The intent of Service Update SU2105 is to provide service notification of a running product improvement...
Blue Bird technical service bulletin SU2105 for 2022 Blue Bird All American School Bus, 2022 Blue Bird Vision School Bus and 2022 Blue Bird All American Transit Bus and others.
- Bulletin number
- SU2105
- Component
- Electrical system
- Summary
- 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 “Micro Relay” 10073451 – All American and TX4 (T3FE, T3RE) with Cummins Diesel Engine Features Built After 07/26/2021 Diode Suppressed “Mini Relay” 10073452 – Vision (BBCV) with Cummins Diesel Engine Features Built After 07/26/2021
Owners of these vehicles have filed 1 complaints in the electrical category.
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