Mini R56 / BMW N14B16A

EMU BLACK / CLASSIC
1

Hi,

Having a cam sensor issue.
R56 Mini Cooper S, N14B16A, +5v hall sensors for crank and cam.
Crank sensor working perfectly fine, clean trace on scope and car runs in wasted spark. Obviously it wants to be run sequential ignition/injection, but there is no trace at all on the scope from the cam sensor.

Cam wiring is correct pin order, checked with factory manual and Autodata.
+5v and signal ground present at connector and signal return wire back to correct camsync #1 pin at EMU Black, all verified with DMM via continuity and voltage check with EMU Black active.

Tried new genuine BMW cam sensor and original sensor works in another car.

Cam has 2 large teeth and one small tooth, not a regular toothed wheel, pic attached.

Sensor air gap looks appropriate compared to a standard N14 engine.

Current trigger settings also attached from tuner elsewhere (I am not a tuner, just wiring and a little setup).

Greg (ECUmater UK) is obviously a genius and is going to take a look when back from Holland but with no trace on the scope at all, I don’t know what we can see really.

Has anyone one one of these and has the trigger settings?
I have never had to use an external pullup on a hall sensor on any engine, but will it need one here?

With these engines being direct injection standard, not many people seem to use standalone. This one has moved to port injection and EMU Black, ADU, PMU, etc.

Thanks for your help.

N14 cam
N14 cam283×283 16 KB

R56 triggers
R56 triggers1098×730 41.1 KB

2

Not wiring.
Not sensor.
No ideas?

Everyone makes mistakes and every company can send out a duff sensor now and then, but I’ve checked for both of these scenarios repeatedly, as have other people and companies, and this doesn’t seem to be the case.

Any input?

3

firstly check sensor supply some BMW works only on 12v supply .
second back-probe secondary input with good meter or oscilloscope .
third check if someone did not test input by inserting multimeter probe to terminal and “open terminal”
one more option bench test sensor if is actually hall effect (not all 3 wires are hall effect) or for example simens type which shift wave form.

4

Checked via BMW factory diagram, it is +5v hall as is the crank sensor not like the earlier BMW +12v halls :slight_smile:

Checked with multimeter and pin order and +5 supply, signal ground and signal back to correct EMU pin are all correct.

Will try and bench test it the sensor itself before asking you to spend more time on team viewer.

Before moving to EMU Black it used this sensor type with +5v supply with an SCS Delta ECU.