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b00sted
September 18th, 2017, 02:25 PM
Had been thumbing through the CSP5 manual and started to read up on the switched tune (Grounding C2-38 to activate the tune). The idea was to use it as a "valet" or "anti-theft" tune. But then I came across this . . .

F1041 - "Used to Enable/Disable the PTO (Power Take Off) option. If using the plug C2, pin 38 discrete input to switch tunes then this must be set to disable."

Does this mean that to use the switched tune, manual high-idle can not be used? I currently have C2-22 grounded and use cruise to ramp up idle during the winter.
Master_Chase
September 19th, 2017, 02:10 AM
From the way I understand it yes you'll lose high idle via cruise control.
b00sted
September 19th, 2017, 10:42 AM
That's what I thought too, but wasn't certain. I'm not sure how EFILive repurposes internal circuits and inputs/outputs for different kinds of magic.

I guess the next logical question would be . . . what's going to happen if the switch tune (C2-38) is used and PTO is still enabled?
Master_Chase
September 19th, 2017, 10:50 AM
EFILive probably won't let you compile the tune but if it does one or both options won't work.

Really wish they could have put this on a different pin.
b00sted
September 19th, 2017, 11:10 AM
Really wish they could have put this on a different pin.

Couldn't agree more! Now I need to decide which is more important / useful . . . security of the truck not being stolen or convenience of a quick warm-up on cold mornings. . .
b00sted
September 19th, 2017, 12:27 PM
Another question on the same subject . . . will it hurt anything if both C2-38 and C2-22 grounded?
Master_Chase
September 19th, 2017, 01:55 PM
Sorry but I don't know what C2-22 is for
b00sted
September 19th, 2017, 02:39 PM
Sorry but I don't know what C2-22 is for

(C2-22) is a pin that needs to be grounded for PTO/High Idle to work on manual transmissions.
Master_Chase
September 19th, 2017, 03:24 PM
I thought the pin for high idle was 38 since that's what the 6th tune uses. If their different pins then I'm with you why can't both be enabled? I want the 6th tune while at the same time keeping high idle, my plan was to buy BDs high idle kit once I got annoyed enough at not having it.
GMPX
September 19th, 2017, 05:13 PM
Guys, I am little rusty on this because it was four years ago I walked this path but here goes.
The wiring diagram I have here for these trucks shows C2, 38 to be unused in any application (but is called a PTO input) and high idle via the Cruise Control is a different thing to the PTO input from my understanding.
Pin C2, 22 is the clutch switch for manual transmissions.

With the BD High Idle kit do you know what pins it connected to? And it is different to the Cruise Control activated High Idle?
Master_Chase
September 20th, 2017, 04:41 AM
BD high idle connects to the pedal wiring and crank signal input. Here are the install instructions http://media.dieselops.com/media/installation/(I-00321)%201036620-27%20High%20Idle%20Kit%20GM%20&%20Dodge.pdf

From what I understand it just spoofs the APPS signal to get the engine to idle at X RPMs
easymon
October 6th, 2017, 03:13 PM
It's been awhile since played with my 06. But did play with 6th tune and grounded pin for high idle. It will act like a 6th tune but still uses same base file like other csp5 files then do your adjustment . My original theory was to make a no load high idle instead of 1100 pto loaded. Hope this help.

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