High Idle 6-speed jumper question

[machinemover]

I posted this request the other day on another thread but it may have gotten lost in the sauce. I understand there is a computer by-pass for the 6 speeds to use the high idle option. I bought a computer pin jumper from Cummins the other day, I just need to know what pin you ground on the ecm. Any help?

 

[Doughboy21kd]

If your looking at the 2 big plugs down by the motor... Take a allen head wrench and loosen the allen head from the second plug(closest to the firewall) and pull the plug..... Now if your looking at the backside of the plug(the wire side where the wires go in) its the 3rd row down which would be the middle row and its the 2nd one in from the end towards the front of the truck..... Push the dummy pin out with a paper clip is what i found works best... then push new pin in and ground it to the bolt around in that area... . Let me know if that helped



Here is a pic you will see the yellow wire inside the cirle on the second plug... thats where you need to be... .

 

[Doughboy21kd]

Here's a little better instructions i have dug up elsewhere... .



So not to confuse the Dealer when he tries to enable the High Idle in the ECM, it's best if you've electro-mechanically "enabled" it first with either Step-1 or Steps-2 thru 3;



1) Buy the $200 clutch-switch kit and install as instructed. - Pass Go - straight to Step 4…



2) Install a "dummy" clutch-switch by shorting the ECM connector-B Pin #22 to ground as follows: (Note this probably circumvents someone's concept of safe power-train operation as depressing the clutch with this method will not disengage the high-idle "cruise" setting)



2a) Buy a new ECM connector pin (I bought the Cummins Pigtail part number #3164263 for ~$10. 00+tax at a local Kenworth dealer) or use an old junk yard harness to salvage a single pin with a ~6"-7" lead.



2b) If you bought the pigtail #3164263, the lead will be too short, so pick up some 18AWG to extend the lead length. The pigtail already comes with a crimp connector and a heat shrink insulator ready for the extension-lead.



- Crimp the ~5" 18AWG extension-lead into the pigtail and hit the heat-shrink sleeve with a heat-gun (or a lighter!!) Please check your own extension-lead lengths before crimping - this ~5" is from my lousy memory !!



- Add a 1/4" ring terminal to the end of the extension lead (this'll connect to a ground post) - I bought the ones with a semi-clear blue "plastic" sleeve, the sleeve is actually a weather-proof heat shrink. Hit the heat-shrink sleeve with some heat.



3) Remove plug B on the ECM (the 50 pin connector on the drivers side of the engine closest to the rear of engine with a 4mm Allen screw in the center). Note: this is probably best done with the both batteries disconnected first (I did mine with the batteries connected - sloppy).



3a) Push (use a paper clip) the sealing plug out of position #22 (starting at to left, count across, there are 50 pins total, #22 is second in from left, third row down) Note: #22 is the PTO/Clutch switch sense terminal (page 8W 80-98 in the shop manual).



3b) Insert the pigtail-lead into the back of the #22 until you feel a positive detent (click), lightly tug the wire to ensure that it's been properly inserted and cannot be removed. Note: Make sure that you've properly identified #22 - if you've put it into the wrong position, you'll probably need to head over to the dealer to use a special pin removal tool...



3c) Reconnect the ECM connector, don't bother trying to push it on, just seat it square on the ECM connector, and carefully thread the 4mm Allen screw until it bottoms out.



3d) Slide the ring-terminal over the lower-left post of the ECM retaining stud (mine stud had an extra ~1" of available thread)



3e) Add a 1/4-28 fine-grade nut to secure the ring-terminal to the ECM retaining stud, torque to... - oh hell - just tighten it !!!



3f) Reconnect the batteries if disconnected.



4) Take the truck to the dealer to enable the High Idle option. On older models, I think it's an actual TSB (18-004-04) to flash/load the ECM - my '06 just needed it to be enabled.



- If your tech can't figure out what/where a high-idle is (mine didn't know) tell him to follow these menu options (I think these are from the DRBIII and not the Star tool which they used on my '06)

- With the ignition in the “RUN” position, using the DRBIIIT select:

-> DRBIII Standalone

-> xxxx - xxxx Diagnostics

-> All (Except Below)

-> Engine

-> Misc. Function

-> Idle Up Feature Enable (the option is in the same place as the daylight running lights)



- Ensure that the after the flash option has been loaded to the ECM (TSB 18-004-04) that it also activated - this is a additional step !! Again - note that on my newer '06 they just had to enable it - not flash it as a TSB !!



5) If your tech knows his ABC's - he will know how to verify if the high-idle has been properly loaded/enabled - if not, here's how the high idle on my 6spd worked:



- Start truck.

- Stay off the clutch (if clutch switch was installed) and service brake pedals (recommend setting the parking brake on your 6 speed !!).

- Turn on "cruise".

- Hit "set".

- The engine should come up to 1,100 rpm.

- Then hit or hold accel;

- Each time you hit accel momentarily it should go up 100 rpm (Max is 1,500 rpm).

- Each time you hit decel momentarily it should go down 100 rpm (Min is 1,100 rpm).

- Hit the service brake pedal, the RPM's should drop back down to the normal ~750.

- Hit the "set" button, it should run back up to 1100 rpm.

- Hit "cruise" to turn off cruise and the RPM's should drop back down to the normal ~750.



6) If you have any follow on TSB's that flash the ECM, remind the service manager (or better yet the tech) to ensure that high-idle is to be re-enabled following the TSB flash. Mine was disabled after applying the 18-003-06 hard-start TSB last week.



7) Smugly recall the fella who posted his stout-lumber stick "High Idle Management Interface" picture next time you're at a long light out in the flatlands and hit your "Cruise, Set" buttons... Don't roll into the intersection !!



Good luck, hope this helps.

 

[machinemover]

Thank you very much, I will do this , this afternoon if I have time. I'm going on the road tomorrow so I kind of need this option. Thanks again!

 

[JasonCzerak]

when one says "older" does that include 04. 5's? I recalled this "work around" is on 05's only. true? false?

 

[RobertP]

very sweet write up. i have had the #22 pin grounded now for about a year and have not clutch switch and just absolutly love the high idle feature.

 

[machinemover]

well, I hooked up the jumper and tomorrow morning I will head to the dealer to get it enabled. Again thanks guys, love your knowledge!

 

[Doughboy21kd]

You could enable it yourself if you knew someone with a SMARTY...

 

[Bob V]

Doughboy21kid, good write up! You can get the red sealing plug out without removing the conector. Just use a small neddle nose or tweesers.

 

[Doughboy21kd]

I would love to take the credit for that write up, but i just did a copy and paste..... But i have had it saved on my computer for 6+ months cause i used it when i did mine..... I just thought i would share it with those that are looking for easy instructions for doing high idle... ...

 

[6speed]

I have an 04 6sp, will it work?

 

[cerberusiam]

when one says "older" does that include 04. 5's? I recalled this "work around" is on 05's only. true? false?

This will work on 04+ trucks, and supposely, late 03's with the correct flash.

 

[machinemover]

Thanks Doughboy21kid, I stopped by the dealer this morning, he set the code and it works well. BTW he did it for free, what a guy! Only complaint I have is the cost of the jumper from freightliner was $11. 16. Thought that was excessive for a jumper wire. But, what the hell, got splerge, once in awhile, the el cheapo that I am... . High idle works well... . real cool feature.