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Home >> Jaguar >> 2007 >> XK8 2D Coupe >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Engine Controls >> Electronic Engine Controls (4.2L, Vehicles Without: Supercharger) >> Electronic Engine Controls - Description & Operation >> Components >> Secondary Air Injection

Secondary Air Injection

The secondary air injection system comprises:

The ECM controls the SAI pump and SAI valve with a PWM signal and on NAS vehicles measures the system pressure via the MAP sensor. Refer to Engine Emission Control article.

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