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Author Topic: Pin 22 ground?  (Read 6343 times)

Offline JohnP

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Pin 22 ground?
« on: April 14, 2013, 01:56:24 am »
I always wondered why pin22 shows a  ----- for the ground on the 1 to 36 sheet that comes with the ecu. Should this be connected to the grounds? I have the belief that in some cases it may not be used. If so, why?

  Thanks for not beating on me in advance.. ;D John
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Offline GintsK

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Re: Pin 22 ground?
« Reply #1 on: April 14, 2013, 07:46:22 am »
Because of historical reason: older v3.3 boards that pin was not connected to ground plane. I have just couple such boards from 2007.
IMO if you do not use high current components such as coil control via onboard IGBTs or low-Z injectors that connection is not mandatory.
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Offline JohnP

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Re: Pin 22 ground?
« Reply #2 on: April 16, 2013, 05:26:23 pm »
Its a newer model. Id say 2the years max in age.
I am left to assume connecting this on an older board could cause problems?
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Offline GintsK

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Re: Pin 22 ground?
« Reply #3 on: April 17, 2013, 06:35:37 am »
Quote from: JohnP on April 16, 2013, 05:26:23 pm

I am left to assume connecting this on an older board could cause problems?
Normally no. Pin internally is not connected or connected to ground via jumper wire.

Gints
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