• The camshaft position signal source is a magnetic pickup sensor mounted on the left front side of the engine block.
• The sensor reacts to a peg, pressed into the camshaft at the front of the engine.
• The peg will pass the sensor once per camshaft revolution, the sensor will produce a single pulse correspondingly.
• Camshaft speed is derived from the frequency of the CMP sensor signal.
• Diagnostic information on the CMP input signal is obtained by performing accuracy checks on signal levels and frequency.
• The ECM needs both the CKP and CMP signal to calculate engine position. The CMP creates a signal that the ECM uses to indicate a particular bank.
• The CMP contains a permanent magnet which creates a magnetic field, when the magnetic field is broken by the
peg on the camshaft a signal in the form of a sine wave is created (converted to a square wave by the ECM).
