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Author Topic: HELP!!!no reaction of board after AREF mod  (Read 16999 times)

Offline Timmo6

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Re: HELP!!!no reaction of board after AREF mod
« Reply #15 on: February 06, 2008, 04:34:10 pm »
nono.....
I did attach the 5 ground pins (26,5,32,21,22)
but the strange thing is that when the connector is not connected I measure +12v at pin25 and good grounds at the ground pins, but when connected the voltage drops to 1,48v????
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Offline rob@vems.co.uk

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Re: HELP!!!no reaction of board after AREF mod
« Reply #16 on: February 06, 2008, 08:05:07 pm »
So when powered the voltage gets pulled down.

Fault looks to be on the board then

Rob
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Offline Timmo6

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Re: HELP!!!no reaction of board after AREF mod
« Reply #17 on: February 07, 2008, 08:47:54 am »
yeah but when I made the setup on the bench without the wiring in the car the board was OK and measured +5v at the output???
I will check this afternoon again in the car with only the ground pins and the +12v connected.
Tim
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Offline Timmo6

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Re: HELP!!!no reaction of board after AREF mod
« Reply #18 on: February 07, 2008, 02:28:28 pm »
PROBLEM SOLVED ;D

The +12v feed from the main relay in the car lost some voltage when connected to vems.
This is the wire that is used as the +12v feed for the original ecu. This is very strange.
I changed this wire for another +12v feed when ignition is on and everything is OK now.

Thank you very much for the quick and acurate help Rob! ;)
Tim
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