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Q: when I shift into 4wd nothing happens and the 4wd light on the dash doesn't come on 2006 Lincoln Mark LT

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
on. What could be wrong with it?
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You need to have the PCM scanned with a full enhanced scanner. You will not be able to retrieve these codes with a generic OBD2 code reader.

Customer Concern: The Four Wheel Drive (4WD) is inoperative, Retrieved code P1867 from the Powertrain Control Module (PCM).

Tests/Procedures: 1. Ford has had trouble with some 4WD shift motors when built between 4/1/2005 thru 4/6/2006.

2. Verify the 4X4 system is in 2H (2 wheel drive) position, then disconnect the transfer case shift motor connector (C350) and check resistance between Pins 1, 5, 9, 13, and signal return (Pin 10) on the shift motor assembly.

3. Pins 5, 9, and 13 should show continuity to Pin 10 (less than 5 ohms), and Pin 1 to Pin 10 should show as an open (greater than 10,000 ohms).

4. If any of the resistance readings are incorrect, replace the current transfer case shift motor.
5L3Z-7G360-A Transfer Case Motor
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