Start the engine of your car. Make sure that the engine oil and coolant levels are optimal; the latter being at 158F. Now, shut down the engine for 10 seconds. Select CASE Learn on your scanner. This is going to prepare the crankshaft position sensor for the learning procedure. The transmission should be in Park. Tweet. #5. 01-27-2019, 09:29 PM. Originally posted by Murray View Post. Failure symptom as per my manual. Without CKP sensor signal input, the ECM does not output the ignition and fuel injection signals. Fuel injectors are firing. I'm afraid it looks like the ECU is fried. Articl Id: 184. The 3X-18X crankshaft position (crank) sensor, on the GM 3.8L V6 engine, can easily be tested (to find out if it's bad or not) with a multimeter. With this article, I'll walk you thru' the entire crankshaft position sensor testing process in a step-by-step manner. In case you're wondering if you can test the crankshaft position The CKP sensor captures the engine's rotation or revolution, as it senses the movement of the sprocket that is coupled to the crankshaft. The sensor sends a signal to the ECU of your vehicle and indicates in real-time and constant, the position of the cylinders. The CKP sensor is located on the block. This sensor goes thru' the block itself (I'll be either using the full name: crankshaft position sensor or the short form: CKP sensor thru' out the article). The crankshaft position sensor is a Magnetic Reluctor type sensor and produces an AC signal that can be measured with a multimeter (in AC Volts mode). D7s1DtD.

what is a ckp sensor