Camshaft Position Sensor: Testing and Inspection

CAMSHAFT POSITION SENSOR (CMPS)

INSPECTION

FUNCTION AND OPERATION PRINCIPLE






Camshaft Position Sensor (CMPS) is a hall sensor and detects the camshaft position by using a hall element. It is related with Crankshaft Position Sensor (CKPS) and detects the piston position of each cylinder which the CKPS can't detect. The CMPS are installed on engine head cover and uses a target wheel installed on the camshaft. This sensor has a hall-effect IC which output voltage changes when magnetic field is made on the IC with current flow.

WAVEFORM

Waveform:

CIRCUIT DIAGRAM

Circuit Diagram:

COMPONENT INSPECTION
1. Check signal waveform of CMPS and CKPS using a scantool.

Specification : Refer to "WAVEFORM"