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Home >> Ford >> 2004 >> Freestar Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Theory & Operation - CNG, Flex-Fuel & Gasoline >> PCM Inputs >> 4x4 Mode Switch
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4x4 Mode Switch

The generic electronic module (GEM) or the 4x4 module (4x4M) provides the PCM with an indication of 4x4L. This input is used to adjust the shift schedule. A 5.0 volt module pull-up indicates 4x4H or 2WD (Fig 1).

Fig 1: Identifying 4X4 Mode Switch - Typical
G03626531Courtesy of FORD MOTOR CO.