DTC P0341: Camshaft Position Sensor Circuit Performance: Description
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The Hall Effect Camshaft Position (CMP) sensor produces 3 ON-OFF pulses for each revolution of the camshaft. The CMP output is pulse width encoded. The Engine Control Module (ECM) uses the CMP and Crankshaft Position (CKP) output pulses to determine the engine speed and position. The CMP is connected directly to the ECM by the following circuits:
- 12-volt reference.
- Low reference.
- CMP sensor signal.