Operation CHARM: Car repair manuals for everyone.

Test K: Straightline Driveline Wind-Up

Pinpoint Test K: Straightline Driveline Wind-Up

Normal Operation
In order for the four wheel drive (4WD) system to function correctly, tires and wheels must be the same size, be in good condition and the front and rear axle ratios must match.

This pinpoint test is intended to diagnose the following:
^ Unmatched tire sizes
^ Unequal amounts of tire wear
^ Unequal tire inflation pressures
^ Unmatched front and rear axle ratios

K1-K3:




K4-K5: