1992 Mercury Grand Marquis Support Question
Find answers below for this question about 1992 Mercury Grand Marquis.Question posted by dmingus74 on February 10th, 2016
Cruse Control
ruse control donsnt work needs ideas and fuse box layout.
Current Answers
Answer #1: Posted by waelsaidani1 on February 11th, 2016 1:47 AM
check the servo deactivation switch. Located on the brake pedal arm under he dash. This will require you to remove the black plastic duct fot shield to expose the under dash area. It only has 4 plastic speed grommets. You will see to switches on this brake arm. The lower one activates the brake lights. The upper one deactivates the cruise control and is a common failure in 1998-2002 Ford mercury Crown Vics and Marquis. Remove the connector(also known as connector c223), and check the continuity of the switch opened or closed. It should change from infinite to a short using a standard voltage meter set to ohms or continuity and pushing the brake pedal.
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