Test F: Electronic Shift On The Fly (ESOF) Functional Test

PINPOINT TEST F: ELECTRONIC SHIFT ON THE FLY (ESOF) FUNCTIONAL TEST
Refer to Vehicle/Diagrams, Four-Wheel Drive System for schematic and connector information.

Normal Operation
When operating in four wheel drive (4WD), the transfer case and both IWEs are locked. When in 4x4 low (4x4 LOW), the transfer case low range gear set provides an additional 2.64 gear reduction. When operating in 2WD, the transfer case and both IWEs are unlocked.

Possible Causes
^ Transfer case and related components
^ Wheel/tire assemblies

F1-F10:

F11-F19: