B+ not working???

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

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dylan5084
Posts: 788
Joined: Tue Jun 28, 2011 10:53 am
Location: Oakley, dunfermline

B+ not working???

Post by dylan5084 »

So I think the b+ in my diagnostic port doesn't work... Ive tried jumpering them to start my fuel pump to set the pressure with the fpr with no success.

And I now tried to plug in my a toyobd1 diagnostic box and it's not working either, the common denominator is the b+ port.... How do I test it/ fix it? Either that or I have an obd1 diagnostic tool for sale!

Thanks Dylan.
thomp1983
Posts: 1545
Joined: Sat Oct 01, 2011 1:30 pm
Location: newark, notts

Re: B+ not working???

Post by thomp1983 »

B+ is battery positive get a multimeter and check it for 12v
dylan5084
Posts: 788
Joined: Tue Jun 28, 2011 10:53 am
Location: Oakley, dunfermline

Re: B+ not working???

Post by dylan5084 »

getting nothing
toecutter
Posts: 120
Joined: Sun Jul 29, 2012 10:02 am

Re: B+ not working???

Post by toecutter »

If you have an immobiliser, make sure it's disarmed, caught me out before (it cut power to B+).
thomp1983
Posts: 1545
Joined: Sat Oct 01, 2011 1:30 pm
Location: newark, notts

Re: B+ not working???

Post by thomp1983 »

Also turn the diagnostic port over and measure it from the bottom to check it's not just corroded on top. For your dongle and running pump just run a wire from the thick white ones in fuse box
dylan5084
Posts: 788
Joined: Tue Jun 28, 2011 10:53 am
Location: Oakley, dunfermline

Re: B+ not working???

Post by dylan5084 »

thomp1983 wrote: For your dongle and running pump just run a wire from the thick white ones in fuse box


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