April 12, 2021 NHTSA CAMPAIGN NUMBER: 21V253000
Electric Drivetrain Malfunction
An undetected high voltage isolation can expose service personnel to high voltage, increasing the risk of injury.
NHTSA Campaign Number: 21V253
Manufacturer Blue Bird Body Company
Components ELECTRICAL SYSTEM
Potential Number of Units Affected 292
Summary
Blue Bird Body Company (Blue Bird) is recalling certain 2018-2021 Vision and All American school buses. The electric drive train cannot detect isolation faults when the high voltage contactors are closed.
Remedy
Blue Bird will notify owners, and dealers will update the Vehicle Control Unit software or install a different combination of High Voltage Power Distribution Unit hardware, free of charge. The recall began on May 22, 2021. Owners may contact Blue Bird customer service at 1-478-822-2242. Blue Bird’s number for this recall is R21BD-SB.
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.safercar.gov.
*** IMPORTANT SAFETY ***
NHTSA Recall No. 21E-024
Interim Recall Notice
May 22, 2021
Dear Cummins
Customer:
This notice is sent to you in accordance with the requirements of the National Trafic and Motor Vehicle Safety Act. Cummins Inc. has decided that a defect which relates to motor vehicle safety exists in certain Cummins PowerDrive TM electric drivetrain systems that were manufactured between June 1, 2018 and March 8, 2021.
This notice applies to the PowerDrive electric drivetrain systems in your vehicle listed on the enclosed table.
WHAT IS THE PROBLEM?
The subject electric drivetrain systems, as originally designed, did not include continuous isolation measurement capability to detect isolation faults in the system (between high voltage components and vehicle chassis ground) when the high voltage contactors are closed.
If a high voltage isolation fault is not detected and service personnel do not follow prescribed service procedures, they may be exposed to high voltage, increasing the risk of electrical shock. This issue does not present a hazard to occupants of a vehicle during operation.
WHAT WILL CUMMINS DO?
Cummins is currently developing the permanent remedy for this issue. You will receive a second notification to inform you when the final remedy is available and to provide instructions to schedule the recall for your PowerDrive system.
WHAT SHOULD YOU DO?
No action is necessary until you receive a second notification from Cummins.
If you have questions or concerns about this recall, please contact your local Cummins Distributor or authorized warranty dealer. You may also contact Cummins Care at 1-800- CUMMINS (1-800286-6467) or visit our website at care.cummins.com.
If you have a complaint relative to this recall, you may report it to the following:
Administrator
National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
You may also call the toll-free Vehicle safety Hotline at 1-888-327-4236 (TTY: 1-800424-9153); or go to https://vvww.safercar.qov.
If you have not registered your Cummins product. please complete the enclosed registration card or register your product at https://prodreq.cummins.com/prodreq/#/webform/contactlnfo.
If you are no longer the owner of the vehicle listed on the enclosed table, please forward this notice to the new owner or provide the new owner’s contact information to Cummins so that we can notify them of this recall.
Federal law requires vehicle lessors receiving this recall notice to forward a copy of this notice to the lessee within ten (10) days. Also, it is a violation of Federal law for a dealer to deliver new vehicle or equipment covered by this recall notice under a sale or lease until the defect has been remedied.
Cummins is taking this action in the interest of safety and satisfaction with our products. We apologize for any inconvenience and thank you for your attention to this matter.
Sincerely,
Campaign Administrator
Cummins Inc.
21E024 Cummins Electric Drivetrain PD7000 Isolation Faults Can Go Undetected
http://oemdtc.com/6095/21e024-cummins-electric-drivetrain-pd7000-isolation-faults-can-go-undetected
8 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| BLUE BIRD | ALL AMERICAN | 2018-2021 |
| BLUE BIRD | VISION | 2018-2021 |
12 Associated Documents
Recall 573 Report- Amendment 1
RCLRPT-21V253-4493.PDF 215.707KB
ISSUED Owner Notification Letter(Part 577)
RCONL-21V253-7120.pdf 35.346KB
Recall Quarterly Report #1, 2021-2
RCLQRT-21V253-2763.PDF 211.131KB
Defect Notice 573 Report
RCLRPT-21V253-7707.PDF 215.218KB
Recall Acknowledgement
RCAK-21V253-4287.pdf 645.654KB
Recall 573 Report- Amendment 3
RCLRPT-21V253-4228.PDF 215.93KB
Manufacturer Notices(to Dealers,etc)
ISSUED Owner Notification Letter(Part 577) – Final Remedy Available Notice from Cummins
Recall Quarterly Report #3, 2021-4
RCLQRT-21V253-9383.PDF 211.319KB
Recall 573 Report – Amendment 2
RCLRPT-21V253-4306.PDF 215.933KB
Recall Quarterly Report #2, 2021-3
RCLQRT-21V253-5882.PDF 211.226KB
Recall 573 Report – January 19, 2022
RCLRPT-21V253-8215.PDF 216.488KB
Latest Recalls Documents
Heavy Duty Truck Reprogramming
Description:
Designed for flexibility, the USB-Link 3 Wired Edition connects to your PC, tablet, or smartphone with a USB cable, allowing techs to directly connect to a device when working in the field or during signal interruptions.
Built to support the latest protocols (CAN FD, DoIP) and compatible with a wide range of OEM diagnostics software, the USB-Link 3 is our most advanced VCI to date, with the performance and technology you can rely on well into the future.
The USB-Link™ 3 comes with the following:
- Latching USB Cable (PN 404032)
- 9-Pin Deutsch Adapter, 1 Meter (PN 493128)
- J1962 Adapter (16-Pin OBD II, 1 Meter (PN 491113)
The USB-Link™ 3: Wireless is also available (PN 121052).
Specifications
Vehicle Network Protocol Support
CAN FD / J1939 FD / ISO15765 FD - 250K, 500K, 1M b/s with auto baud detection
Single wire CAN (SWCAN)
ISO 11898-3 Fault Tolerant CAN (FTCAN)
Diagnostics Over Internet Protocol (DoIP)
J1708
J1850 VPW (Class 2)
ISO PWM (SCP)
ISO 9141 / KWP2000 (ISO 14230) K/L line
ALDL 9600 and 8192 baud
ATEC 160 baud
Windows® Vehicle Communication API
Windows® Vehicle Communication API
RP1210 a/b/c
J2534 (2004 draft)
J2534-1 partial implementation (commercial vehicle focused)
Operating System Compatibility
iOS
Android™
Windows® 10, 11
Interfaces to Computing Platforms
USB 2.0 (vehicle-to-PC connectivity)
Bluetooth® 2.1 + EDR
Wi-Fi (dual band)
Compatible Software
Detroit Diesel Diagnostic Link
CAT Electronic Technician (On-Highway only)
Cummins Insite
International - ServiceMAXX Fleet Pro
Hino eXplorer
Volvo PTT
VCAD Elite Mack/Volvo
V-MAC Service Tools
Allison DOC® For PC-Service Tool - Protocols Supported: J1939, J1708/J1587, and J1850
Allison DOC® For Fleets (1000/2000) - Protocols Supported: J1939, J1850
Allison DOC® For Fleets (3000/4000) - Protocols Supported: J1939, J1708/J1587
Eaton ServiceRanger
Bendix ACom
WABCO Toolbox
Freightliner ServiceLink
International ABS
International DLB
International Intune
International IPC v2.02
PACCAR DAVIE4
Daimler Truck
DiagnosticLink Order Site:
DiagnosticLink Direct Link:
https://diagnosticlink.nexiq.com/DTNA/Default.aspx
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