AuthorTopic: whats my plug  (Read 2014 times)

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Offline woody

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whats my plug
« on: March 06, 2009, 06:58:23 »
i had to replace my brake light switch yesterday on y disco 1 (1998)
i removed a piece of black trim from above the pedals to change the switch
and i noticed a plug (or socket) in the panel
what is the plug for as my first thought was its a diagnostic test point
but i didnt think there was any on my model
Never underestimate the power of a sick mind !!!!
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R reg Discovery 300tdi  NAMED: Scooby Doo !

Offline Disco Matt

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Re: whats my plug
« Reply #1 on: March 06, 2009, 13:02:15 »
The later 300TDIs did have "fly by wire" throttles and other electronic gubbins. The puzzling part is that mine (an all-mechanical 1996 model) has that plug too!  :-k
1996 Discovery 300TDI. She's got it where it counts...

Offline stageonesimmo

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Re: whats my plug
« Reply #2 on: March 11, 2009, 10:07:03 »
Its the OBD (On Board Diagnostics) socket and is used to plug into the ABS or EGR, also shorting out various pins on it makes the fault codes flash up at the warning lamp (well, for ABS anyway). You may find it's replaced the ABS diagnostic plug (blue coloured, 3 pin) that gets mentioned loads in ABS fault threads - it explains why after months of searching on mine (also a '96 (XS) 300 TDi), i couldnt find the blue plug to check my fault codes and had to resort to paperclips in various holes in the OBD socket................

I'm sure a search for 'OBD' on here will bring some more stuff up................
Son, life has a habit of kicking you in the ass and i only have vague recollections of when it wasn't kickin mine!

Offline woody

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Re: whats my plug
« Reply #3 on: March 14, 2009, 13:49:31 »
on my disco there is no ABS
and the pump is controlled by a cable?????
whats left to diagnose????
Never underestimate the power of a sick mind !!!!
What would scooby doo!!!!
remember if you camp next to the toilets you get to meet everybody at least once over the weekend
R reg Discovery 300tdi  NAMED: Scooby Doo !

Offline stageonesimmo

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Re: whats my plug
« Reply #4 on: March 14, 2009, 16:24:42 »
The EGR.

Plus, the looms are often common items that are fitted to all vehicles regardelss of spec and then things are just plugged in to bring it to the spec required, makes things easier at assembly.  So even though you may not have much stuff to diagnose plugged into the loom, the OBD connector is there anyway as its a common loom.........
Son, life has a habit of kicking you in the ass and i only have vague recollections of when it wasn't kickin mine!

Offline woody

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Re: whats my plug
« Reply #5 on: March 15, 2009, 20:32:05 »
The EGR.

Plus, the looms are often common items that are fitted to all vehicles regardelss of spec and then things are just plugged in to bring it to the spec required, makes things easier at assembly.  So even though you may not have much stuff to diagnose plugged into the loom, the OBD connector is there anyway as its a common loom.........

cheers for that

EGR is blanked off
Never underestimate the power of a sick mind !!!!
What would scooby doo!!!!
remember if you camp next to the toilets you get to meet everybody at least once over the weekend
R reg Discovery 300tdi  NAMED: Scooby Doo !

 






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