Crankshaft Position Sensor

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ECM depends upon crankshaft position sensor for RPM signals. ECM uses signals to determine triggering of power transistors and fuel injectors. Faults in CKP sensor or circuit should set a Diagnostic Trouble Code (DTC) PO335 or P1336. For testing procedure, refer to DTC PO335 & P1336 - CRANKSHAFT POSITION (CKP) SENSOR in appropriate TESTS W/CODES article.