Circuit Description

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

The intake camshaft position (CMP) sensor produces a 1X signal for each revolution of the intake camshaft. This signal is used for startability. If the powertrain control module (PCM) does not receive a crankshaft position (CKP) sensor signal, the engine should still start based on the information from the CAM sensors. The CMP is connected directly to the PCM and consists of the following circuits:

The 12-volt reference circuit
The low reference circuit
The CMP sensor signal circuit

If the PCM receives an incorrect number of CMP sensor pulses in a given number of CKP sensor pulses, DTC P0341 will set.

The PCM runs two tests to diagnose the CMP sensor performance system. It uses a Near Engine Start, CMP Fast Event Based, test and an After Engine Start, CMP Slow Event Based, test. The Near Engine Start, CMP Fast Event Based, test runs first upon or during start-up. If the test fails, it will set DTC P0341. If the test passes, it will initiate the After Engine Start, CMP Slow Event Based, test and runs this test continuously unless it detects an error and sets DTC P0341.