# Problems with DBW 0280750156

**URL:** <https://community.ecumaster.com/t/problems-with-dbw-0280750156/4914>\
**Category:** EMU BLACK / CLASSIC\
**Created:** [December 16, 2025, 7:23pm UTC](https://community.ecumaster.com/t/problems-with-dbw-0280750156/4914 "2025-12-16T19:23:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Julien-Meca-Solution](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/julien-meca-solution/32/5053_2.png) [@Julien-Meca-Solution](https://community.ecumaster.com/u/Julien-Meca-Solution)\
**Post date:** [December 16, 2025, 7:23pm UTC](https://community.ecumaster.com/t/problems-with-dbw-0280750156/4914/1 "2025-12-16T19:23:41Z")

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Hi,

I installed a BOSCH DBW 0 280 750 156 with an EMU BLACK and I can’t get it to work properly.

It doesn’t open fully and keeps clicking and rattling.

I checked my wiring, everything seems fine to me.

G2-Hbridge1A to Pin4

G10-Hbridge1B to Pin1

B38-SensorGround to Pin2

B26- +5V to Pin3

B4-Analog2 to Pin5

B17-Analog3 to Pin6

I tested another one, and it does the same thing.

Have you ever encountered this problem?

Is it a compatibility issue?

Is the EMU BLACK faulty?

Thanks for your help.

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**Author:** ![k420\_racing](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@k420\_racing](https://community.ecumaster.com/u/k420_racing)\
**Post date:** [December 17, 2025, 8:27pm UTC](https://community.ecumaster.com/t/problems-with-dbw-0280750156/4914/2 "2025-12-17T20:27:48Z")

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I assume you’ve done the DBW calibration? Are the pos MIN/MAX voltages correct? Also check the pos input settings from the pedal? IE input & inverse. AI like chatGPT is very useful for guidance/troubleshooting, especially if you prompt it properly.

DBW side inputs

| **Pin** | **Abbreviation** | **Description** |
| --- | --- | --- |
| Pin 1 | M- | Negative Supply for Motor |
| Pin 2 | IPM / UIP | Sensor Ground (Rising) / Sensor Supply (Falling) |
| Pin 3 | UIP / IPM | Sensor Supply (Rising) / Sensor Ground (Falling) |
| Pin 4 | M+ | Positive Supply for Motor |
| Pin 5 | IP2 | Sensor 1 Signal |
| Pin 6 | IP1 | Sensor 2 Signal |

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**Author:** ![Fractional](https://avatars.discourse-cdn.com/v4/letter/f/49beb7/32.png) [@Fractional](https://community.ecumaster.com/u/Fractional)\
**Post date:** [January 11, 2026, 12:17am UTC](https://community.ecumaster.com/t/problems-with-dbw-0280750156/4914/3 "2026-01-11T00:17:02Z")

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I can hear mine rattling as well but the calibration tool finishes its calibration without errors. I thought it was part of the process?