Engine position/reference trace

[greenamex2]

Hi all

How does my Engine position and reference wave forms look?

And, finally, after 15 years...

Screenshot 2020-12-12 143308.png (272.68 KiB) Viewed 10758 times

[greenamex2]

ECU view -

Gregs first turnover

Screenshot 2020-12-12 145635.png (1.2 MiB) Viewed 10756 times

[Stephen Dean]

The Pullups should be on for Hall Effect sensors.

[AlanB]

Also, the Hysteresis for ref and sync should be a fixed value for hall effect sensors. I would suggest 1V.

[greenamex2]

Thanks all, that is lunch times task.

Is the fact that the speed trace is "inverted" an issue?

I have ordered a sensor to match the reference one but just interested (especially if I need to use a wheel speed sensor in an emergency!).

[AlanB]

Both ref and sync traces look fine.

[greenamex2]

Thanks

[greenamex2]

OK, think I am nearly there.

Fitted a ZF GS1001 sensor to the crank and enabled the pull up and am now getting an RPM!!!

The only odd things are -

The peak voltage on the ZF GS1001 is only 3.9V...is this normal?

For info I tried to enable the pull on the Sync sensor and instead of having a 0-5.5V square wave I then had a 3-5.5V square wave. Weird. I disabled the pull up.

Just need to confirm where the missing teeth are in relation to TDC now!

i2 trace

Screenshot 2020-12-16 212741.png (247.95 KiB) Viewed 10639 times

Pin trace

Screenshot 2020-12-16 202807.png (337.01 KiB) Viewed 10639 times

[Stephen Dean]

Hi,

It's fairly typical that a 5V+ fed Hall Effect sensor will output a 0~4V square wave signal.

[greenamex2]

Thanks Stephen

Done a compression test, all good. Now on to the missing tooth position, DBW config, TPS adapters and about a dozen fuel hoses to make up!