I have a mess of throttle cable that interferes with my ability to work on the cp3... so it is not an electronic throttle thingie...

 

Wait a minute.... Are you a dealer Tech???????

 

Well.......used to be, and have a DRB at work now, and also access to Dealerconnect! Comes in kinda handy!

 

vzdude,
Do you have any wires in pin #22 of your ECM???? Just had a thought if they possibly used a manual tranny truck harness on our trucks? Not sure if that is possible or not. Need a schlematic to get ejumicated. Wondering how this is grounded through our auto trannies.

 

Where does the vacuum source come from without a vacuum pump on these trucks that have vacuum operated cruise? My 03 doesn't have a pump or any throttle cables so I take that I it that it has electronic cruise? I have borrowed a Smarty from friend but was unaware of this idel function. The high idel function works fine but I didn't know there was a possibility of controlling rpm with the cruise buttons. I will see if the Smarty allows this function on my 03 asap!

 

Vaccum pump is behind the passenger side battery. Vaccum line runs over the cowl and down under the drivers side battery to the dashpot. You will sometimes hear it run at the first start of the day.

 

The vacuum pump is mounted on the firewall on the passenger side close to the right front fender. Off the top of my head I want to say it is about 1 1/2" wide and about 5 or 6" long and rounded top and bottom. You can't miss the vacuum tubing coming out of the top of it. It looks like nothing you would think a vacuum pump to look like.

your throttle cable (basically) is mounted on the top left front of the engine, just above and a little forward of the cp3 pump.

 

I'm at work now, so can't really check. It's about 10* outside brrrrr! I'll look tonight, but I highly doubt the manual trans wiring. The wiring is a completely different animal on a manual.

 

I agree with you on the wiring. Probably differnent, but the ECM should not matter manual or auto. So if pin #22 must be grounded on a manual then the auto trucks should ground the same wire. It is proably through something else like a park neutral safety switch on the auto. Just some thoughts.

 

Is #22 the PTO switch sense? I can understand that making it work for the pto. It is starting to come together!

 

Pto switch sense is on #22 of the PCM white connector. Not actually on the ECM on the side of the engine. Or am I headed in the wrong direction?

 

I don't know for sure. Will someone post which wire they grounded on the ECM/PCM to make High Idle work with a manual tranny. I need a darn factory manual so I can see what is going on. Going to do a search to see if I can find it again.

 

Here are the instructions with a picture on grounding pin #22.

 

Instructions per Wagonfixin.....

Enabling High-Idle on a 6 Speed...

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53 ****** - I just did the High-Idle on a my new 06' 6spd QC... Not too hard, I've pulled most of the following details from this outstanding forum:


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.

 

I'll give it a try tonight and let you know! On a side note.....no where in the wiring diagram does it have any spec for a wire being in terminal #22 of the ECM Connector #2. I'm gonna check to see if there is anything there first. Whether it be voltage or ground. Hate to fry my ecm for a daggone high idle! LOL