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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1059 (Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550)) >> Pinpoint Test AO: Injector Control Pressure Too High >> Introduction >> Signal Function

Signal Function

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The injector control pressure (ICP) is controlled by the injection pressure regulator (IPR). The powertrain control module (PCM) uses many input variables to determine the desired control pressure.

Battery voltage is supplied to the IPR when the ignition switch is in the ON position. The valve position is controlled by switching the output signal circuit to ground. The ON/OFF time is modulated from 0% to 65%, depending upon the desired control pressure.

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