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Home >> Ford >> 2004 >> Explorer 4.6 W, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Four Wheel Drive Systems) >> Diagnosis And Testing >> Four-Wheel Drive Systems - Electronic Shift >> Pinpoint Tests >> Pinpoint Test F: 4WD System Functional Test >> Notes

Pinpoint Test F: 4WD System Functional Test: Notes

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Normal Operation 

When the vehicle is operating in four-wheel drive high or low, (4H/4L), all four wheels rotate at the same speed. The amount of traction the vehicle can achieve depends on the amount of traction each tire can establish with the road surface. In order for the 4WD system to operate correctly, each wheel/tire assembly must have matching sizes, and the front and rear axle ratios must match.

Possible Causes 

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