Note: If there are stored DTCs, clear them using MCS before performing the update.

2. Select the Maintenance tab then ECM Update.

 

3. Select the PGM-FI file from the table as shown, click the Select button next to the software revision file.

 

Note: If files are not saved correctly, an error may appear like shown below. Check the files are uploaded in the correct location (see Download the ECM Update File section above).

 

4. When the Updated ECU ID information populates on-screen as shown, click the Start button.

 

Note: ECU ID numbers will change for each vehicle type. The numbers shown below are for example only. The PGM-FI rewrite process will take approximately four minutes, indicated with a progress bar in green.

 

5. Once the rewrite process is complete, turn the ignition switch to the OFF position and back ON within ten seconds.

 

6. When the Control Module Update Completed window appears, click OK.

 

Note: A DTC may be triggered during the update. Simply clear the DTC using MCS.

The ECU ID should change from 01039E0401 or 01039E0403 (depending on the model and year) to 01039E0404.

* The leading eight (8) digits of the ECU ID will vary based on the model and year.

 


Chronology :

July 2020
Honda received the first report of an engine stalling while riding issue in the Japan market.

September 2020
Honda received a report of engine stalling while riding issue from the Italian market.

December 2020
Honda received a report of engine stalling while riding issue from the German market.

March 2021
Honda repurchased the German vehicle involved in the December 2020 report to analyze the issue; however, Honda was unable to recreate the symptom.

September 2021
Honda confirmed the issue in an Italian market vehicle.

October – November 2021
Honda researched and analyzed the issue.

November 2021 – June 2022
Honda continued to investigate the issue with the possibility of abnormal data production when OBD data was recorded.

August 10, 2022
Honda received the first U.S. market report with two vehicles stalling while riding.
Honda confirmed the issue and the range of affected vehicles.

August 26, 2022
Honda determined that a defect related to motor vehicle safety existed and decided to conduct a safety recall.

As of August 29, 2022, Honda has received a total of two (2) warranty claims in the U.S. market. No crashes or injuries related to this issue were reported.

 


2 Affected Products

Vehicle

MAKE MODEL YEAR
HONDA CRF1100 AFRICA TWIN 2020-2021

 


5 Associated Documents

Manufacturer Notices(to Dealers,etc)

RCMN-22V662-8637.pdf 38.662KB

RCMN-22V662-8637

 


Recall Acknowledgement

RCAK-22V662-7723.pdf 645.253KB

RCAK-22V662-7723

 


Remedy Instructions and TSB

RCRIT-22V662-0312.pdf 1269.205KB

RCRIT-22V662-0312

 


Defect Notice 573 Report

RCLRPT-22V662-3002.PDF 214.702KB

RCLRPT-22V662-3002

 


Manufacturer Notices(to Dealers,etc)

RCMN-22V662-2822.pdf 45.219KB

RCMN-22V662-2822

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=22V662&docType=RCL

 


 

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