Pinpoint Test AA: Electronic Shift-On-The-Fly (ESOF) Functional Test
Four Wheel Drive (4WD) Systems - Electronic Shift
Pinpoint Test AA: Electronic Shift-On-The-Fly (ESOF) Functional Test
Normal Operation
When operating in 4H or 4L mode, the transfer case and both Integrated Wheel Ends (IWEs) are locked. When in 4L mode, the transfer case low range gear set provides an additional 2.64 gear reduction. When operating in 2H mode, the transfer case and both IWEs are unlocked.
This pinpoint test is intended to diagnose the following:
- Transfer case and related components
- IWE and related components
- Wheel/tire assemblies
PINPOINT TEST AA: ELECTRONIC SHIFT-ON-THE-FLY (ESOF) FUNCTIONAL TEST
WARNING: When directed to drive the vehicle as part of this test, drive the vehicle on a hard surface in an area without traffic to prevent a crash. Failure to follow these instructions may result in personal injury.
NOTE: 4X4 high/low (4H/4L) is not intended for driving on hard/dry surfaces.
