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Home >> Jeep >> 2002 >> Grand Cherokee Overland >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Engine Controls - Theory & Operation) >> Computerized Engine Controls >> Input Devices >> Brake Switch
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Brake Switch

WARNING: This page is about a different car, the 2003 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

When brake switch is pressed, PCM receives an input that the brakes are being applied. After receiving this input, the PCM will control idle speed using the Idle Air Control (IAC) motor. This input is also used to disable vent and vacuum solenoid for speed control servo.

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