![]() The CMP sensor is connected to the PCM by a 12-volt, low reference, and signal circuit. The PCM also uses this signal to identify the compression stroke of each cylinder, and for sequential fuel injection. ![]() This relationship is used to determine camshaft actuator position and control its phasing at the correct value. ![]() This means the CMP and crankshaft position (CKP) signals are pulse width encoded to enable the PCM to constantly monitor their relationship. Each notch, or feature of the reluctor wheel is of a different size for individual cylinder identification. The CMP sensor provides 6 signal pulses every camshaft revolution. The Camshaft Position (CMP) sensor is triggered by a notched reluctor wheel built into the exhaust camshaft sprocket. The CKP sensor is connected to the Powertrain Control Module (PCM) by a signal circuit and a low reference circuit. The sync pulse is used to synchronize the coil firing sequence with the crankshaft position. The pulse from the 10 degree slot is known as the sync pulse. ![]() The CKP sensor produces seven pulses for each revolution of the crankshaft. The seventh slot is spaced 10 degrees after one of the 60 degree slots. The magnetic field of the sensor is altered by a crankshaft mounted reluctor wheel that has seven machined slots, 6 of which are equally spaced 60 degrees apart. The Crankshaft Position (CKP) sensor is a permanent magnet generator, known as a variable reluctance sensor. Here's the list of vehicles that are affected by this same issue: Models: 2013-2014 Cadillac ATS XTS 2004-2014 Cadillac CTS SRX 2004-2011 Cadillac STS 2005-2009 Buick Allure (Canada Only) 2005-2014 Buick Lacrosse 2008-2014 Buick Enclave 2007-2014 GMC Acadia 2010-2014 Chevrolet Camaro 2008-2014 Chevrolet Equinox 2012-2014 Chevrolet Impala 2008.
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May 2023
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