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Home >> Cadillac >> 2005 >> CTS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 5.7L - Introduction >> Description and Operation >> Fuel System Description >> Starting Mode

Starting Mode

When the PCM detects reference pulses from the crankshaft position (CKP) sensor, the PCM will enable the fuel pump. The fuel pump runs and builds up pressure in the fuel system. The PCM then monitors the MAF, IAT, engine coolant temperature (ECT), and the throttle position (TP) sensor signals in order to determine the required injector pulse width for starting.

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