ASD relay question

[PSD0389]

Alright Ive done a lot of searching and cant seem to get a straight answer on this question.. Im using a dodge PCM to control the 47re thats going behind the P pumped 24v I put in my superduty. Im using a 97 PCM and wiring harness to avoid having to do any communication with an ECM like a 24v.

Now I already have all the grounds, hot in run/start, battery + wires and trans relay all wired up, along with the tranny solenoid, P/N switch and OSS. Then the ESS, TPS, CTS and VSS wired up as well to cover the inputs and outputs for the trans.

I dunno how I skipped it but until today when I was looking at my diagrams again I didnt notice the auto shutdown (ASD) relay. So my question is, does this relay do anything with controlling the transmission shifting through the PCM? Ive got some yes and some no answers from what Ive researched. I just want to make sure I know if I need to get this relay power and well when I turn the key on to ensure the trans will function or not.

Any help is appreciated.

Thanks

 

[LReiff]

On ford vehicles the ASD relay only shuts down the electric fuel pump in a roll over or harsh impact. They're usually mounted behind the passenger side kick panel. You could simply bypass it.

 

[PSD0389]

On ford vehicles the ASD relay only shuts down the electric fuel pump in a roll over or harsh impact. They're usually mounted behind the passenger side kick panel. You could simply bypass it.

I appreciate the reply! Sorry I might not have explained it well enough in my first post, I was wondering more about the asd relay for the 97 dodge pcm as far as exactly what its purpose is and if it will affect transmission shifting with the 47re if i dont have it hooked up?

Thanks again!

 

[LReiff]

Maybe this helps! This is for a '97 diesel/auto pcm. As far as I can tell (deductive reasoning) shifting should not be effected if the asd circuit is not used, but that just an opinion.

DESCRIPTION
This circuit controls operation of the Automatic Shut Down (ASD) relay. It provides the necessary power to operate the generator field control for charging system operation.

OPERATION
The ground circuit for the coil in the ASD relay is controlled by the Powertrain Control Module (PCM) . The PCM operates the relay by switching the ground circuit ON and OFF.

CIRCUIT OPERATION
Circuit A16 from fuse 4 in the Power Distribution Center (PDC) supplies battery voltage to the contact side of the Automatic Shut Down (ASD) relay. Circuit A16 is HOT at all times.

When the ignition switch is in the START or RUN position, it connects circuit Al from fuse 3 in the PDC to circuit A21. Circuit A21 powers circuit F18 through fuse 9 in the fuse block. Circuit F18 supplies battery voltage to the coil side of the ASD relay. The Powertrain Control Module (PCM) provides the ground path for the coil side of the relay on circuit K51. Circuit K51 connects to cavity 51 of the PCM connector.

When the PCM provides grounds the ASD relay, the relay contacts close and connect circuit A16 to circuit A1 42. Circuit K125 splices to supply voltage to the fuel injectors, ignition coil, and heated oxygen sensor. Circuit K125 also connects to cavity 57 of the PCM.

 

[PSD0389]

Maybe this helps! This is for a '97 diesel/auto pcm. As far as I can tell (deductive reasoning) shifting should not be effected if the asd circuit is not used, but that just an opinion.

Thank you! that definitely helps and looks like it answers my question. It looks like the relay recieves its hot in start/run signal from the alternator output and the transmission control relay recieves the same signal from the alternator for its hot in run/start.

So from the looks of it if an ASD relay is messing up it will screw up the ignition signal to the trans control relay as well so thats why the trans would act up. So looks like all I have to do is give the trans control relay its own ignition signal and I should be good to go!