1998 wrote:Does anyone know how it uses the two pinouts? I get confused how it uses HT and OX. Is there two wires coming off the GZE O2 sensor?
The O2 sensor goes to HT, and get earthed at the other side, but for some reason its connect to OX, which is also connected to earth
Anyone know how this wiring diagram works?
Ok,
the diagram does not really make sense to me,
but I know how they work anyway.
The GZE sensor is actyally a 4 wire sensor.
One is heater power,
the other is HT which is the ECU switching the earth of the sensor, this
is how it knows when the heater element is ok or not.
The other two are OX which is the sensor signal
and the other is the sensor earth.
And in reply to your pm,
no you can not use a single wire one as it senses the heater element is not working and logs a fault code and ignores the sensor signal anyway.
matt
Matt