EDIS VR sensor
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
EDIS VR sensor
Is there a way of determining the polarity of an EDIS VR sensor? Or is it just a question of trying it both ways? I have a 'scope.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: EDIS VR sensor
Yes, You will have to try it both ways.
Re: EDIS VR sensor
Hi.
There is a pretty simple way that has served me well. You need a DVM set to 200 mV DC or a scope.
Connect the instrument to the VR sensor . Take a piece of soft iron and and let that sit on the sensor end.
Pull the iron off as fast as you can. The instrument shall swing towards a negative voltage , if not reverse the test
leads and repeat. The positive lead of the instrument that shows a negative deflection when pulling the piece of iron off
is now connected to the VR+ polarity as defined in EDIS parlance.
Heribert
There is a pretty simple way that has served me well. You need a DVM set to 200 mV DC or a scope.
Connect the instrument to the VR sensor . Take a piece of soft iron and and let that sit on the sensor end.
Pull the iron off as fast as you can. The instrument shall swing towards a negative voltage , if not reverse the test
leads and repeat. The positive lead of the instrument that shows a negative deflection when pulling the piece of iron off
is now connected to the VR+ polarity as defined in EDIS parlance.
Heribert
If it is not understood , it will not work!
Re: EDIS VR sensor
Just the answer I needed. Thanks, Herbert.Heribert wrote:Hi.
There is a pretty simple way that has served me well. You need a DVM set to 200 mV DC or a scope.
Connect the instrument to the VR sensor . Take a piece of soft iron and and let that sit on the sensor end.
Pull the iron off as fast as you can. The instrument shall swing towards a negative voltage , if not reverse the test
leads and repeat. The positive lead of the instrument that shows a negative deflection when pulling the piece of iron off
is now connected to the VR+ polarity as defined in EDIS parlance.
Heribert
The sensor I'm using is I believe a Ford one, and one of the two terminals is marked 1 - the other no marking. I've seen two two circuits using it - and they are different. ;-)
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: EDIS VR sensor
For a Ford EDIS install you should definitely use a FORD VR sensor. FORD EDIS VRsensors come in many different shapes and use different contacts, but as far as I have managed to suss out, they are all electrically the same.
Heribert
Heribert
If it is not understood , it will not work!
Re: EDIS VR sensor
The one I'm interested in fits a custom made bracket for the Rover V8 - but I've seen conflicting reports on how it's wired. Everyone says just try it both ways, but I'm not like most. ;-)Heribert wrote:For a Ford EDIS install you should definitely use a FORD VR sensor. FORD EDIS VRsensors come in many different shapes and use different contacts, but as far as I have managed to suss out, they are all electrically the same.
Heribert
I tried your test. I have another VR sensor which came with plug and pigtails in the Ford colours - blue and grey - so I had a 'control'. And I'm delighted to say the results were conclusive, so thanks again. This is the sensor I'm talking about:-
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: EDIS VR sensor
hellou, i have also fords vr sensor nad have a question. is there any chance, that i have bad configuration (falling-rising edge) and by ajusting the potentiometrs r52 and r56 ai made it working? there is something in megamanual about these potentiometers, that they shuold be turned counterclockwise, but when i do this my car won't work and i have loss sync all the time... my frind said turn it one time right it should be all ok, but i had tuo turn it abou 6 times to be wright. how can i check if i made a mistake?? my sensor is mounted on the engine, so i can't get it out. it's to much work... shoul i cranc the engine and measure it with the DVM?? after disconnectingfrom the ecu?/ i have MS II pcb v3.0 .