Page 1247 - Foton Workshop Manual - Tunland (AT)

ENGINE CONTROL SYSTEM - CAMSHAFT POSITION SENSOR 11-21

CAMSHAFT POSITION SENSOR 11

HOW IT WORKS

The camshaft position sensor is mounted on the
overhead mechanism camshaft sprocket housing,
which is a Holzer effect sensor. The engine control
module (ECM) provides a 5V power to the engine
camshaft speed / position sensor through the sensor
power circuit. The ECM also provides a ground to
the sensor circuit. The camshaft speed / position
sensor provides a signal to the ECM via the
camshaft speed / position sensor signal circuit.
When the camshaft speed sensor indicator lobe
turned, the sensor generates a signal and sent it to
ECM. The ECM identifies the signal and converts it
to an engine speed reading, then determines the
engine position. If the main engine crankshaft speed
/ position signal is missing, the sensor will be used
as a backup sensor.

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