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Command-Trac II
Command-Trac II works the same as Command-Trac but uses a console mounted switch to control the MP1522 transfer case as opposed to a floor mounted lever.[1]
Applications:
2008-2012 Jeep Liberty/Cherokee (KK)
Selec-Trac II
Selec-Trac II uses a console mounted switch to control the MP3022 transfer case. The switch controls the 4WD mode with options of 2WD - 4WD Auto - N - 4WD Low. The MP3022 transfer case uses an electronically controlled clutch pack to bias torque from 100% rear to 50/50% front/rear. The transfer case has no center differential, so power can only be supplied to the front axle when the rear wheels begin to slip. In this way, the transfer case works almost identically to the NV247 transfer case used in the Quadra-Trac II system in 1999 to 2004 WJ Jeep Grand Cherokees. In 4WD Low mode, the clutch pack is locked and power flows through a 2.72:1 planetary gear set for higher torque at lower speeds.[3][4]
Applications:
2008-2012 Jeep Liberty/Cherokee (KK)
https://en.m.wikipedia.org/wiki/Jeep...-drive_systems