Troubleshooting and testing the Camshaft Position Sensor and Diagnostic Trouble Code (DTC): P0341 CMP Sensor Circuit Performance, ( or DTC 17 if OBD I equipped) is one of the easiest tests on the planet! All you need is a Multimeter and this article will take you step by step thru’ the whole process. Although a Scan Tool is a great tool to have (and you should have one), it’s not needed for the test in this article.
The test that I’m going to show you is a dynamic test done by hand cranking the engine. The Camshaft Position Sensor can not be tested by doing a simple Resistance test in Ohm’s mode on your Multimeter. The only way to test it and be sure of the result.. YES, it’s good or NO, it’s bad... is to test it dynamically, and I’ll show you just how to do it.
If you need to know if this Camshaft Position Sensor Test applies to your specific 3.1L or 3.4L GM vehicle, take a look at the ‘Applies To:’ box on the right and scroll with the ‘Next > >’ button to see all of the applications.
The way this article is presented, is that you jump right into the test... but I recommend that you first take a look at the section entitled: How the CMP Sensor Works.
Here are the contents of this article at a quick glance:
You don't need any expensive tools to test the Crank Sensor on your 3.1L or 3.4L V6 Engine.
Tools You’ll Need:
The most obvious symptom of a BAD Cam Position Sensor is the Check Engine Light lit nice and bright and the following Diagnostic Trouble Code stored in the PCM's memory.
Below is a simple list of more specific symptoms that accompany a BAD Crank Sensor:
The most important thing to remember, is that when the Camshaft Position Sensor has failed, your car will still start and run (although it may not run great).
“I bought a perfect second car... a tow truck.”