×

Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

Hall Effect RPM sensor grounding

EFI Wiring Fundamentals

Forum Posts

Courses

Blog

Tech Articles

Discussion and questions related to the course Motorsport Wiring Fundamentals

= Resolved threads

Author
170 Views

Hi guys,

When grounding a hall effect sensor is it better to ground it to the ecu sensor ground pin or to the battery negative?

I normally use the sensor ground, but I would refer to the ECU documentation to make sure that's what they suggest for your ECU.

Most ECU manufacturers recommend to ground frequency-based sensors to the chassis, or your star earth point. Wherever you ground your injectors is probably a good spot. You definitely don't want to use the sensor ground, as the high frequency is likely to be a source of noise on the rest of the sensors.