Quote:
Originally Posted by stryker6040
im no expert but that seems to be right for the pid to read 0 with CC engaged because it prolly only picks up voltage from the sensor when the pedal is pressed so with cc engaged the cc actuator takes hold to operate everything, meanwhile you take your foot of the pedal and that signal at that sensor is now gone. we had to replace a lot of these units when they first switched to the drive by wire setup for the sensor going bad and causing problems, so this could make sense if im right on how it operates, only a guess though
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Except - there are really TWO sensors. There is an Accelerator Position Sensor (AP) AND a Pedal Position Sensor (PP). I think under normal, non-CC conditions, the PP tells the PCM where to place the AP (don't you just love all these initials?).
Now, I can see that if the CC is on, the PP becomes kind of meaningless, and the AP is controled by the PCM based on speed.
However, note that even with the CC on, if you push down on the pedal, it commands the AP to open, and the truck will speed up, so the PCM is still reading PP in some manner.
I'm puzzled that the AP PID reads zero with CC on too.
- Jack