Ford Focus Service Manual: Horn

Body Electrical

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Horn - Description and Operation

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM) . The horn system consists of the following components: Horn switch Horn relay (part of the SJB ) ...

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Ford Focus Brake Booster - Description and Operation
The brake booster consists of: brake booster assembly brake booster vacuum hose brake booster vacuum check valve The brake booster is a single-diaphragm type which utilizes engine vacuum to reduce brake pedal effort and travel. The brake booster is divided into separate vacuum and ...