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Title: Pin 22 ground?
Post by: JohnP 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

Title: Re: Pin 22 ground?
Post by: GintsK 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.

Title: Re: Pin 22 ground?
Post by: JohnP 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?

Title: Re: Pin 22 ground?
Post by: GintsK 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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Technical => Wiring & Sensors => Topic started by: JohnP on April 14, 2013, 01:56:24 AM