Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SM2202
SM2022 EV Maintenance and Service Documentation This Service Memorandum is to announce information on Cummins Power Electric buses now available at Quickserve Online. Dealer must have access to Quickserve to obtain these service maintenance and repair procedures.
SM2203
SM2203: EV Recommended Starting Procedure This Service Memorandum is to announce the proper starting procedure to be followed for all Cummins EV powered units. The sequence is required due to multiple electronic modules required to wake up and start communicating over the CAN (Controller Area Network) on EV Power Train Productâ.
SU2201
Cummins recently issued Temporary Repair Practice (TRP2484) for certain vehicles with DEF sensor failures in which DEF sensor replacement parts are not available. This provides a temporary ECM calibration that inhibits engine warning messages for communication errors with the DEF sensor allowing continued operation without engine derate. Regulators are allowing for this temporary calibration to be loaded in the engine ECM by a Cummins authorized repair location if the DEF sensor fails. This temporary calibration does not repair the failure therefore a final repair must be performed and the original calibration be re-installed. Field Service has been requesting an ECM image be uploaded within the support ticket as part of the diagnostics and is carried over into Service Update 2201 (SU2201). In order to receive an authorization code and utilize Cummins TRP2484, you must follow the process, as outlined in SU2201. The specific component affected is Assembly Code: 35-300 Emissions Components.
SU2105
The intent of Service Update SU2105 is to provide service notification of a running product improvement part change to the relay used for diesel exhaust fluid (DEF) line heaters. The new DEF line heater relay will be "Diode Suppressed". The new relay change is being made to improve circuit fault diagnostic capabilties. This change implements two new diode suppressed relay part numbers based on bus model application. The new relays are easily distinguishable by color. They have a yellow high temp tape wrap. Models Affected: Vision (BBCV), All American, and TX4 (T3FE, T3RE), with EPA/CARB certified on highway Cummins® Diesel Engine Features Built After 07/26/2021 Subject: The intent of Service Update SU2105 is to provide service notification of a running product improvement part change to the relay used for diesel exhaust fluid (DEF) line heaters. Information: The new DEF line heater relay will be "Diode Suppressed". The new relay change is being made to improve circuit fault diagnostic capabilities. This change implements two (2) new diode suppressed relay part numbers based on Blue Bird bus model application. The new relays are easily distinguishable by color. They have a yellow high temp tape wrap. New Diode Suppressed Relay Type, Part Number, And Application: Diode Suppressed âMicro Relayâ 10073451 â All American and TX4 (T3FE, T3RE) with Cummins Diesel Engine Features Built After 07/26/2021 Diode Suppressed âMini Relayâ 10073452 â Vision (BBCV) with Cummins Diesel Engine Features Built After 07/26/2021
SU2104
The intent of Service Update SU2104 is to provide a quick reference document of âRequired Dealer Service Support Softwareâ for servicing, a current production model Blue Bird Bus. The list includes standard OEM bus and truck service software such as; Cummins INSITE®, and Allison DOC®, and it also includes unique service software applications that are required to fully service a Blue Bird bus such as; AMETEK®, ACTIA®, and MODINE®. These software applications provide troubleshooting support and software update capabilities. This document is intended to be a âliving documentâ and will be updated as advancements are made in technology and product improvements are implemented. Therefore, to ensure you always have the latest revision it is highly recommended that the document be downloaded from the Blue Bird Vantage website.
SU2103
The intent of Service Update SU2103 is to announce a new Shaw Development Technical Bulletin. The Technical Bulletin is intended to guide Shaw Development customers in troubleshooting fault codes related to the DEF tank assembly on Cummins engine equipment. This document is intended to be a âliving documentâ, and the details and processes within can/will change as system designs evolve, or other new information comes to light. Access to this Shaw Development Technical Bulletin will be available on the Blue Bird Vantage website.
SU2101
The intent of Service Update SU2101 is to provide instruction when windshield replacement is required on buses equipped with Blue Bird Factory Installed Mobileye Collision Mitigation Features. Applicable Blue Bird features: 38105-34 âMOBILEYE,COLLISION MITIGATION,250kBâ USA 38105-35 âMOBILEYE,COLLISION MITIGATION,500kBâ USA (NEA Only)
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.