KC-2112

Service Bulletin Details

Public Details for: KC-2112

Programming failure - chassis with cummins engine and an allison transmission


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6/30/22, 1:30 PM
Article
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Programming Failure - Chassis With Cummins
Engine And An Allison Transmission
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Internal Content
It has been found that some units with a Cummins engine and an Allison
transmission may be able to read parameters but unable to program
parameters.
Advise to follow this procedure :
1. Remove the fuse for the Allison transmssion.
2. While disconnected from the truck, finish work in PTT and remove this
vehicle from the " Latest Selections " list.
3. Connect to the truck’s 16 pin diagnostic connector and read the vehicle
data (minus the Allison and Cummins). Parameter programming should
now function properly for chassis related programing with the Allison
disconnected.
4. Reconnect the fuse and read/clear DTC’s.
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Tags
cummins
allison
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