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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 273 (Cruise Control System) >> Diagnosis And Testing >> Speed Control >> Pinpoint Tests >> Pinpoint Test B: DTC P1572 or DTC P1703 - Brake On/Off Circuit Failure >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

The speed control deactivator switch interrupts the power signal to the powertrain control module (PCM) through circuit 636 (OG) when the brake pedal is applied firmly. This is a redundant signal to the PCM.

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