Hi guys need some help here. I had the check engine light come on me driving home last night. I had the P0222 code. So I parked the truck and shut it off. Then I plugged into it and reset that code. Upon starting it immediately jumped to 1500rpms without touching the pedal and would not leave that range. I limped it home as I was really close. I suspected the apps. So I replaced it with an oem one along with the batteries bcuz they were going anyways. Just to rule those out of the equation. Also my alternator failed two days before so it's new and putting out 14.1. Anyways, after installing a new appsand batts, I attempted to perform the calibration procedure for it. I then started the truck with no codes. Thinking the procedure worked I drove it around the block and it gave me the dead pedal and check engine light. The dead pedal occurred 4 times within a 5 mile circle. It would go dead for about 3 seconds then come back to life. The code it generated now is P0121. The other code is not there anymore. I'm suspecting it's still the apps since the initial code is no longer and a new one has generated. After researching I learned that there are many different procedures for calibrating a new apps but none seem to be solid leads. I ran out of daylight and haven't attempted a different one yet. I do currently have my negatives off the batts and am gonna attempt a new calibration procedure in the morning. Any info regarding this topic would be of help.

Edited June 13, 20177 yr by 99RAM3500

There is only ONE procedure for calibrating the apps.

 

INSTALLATION

The APPS is serviced (replaced) as one assembly including the lever, brackets and sensor. The APPS is calibrated to its mounting bracket. The APPS assembly is located at left-front of engine below plastic cable/lever/linkage cover (Cable/Lever/Linkage/Cover).

1. Snap electrical connector into bottom of sensor.
2. Position APPS assembly to engine and install 6 bolts. Tighten bolts to 12 N·m (105 in. lbs.) torque.
3. Connect wiring harness clip (APPS Assembly) at bottom of bracket.
4. If equipped with an automatic transmission, refer to Group 21, Transmission for transmission control cable installation procedures.
5. Install speed control cable into mounting bracket. Be sure pinch tabs (Cables at Throttle Lever) have secured cable.
6. Install throttle cable into mounting bracket. Be sure pinch tabs (Cables at Throttle Lever) have secured cable.
7. Connect throttle cable at lever (snaps on).
8. Connect speed control cable to lever by pushing cable connector rearward onto lever pin while holding lever forward.
9. Install cable cover.
10. Connect both negative battery cables to both batteries.
11. ECM Calibration: Turn key to ON position. Without starting engine, slowly press throttle pedal to floor and then slowly release. This step must be done (one time) to ensure accelerator pedal position sensor calibration has been learned by ECM. If not done, possible DTC's may be set.
12. Use DRB scan tool to erase any DTC's from ECM/PCM.

@jlbayes but if you rotate the apps 1.7453* clockwise you get more WOT      

 

 

 

 

 

 

 

KIDDING, follow the above

 

1 hour ago, Me78569 said:

@jlbayes but if you rotate the apps 1.7453* clockwise you get more WOT      

 

 

 

 

 

 

 

KIDDING, follow the above

 

 

You STOP THAT.

Ok so question then. I researched that you could just pull the apps sensor off the whole unit and bolt it back to the existing unit to avoid the cable mess. I did this. Will it ever calibrate right? 

Edited June 13, 20177 yr by 99RAM3500

If you the oem style APPS which has the oval mounting holes, then you have to calibrate it using these instructions. 

 

http://m.cumminshub.com/service/cummins-apps.html

 

You will need a voltmeter and a paper clip. 

Edited June 13, 20177 yr by Mariocand

Perfect thank you. I did not do that so it's probably my problem. After performing this will I need to do the reset procedure as well. One more question. I do have edge juice with attitude on it with the cts2. Should I uninstall it and go back to factory before performing any of this or does it not matter? 

Edited June 13, 20177 yr by 99RAM3500

Yes you will need to reset pedal. Key on...slowly depress pedal to WOT, tgen release slowly. Key off.

 

Don't think the edge would matter.

So calibrate the sensor to the mount itself, then calibrate to ecm for min and max values? 

Yup. 

Ok guys so quick update. I put the whole apps assembly on. I set my sensor signal voltage to .600v. The spec is .580-.670v. I did the pedal reset procedure for min and max values. No codes what so ever. Now I'm watching my apps via my cts2 and I notice that engine rpm does not change til it reads 4%. I also notice that I'm down about 3 lbs of boost so I'm assuming it's bcuz it's not legitimately at WOT even tho the percentage says 100. Now do I need to back off the stop screw to compensate for this 4% or do I need to perform another pedal reset or what? I'm at a loss here and I'm not willing to give up 3lbs of boost 

If the screen says %100 then you are getting WOT.  I would guess your IVS is kicking off too late causing the ecm to not jump out of idle fueling until %4 throttle.  

 

The 3 psi of boost is unrelated if you are seeing %100 TPS.

Just a stupid thought,  but did you make sure the floor mat wasn't pushed up under where the pedal is when you did reset? I know my floor mat is pretty thick and I have issues with the clutch switch when I am starting if it gets pushed up there....just a thought.

On 6/14/2017 at 5:36 PM, 99RAM3500 said:

Ok guys so quick update. I put the whole apps assembly on. I set my sensor signal voltage to .600v. The spec is .580-.670v. I did the pedal reset procedure for min and max values. No codes what so ever. Now I'm watching my apps via my cts2 and I notice that engine rpm does not change til it reads 4%. I also notice that I'm down about 3 lbs of boost so I'm assuming it's bcuz it's not legitimately at WOT even tho the percentage says 100. Now do I need to back off the stop screw to compensate for this 4% or do I need to perform another pedal reset or what? I'm at a loss here and I'm not willing to give up 3lbs of boost 

 

Which APPS sensor are you using?

 

So many people adjust the APPS sensor wrong or too high creating issues. Before I can advise more II need to know which APPS sensor you are using.