Edwin H. Hall was an American physicist, who in 1879 discovered that he could accurately change and measure voltage on a conductor by passing it through a perpendicular magnetic field. Today his "Hall effect" magnetic sensing is used in your Wrangler's camshaft position sensor and crankshaft position sensor to precisely control engine timing. However, several Wrangler Technical Service Bulletins
have been released for camshaft position sensors that cause long engine start cranking times and continued cranking for several seconds after the key is released. Also, when the camshaft position sensor goes bad, it will throw code P0340: "Camshaft position signal is not detected by the Power Control Module (PCM)." Materials Needed Before beginning, disconnect the negative (black) battery cable. Also, always work when the engine is cold.
Figure 1. Disconnect negative battery cable. Figure 2. Camshaft position sensor familiarization. Figure 3. Camshaft position sensor
location.
Figure 4. Camshaft position sensor removal.
Figure 5. Engine cover removal. Figure 6. Camshaft position sensor familiarization. Figure 7. Camshaft position sensor location.
Figure 8. Camshaft position sensor removal. Where is the camshaft sensor located on a 2013 Jeep Wrangler?The camshaft position sensors are located at the rear of the cylinder head covers and are bolted to the cylinder head.. Disconnect and isolate the negative battery cable.. Remove the engine cover.. Disconnect the electrical connector (1) from the CMP sensor.. Loosen the sensor mounting bolt (2).. Where is the camshaft sensor on a 2013?The sensors are located on the front side of the cylinder head on each side of the head. They are under the intake cover and fuel pump cover on the engine.
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