# No Voltage Output

**URL:** <https://community.ecumaster.com/t/no-voltage-output/4568>\
**Category:** PMU\
**Created:** [October 11, 2025, 2:57pm UTC](https://community.ecumaster.com/t/no-voltage-output/4568 "2025-10-11T14:57:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Flute](https://avatars.discourse-cdn.com/v4/letter/f/3ec8ea/32.png) [@Flute](https://community.ecumaster.com/u/Flute)\
**Post date:** [October 11, 2025, 2:57pm UTC](https://community.ecumaster.com/t/no-voltage-output/4568/1 "2025-10-11T14:57:24Z")

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So car was fine last month. Been busy so not touched it. Came to it today and it’s not working. PMU is say output is switched LED is on but getting no voltage out of it? Current jumps up But 0 volts ???

 ![IMG_20251011_153914_535](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/b/bbf0d5c98581cbf661285334b273e31e8cb4202c.jpeg)

Any ideas please

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**Author:** ![ProperTuningOG](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/propertuningog/32/3481_2.png) [@ProperTuningOG](https://community.ecumaster.com/u/ProperTuningOG)\
**Post date:** [October 12, 2025, 12:05am UTC](https://community.ecumaster.com/t/no-voltage-output/4568/2 "2025-10-12T00:05:48Z")

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Did you unselect that in the logger? If you did, live data will not be shown.

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<div class="post-metadata">

**Author:** ![Flute](https://avatars.discourse-cdn.com/v4/letter/f/3ec8ea/32.png) [@Flute](https://community.ecumaster.com/u/Flute)\
**Post date:** [October 12, 2025, 6:45am UTC](https://community.ecumaster.com/t/no-voltage-output/4568/3 "2025-10-12T06:45:04Z")

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Not sure what you mean. I can watch the inputs on the screen. See me turn on the output. Current on output changes but voltage stays at Zero volts

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**Author:** ![FloorItGarage](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/flooritgarage/32/61_2.png) [@FloorItGarage](https://community.ecumaster.com/u/FloorItGarage)\
**Post date:** [October 13, 2025, 4:54am UTC](https://community.ecumaster.com/t/no-voltage-output/4568/4 "2025-10-13T04:54:14Z")

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Which channel should we be looking at?

The “emulated” makes me think you’re using the output emulator to turn on the output? or how are you turning on the output?