Circuit Description

WARNING: This page is about a different variant/trim than selected.

The intake camshaft position (CMP) sensor is a hall integrated circuit (IC) type sensor that works in conjunction with an 8-tooth reluctor wheel used to determine the position of the intake camshaft. The engine control module (ECM) supplies a 12-volt pull up voltage on the CMP sensor signal circuit. As the teeth on the reluctor wheel passes the CMP sensor, it sends a digital signal which is an image of the reluctor wheel to the ECM. The ECM processes this information to determine the exact position of the camshafts, and to determine the optimum ignition and injection points of the engine. The CMP sensor wiring consists of a 12-volt reference circuit, a low reference circuit, and a signal circuit. If the ECM cannot see a change in the intake CMP sensor signal, DTC P0340 or P0345 will set.