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Home >> Ford >> 2008 >> Expedition EL 4WD >> Repair and Diagnosis >> Steering >> Steering Column >> Diagnostic Tests >> Steering Column >> Pinpoint Tests >> Pinpoint Test B: The Tilt Adjustment is Inoperative - Using the Memory Set Switch/Using the Remote Transmitter/Using the Easy Entry/Exit Feature >> Normal Operation
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Normal Operation

To move the power tilt column to position 1, the memory SET switch provides a ground for the driver seat module (DSM) through circuit CPS15 (VT/WH), through the memory SET switch internal resistor and finally through circuit GD133 (BK). The DSM then sends voltage to the power tilt motor through circuits CPP04 (GY) and CPP05 (WH/VT) depending on the current column position. To move the power tilt column to position 2, the memory SET switch provides a ground for the DSM through circuit CPS16 (YE), through the memory SET switch internal resistor and finally through circuit GD133 (BK).

The DSM sends voltage to the power tilt motor through circuits CPP04 (GY) and CPP05 (WH/VT) depending on the current column position. The DSM uses a Hall-effect position sensor, attached to the column motor assembly, to identify the current column position. The DSM sends a reference voltage along circuit LPP08 (BU), through the Hall-effect position sensor and back to the DSM along the signal return circuit, RPP08 (GY/BU).

The power tilt motor and Hall-effect position sensor assembly are not serviceable, if a new assembly is needed then a new steering column must be installed.

This pinpoint test is intended to diagnose the following:

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