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Engine Cranking Signal

While engine is cranking and voltage is applied to the starter an input signal is also delivered to STA terminal of Engine Control Module (ECM). The ECM uses input signal for controlling Pulsed Secondary Air Injection (PAIR) system (if equipped), fuel injection system, ignition timing (spark advance) and idle speed control system.

NOTE: The EGR gas temperature sensor may be referred to as EGR function sensor.