[Diy_efi] WB working need help with LED Display

A6intruder A6intruder at adelphia.net
Wed Sep 18 15:09:09 GMT 2002


Bruce,

Thanks for the feedback, I'll try this tonight.

Daniel R. Nicoson
Equipment Exchange Company
Phone:  (814) 774-0888
Fax:      (814) 774-0880

-----Original Message-----
From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On Behalf
Of bcroe at juno.com
Sent: Monday, September 16, 2002 7:56 PM
To: diy_efi at diy-efi.org
Cc: EECTuner at yahoogroups.com
Subject: [Diy_efi] WB working need help with LED Display

OK, Try this.

The outermost red LED is just a power on indicator.

Connect up the 4 display leads to the WB, no sensor
needed and low battery OK (engine off).  But move the
display pin 10 (VOUT) to the same place the pin 3 (VREF)
is connected, WB J9.  Now you should measure 2.5V from
grd (J12) to J9, no LEDs on.  Check U2 pins 8 and 14,
should also show 2.5V.  U2 pins 7 and 1 should measure
within 0.1V of the same.  U3 and U6 should measure 3.75V
on pins 4 and 8, 5.0V on pins 6 and 7, 8V on pins 3 and 9,
0V on pin 2.

Bruce Roe

On Sat, 14 Sep 2002 23:00:25 -0400 "Daniel R. Nicoson"
<A6intruder at adelphia.net> writes:
> I just finished my installation of my DIY-WB and it seems to work
> according to my data log.
>
> I'm trying to use The LED display from Bruce Roe, I think I must
> have fried something during the soldering process.

> The display lights the outer-most red LED and the first 5 Green LED
> (nearest
> center).
>
> Any thoughts on how to trouble shoot?
>
> Thanks,
>
> Dan Nicoson
> HM:  (814) 868-0003
> WK:  (814) 774-0888
>


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