18-08-2018, 09:45 AM
(This post was last modified: 18-08-2018, 09:46 AM by pug306driver.)
Had a reply from Delphi....thanks Delphi.......your much better than crappy bosch..........
Hi Richard
If the magnetic ring is inside the wheel bearing then this is a 2 wire magneto resistive type sensor.
This sensor works by receiving a voltage down 1 wire (normally battery voltage), and modifying the voltage and current back down the other wire.
This modification of voltage is very small (mV) and produces a square wave signal on an oscilloscope.
Because it must receive a voltage to work, disconnecting the sensor may render the supply voltage at 0v (the ECU switches off the power upon open circuit)
The sensor will also not output any signal whilst disconnected.
This can be checked by using an oscilloscope and looking for amperage changes (around 7-14mA change) or voltage change of around 0.1 > 0.2v.
Alternatively a multimeter capable of that level of accuracy.
I hope this helps
Regards
Delphi Technical team
so, will get the scope out and set up and we shall see........
So much for the Haynes Book of Lies !
Hi Richard
If the magnetic ring is inside the wheel bearing then this is a 2 wire magneto resistive type sensor.
This sensor works by receiving a voltage down 1 wire (normally battery voltage), and modifying the voltage and current back down the other wire.
This modification of voltage is very small (mV) and produces a square wave signal on an oscilloscope.
Because it must receive a voltage to work, disconnecting the sensor may render the supply voltage at 0v (the ECU switches off the power upon open circuit)
The sensor will also not output any signal whilst disconnected.
This can be checked by using an oscilloscope and looking for amperage changes (around 7-14mA change) or voltage change of around 0.1 > 0.2v.
Alternatively a multimeter capable of that level of accuracy.
I hope this helps
Regards
Delphi Technical team
so, will get the scope out and set up and we shall see........
So much for the Haynes Book of Lies !