3rd gen PTO - High Idle?? ever done??

[Tomeygun]

3rd gen PTO - High Idle?? NEW info

I found this while playing on my dealer site:



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OPERATION

The input is used only to tell the PCM (or ECM-Diesel) that the PTO has been engaged. The PCM (or ECM) will disable (temporarily shut down) certain OBD II diagnostic trouble codes when the PTO is engaged.



JTEC and NGC Engine Controllers: When the aftermarket PTO switch has been engaged, a 12V + signal is sent through circuit G113 to PCM pin A13. The PCM will then sense and determine that the PTO has been activated.



CM 845 or CM 848 Diesel Engine Controllers: When the aftermarket PTO switch has been engaged, a 12V + signal is sent through circuit G113 to ECM pin B38. The ECM will then sense and determine that the PTO has been activated.

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Did anyone try this???

 

[rbattelle]

Well that explains what the PTO circuit means on my OBD-II monitor. Too bad Dodge doesn't bother to try marketing any PTO accessories.



-Ryan

 

[Tomeygun]

Where the Heck is "ECM pin B38" ??

 

[bpenrod]

on the side of the motor, I think B is the back (rear) connector, had to hook my pac brake up to pin 39!

 

[rbattelle]

Where the Heck is "ECM pin B38" ??

Check my readers rigs. I put pics of the 2 ECM connectors for just an instance like this...



-Ryan

 

[Tomeygun]

Check my readers rigs. I put pics of the 2 ECM connectors for just an instance like this...



-Ryan

So the 50-pin out is the Rear one, right?



So now I just have to take that bad boy off and check it out, Neither pinouts show the #38 in use, soo... ???

 

[Tomeygun]

Pretty much says it all



Now to try it... . Ground the B38 lead -

And just so I dont feel dumb when it fails, Has this been try already?

 

[Gypsyman]

Ok, so it may disable certain OBD II diagnostic trouble codes when the PTO is engaged but what else would it accomplish? I too would love to find a way to enable high idle on a 6 speed but this doesn't appear to do that. What are your thoughts Tom?



Richard

 

[Subby]

I'm all ears!

 

[Tomeygun]

Ok, so it may disable certain OBD II diagnostic trouble codes when the PTO is engaged but what else would it accomplish? I too would love to find a way to enable high idle on a 6 speed but this doesn't appear to do that. What are your thoughts Tom?



Richard

I guess I kinda thought it would idle up the RPMs too. Not just diable the OBDII codes - THough you are right, It does not mention one word about RPM, etc



Hmmmm... only one way to know

 

[Gypsyman]

On the outside chance it works I'd be the first one in line trying to find a supplier for ECM pins. Maybe I could hook it up, throw the switch and block the codes from my TST. :-laf



Let us know what you find out.



Richard

 

[TCDiesel]

I have PTO & high idle ramp ,I hard wired around the ECM For My EB Also ,I don"t don"t like DC dampering when it comes to commercial use,It cost about $350. 00 ,We use it all the time to power up lifts & dumpers.

 

[Moose]

I was just wondering if anyone auctually tried doing this and if so what the results were



Moose

 

[Tomeygun]

I was just wondering if anyone auctually tried doing this and if so what the results were



Moose

I never have got around to it...



Though its still on the list of "to do's"

 

[rbattelle]

Someone's got to try this. I've been drooling over PTOs lately.



TWest, can you give us some more details about which PTO you're running and which hydraulic pump you're running on it?



On edit: why does the text in Tomey's first post indicate +12v is supposed to be applied to the PTO pin, but the schematic clearly indicates it must be grounded?



-Ryan

 

[Tomeygun]

Someone's got to try this. I've been drooling over PTOs lately.



TWest, can you give us some more details about which PTO you're running and which hydraulic pump you're running on it?



On edit: why does the text in Tomey's first post indicate +12v is supposed to be applied to the PTO pin, but the schematic clearly indicates it must be grounded?



-Ryan

I thought it had +5v all the time and when it hit +12v, that would engage the PTO - Ah heck, I'll pull the books again



EDIT: Opps, thinking 2nd gen

It's too late to think... Wotk on it tomorrow

 

[TCDiesel]

Someone's got to try this. I've been drooling over PTOs lately.



TWest, can you give us some more details about which PTO you're running and which hydraulic pump you're running on it?



On edit: why does the text in Tomey's first post indicate +12v is supposed to be applied to the PTO pin, but the schematic clearly indicates it must be grounded?



-Ryan

The Pumps are electric,and are mounted on the equipment, we just Plug in and when the demand calls for it the engine will increase RPMs according. The first prototype we burn down the entire truck (1993). I did not have the truck body grounded correctly and the power found the ground cables inside the cab, they got hot and snap and fell on the wires under the dash, the entire cab burn up in less than five minutes. The PTO & Ramp are remote controlled so you can start and stop at will. The equipment does not need batteries all run of the truck,We use Penntex Generators. The Batteries are Problematic,either they are dead or are stolen none the less they are PITA, That why we use the system we have now

 

[rbattelle]

The Pumps are electric,and are mounted on the equipment, we just Plug in and when the demand calls for it the engine will increase RPMs according. The first prototype we burn down the entire truck (1993). I did not have the truck body grounded correctly and the power found the ground cables inside the cab, they got hot and snap and fell on the wires under the dash, the entire cab burn up in less than five minutes. The PTO & Ramp are remote controlled so you can start and stop at will. The equipment does not need batteries all run of the truck,We use Penntex Generators. The Batteries are Problematic,either they are dead or are stolen none the less they are PITA, That why we use the system we have now

So you're not referring to a Dodge.



-Ryan

 

[TCDiesel]

So you're not referring to a Dodge.



-Ryan

No, I have it my 2003s. I own Two businesses, One T&C the Other is a construction company.

 

[nickleinonen]

i think there is something more needed to make the pto work. . on the IS controlled cummins engines at school with the pto enabled, there was 2 switches to make it work. one was a on/off switch that activated the pto function, the other was a momentary on/off/on switch that allowed you to control the engine speed for the pto. . so with that in mind, there is a minimum of 2 pins on the ecm needed, but most likely 3 pins are needed [on/off, up speed, down speed]. the dodge wiring schematics don't go into any detail on how the ecm needs to see the function