Unused PCM pins
Unused PCM pins I'd like to connect both my fuel pressure and my windband 5v outputs to my PCM for monitoring. I know I can use the EGR for the FP, but I'm wondering if the "Not Used" pins are truely unuseable or if one or more of them can be used as a 5v input. Anyone know?
I have EFILive. The fuel pressure monitor is easy if I eliminate the EGR. The FJO WB should be similar if I can find a pin to use.
Using the EGR is easy because the pcm is already setup to use that pin with a certain pid. You can't just pick a pin without a wire going to it and start using it however you want. It has to be enabled and setup in the pcm first. The only way to hook the WB in would be to disable another sensor you weren't using. Maybe the a/c pressure sensor if your not using a/c...
The way I figure it, the PCM may be a more or less a generic unit that may have unused pins for my vehicle that I can use for the WB02 5v aux out. This way I can monitor both the FP and WB directly from the PCM via my EFI software.
Not powering the WB from the PCM, the FJO has a aux out for an external guage. I use the WB02 to disable my nitrous in lean conditions. The only purpose of connecting it to the PCM is to make monitoring with the EFILive easy. I can connect it directly to the EFI unit, but I'd prefer to use the PCM if possible.
The way I figure it, the PCM may be a more or less a generic unit that may have unused pins for my vehicle that I can use for the WB02 5v aux out. This way I can monitor both the FP and WB directly from the PCM via my EFI software.
The way I figure it, the PCM may be a more or less a generic unit that may have unused pins for my vehicle that I can use for the WB02 5v aux out. This way I can monitor both the FP and WB directly from the PCM via my EFI software.
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You're right, there are some pins that are unused in your application. The problem is they aren't enabled in your operating system. It isn't as easy as just enabling them. Therefore you have to find another sensor that is already enabled and wire it to your WB instead of the sensor it was intended for (just like the egr).
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ya, my car is a 2000 so I have an EGR. If i use it for my FP, I hope I don't get dinged when I get the car inspected. I figure it's easy enough to remove the hardware. If the visual inspection fails me, i'll just "re-install" it 
. I just wont hook it up.
. I just wont hook it up. 