Quote Originally Posted by TrialByFire View Post
What if an Eaton eLocker is compatible with the SA? QDII would be fully compatible, no? My read of the manual suggests that the computer outputs a 0 - 5V analog signal to control the power transfer ratio bewtween th L & R. With the ABS sensors you should be good to go.
There's a few issues with trying to run an eLocker with QDII controls:

1) The eLocker solenoid would have to be the same specs or the FDCM will throw codes. It's possible that the solenoid is close enough.. but it would have to be looked into.

2) It looks like the FDCM controls the QDII with voltage pulses, not steady voltage (but not PWM either). Not sure exactly why they do this, but its what I gathered by reading the solenoid troubleshooting steps in the FSM. Pulsing voltage to the QDII solenoid might be OK for how the ergodisc functions since the solenoid basically varies a valve for variable torque control... but this may be an issue with the elocker since it'll be on/off/on/off/on/off etc.

3) The QDII ergodisc provides "variable" torque, UP to full lock. Remember that this system allows some slippage as its being activated (probably why its a pulsing signal and not constant voltage... maybe the pulses get closer together for full lock..). So when you lose traction and the FDCM sends a pulse to the diff, no big deal if you're on pavement since it just acts like an LS rear. But have an elocker in there and lose traction for a second and you're gonna go to instant full lock on the street which is not a good thing.

4) I'm not sure if the elocker is designed to be activated with the drivetrain in action. Seems like a lot of potential wear/tear using it in a QDII application. Normally lockers are engaged before entering an obstacle, not in the process of losing traction.

5) (more so an opinion here) I'd want to be able to control my e-lockers offroad.