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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 345 (Four Wheel Drive (4WD) Systems) >> Diagnosis And Testing >> Four Wheel Drive (4WD) Systems - Mechanical Shift >> Pinpoint Tests >> Pinpoint Test F: Manual Shift-On-Stop (MSOS) Functional Test >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

When operating in Four-Wheel Drive (4WD) high (4H) mode, the transfer case locks the front driveline to the rear. When set to the LOCK position, the manual hublocks connect the front axle shafts to the wheel hubs. When in 4WD low (4L) mode, the transfer case low range gear set provides an additional 2.72:1 gear reduction. When operating in 2-Wheel Drive (2WD) high (2H) mode, the transfer case decouples the front driveline from the rear driveline. For improved fuel economy, both manual hublocks should be set to FREE in 2H mode.

This pinpoint test is intended to diagnose the following:

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