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The Crankshaft Position (CKP) sensor is a magnetic generator type sensor. The sensor produces an alternating current signal. The CKP sensor sends the A/C signal to the Powertrain Control Module (PCM) in order to indicate the crankshaft RPM and the position. The PCM uses the CKP sensor signal in order to calculate the following: ^ The ignition sequence ^ The fuel injector sequence ^ Fuel injectors pulse width If the PCM does not receive a CKP sensor signal, the engine will not start. CONDITIONS FOR SETTING THE DTC ^ The engine is cranking. ^ The signal from the CKP sensor is missing for 2 seconds. ACTION TAKEN WHEN THE DTC SETS ^ The PCM illuminates the malfunction indicator lamp (MIL). ^ The PCM records the operating conditions at the time of the diagnostic failure. This information is in the Freeze Frame buffer. CONDITIONS FOR CLEARING THE MIL/DTC The MIL turns OFF after three consecutive trips during which the diagnostic runs, and the fault is not present. A History DTC clears after 40 consecutive warm-up cycles without a fault. Use a scan tool clear the DTC. Disconnect the PCM battery feed in order to clear the DTC
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