Cheers
OBC Immobiliser
Moderator: martauto
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Widge
- E30 Zone Addict
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- Joined: Tue Jan 11, 2005 11:00 pm
- Location: Leeds
OK so I know how the OBC immobiliser works, (and it was factory fitted so it does work) But when I enter the wrong code a couple of times there is just a relay clicking noise from under the dash. Sould a horn be sounding? and if so which one?
Cheers
Cheers
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cros
- E30 Zone Regular
- Posts: 263
- Joined: Sun Jan 09, 2005 11:00 pm
The OBC has it's own horn for when you get the wrong code.
It's behind a metal plate up above the left brake duct (underside of where the ABS pump is).
It's run off a switched ground from the OBC relay box (brown/yellow through the bulkhead) and gets a permanent 12v via red/black or red/white from fuse 27.
Should be enough to debug & fix! HTH.
It's behind a metal plate up above the left brake duct (underside of where the ABS pump is).
It's run off a switched ground from the OBC relay box (brown/yellow through the bulkhead) and gets a permanent 12v via red/black or red/white from fuse 27.
Should be enough to debug & fix! HTH.
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Widge
- E30 Zone Addict
- Posts: 3661
- Joined: Tue Jan 11, 2005 11:00 pm
- Location: Leeds
Cheers mate 
I should think the horn or the wire is just buggered from not being used
I should think the horn or the wire is just buggered from not being used
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acc
- E30 Zone Newbie
- Posts: 3
- Joined: Wed Apr 20, 2005 11:00 pm
CAN YOU HELP DIFFERENT ISSUE I HAVE TWO WIRES BROWN AND BLUE FOR TEMPERATURE ON BMW 325I SPOERT 1991 H -THE TEMPERATURE SENSOR WIRES ARE BLUE THERE ARE 2 IS THIS CORRECT
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cros
- E30 Zone Regular
- Posts: 263
- Joined: Sun Jan 09, 2005 11:00 pm
The temperature sensor is just a resistor: polarity isn't important.
If you're sure you have the correct wires on the OBC side (displayed temp goes from freezing to boiling when the two wires are shorted), just connect them any way you like to the sensor.
If you're sure you have the correct wires on the OBC side (displayed temp goes from freezing to boiling when the two wires are shorted), just connect them any way you like to the sensor.