Exhaust Valves, Closing Angle (Ca)

The parameter corresponds to the "Camshaft shift angle" but is calculated from another reference position on the crankshaft.

Measurement range between -256 CA and +256 CA.

The engine control module (ECM) calculates the value using the signals from the engine speed (RPM) sensor (crankshaft position) and the camshaft position (CMP) sensor (camshaft position).

The value indicates when the exhaust valves close relative to top dead center (TDC) for the cylinders. The value decreases with increased control of the camshaft.

When the camshaft is in its 0-position (camshaft not deployed), the angle is 26.5 °CA. When the camshaft is fully deployed, the angle is -3.5 °CA.

(CA=Crank Angle).

HINT: The value must follow the parameter "Exhaust valves, target value closing angle".