# DBW Issue EMU Black

**URL:** <https://community.ecumaster.com/t/dbw-issue-emu-black/4387>\
**Category:** GENERAL\
**Created:** [September 13, 2025, 8:21pm UTC](https://community.ecumaster.com/t/dbw-issue-emu-black/4387 "2025-09-13T20:21:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mx83JZ](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@Mx83JZ](https://community.ecumaster.com/u/Mx83JZ)\
**Post date:** [September 13, 2025, 8:21pm UTC](https://community.ecumaster.com/t/dbw-issue-emu-black/4387/1 "2025-09-13T20:21:58Z")

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Hello,

i have an EMU Black running DBW. My setup is a 350z nismo pedal and TB is a bosch 280 750 156. I am having trouble getting the throttle to actuate. The wiring has been verified multiple times now, grounds are good. I cannot run the calibrate tool. Output test does not work for hbridge 1A/B, something to note every once in a while when I turn the ECU on i will hear the TB humming with no movement..? Manually actuating the throttle blade i can see both sensors inputs changing. The same goes for the throttle pedal both inputs are working properly.

how common is it for these hbridges to fail?

What else should i check?

This issue doesnt seem very common, and im in need of assistance.