# Service bulletin SB 393

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10119143
- Published by NHTSA: 2017\-10\-15
- Manufacturer's number: SB 393
- Manufacturer's date: 2012\-12\-07
- NHTSA component: ENGINE

## NHTSA's summary

This Service Bulletin informs affected customers that MCI was notified by Cummins Inc. that it has issued campaign C1241 that addresses a calibration issue, which results in the engine brakes being energized with 24 volts rather than the required 12 volts on Cummins ISX engines in model year 2011\-2012 MCI D model coaches, model year 2011\-2012 MCI E4500 model coaches, and model year 2011\-2012 MCI J4500 model coaches. This program is being performed only by Cummins Service Network and its authorized dealers, therefore, all parts and labor required for this program will be provided by Cummins.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10119143-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10119143-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2012 MCI D4000
- 2012 MCI D4005
- 2011 to 2012 MCI D4500
- 2011 to 2012 MCI D4505
- 2011 to 2012 MCI E4500
- 2011 to 2012 MCI J4500

JSON: [/v1/bulletins/10119143](/v1/bulletins/10119143)

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