Ford Focus Service Manual: General Information

Electrical

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Module Configuration - Diagnosis and Testing

Special Tool(s) Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Principles of ...

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Ford Focus Spark Plug Inspection
Inspect the spark plug for a bridged gap. Check for deposit build-up closing the gap between the electrodes. Deposits are caused by oil or carbon fouling. Install a new spark plug. Check for oil fouling. Check for wet, black deposits on the insulator ...