# PMU 24 LIN bus output

**URL:** <https://community.ecumaster.com/t/pmu-24-lin-bus-output/1997>\
**Category:** GENERAL\
**Created:** [August 6, 2024, 3:28pm UTC](https://community.ecumaster.com/t/pmu-24-lin-bus-output/1997 "2024-08-06T15:28:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![webdesaster](https://avatars.discourse-cdn.com/v4/letter/w/c5a1d2/32.png) [@webdesaster](https://community.ecumaster.com/u/webdesaster)\
**Post date:** [August 6, 2024, 3:28pm UTC](https://community.ecumaster.com/t/pmu-24-lin-bus-output/1997/1 "2024-08-06T15:28:17Z")

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Hi,

Pierburg CWA 400 pumps do not support PWM control anymore, since March they only support LIN bus for controlling pump speed. I want to use an ECUmaster PMU 24 to control that pump.  
Do you think in the near future there will be a software update for the PMU 24 to output a LIN bus signal?

Best regards,  
Claude

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<div class="post-metadata">

**Author:** ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)\
**Post date:** [August 6, 2024, 4:13pm UTC](https://community.ecumaster.com/t/pmu-24-lin-bus-output/1997/2 "2024-08-06T16:13:29Z")

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Hi,  
Unfortunately, that won’t be possible.  
LIN bus requires dedicated hardware that is not present in the PMU.