9000 CDE V6-2962cc 3.0L DOHC (B308) (1995)
Camshaft Position Sensor: Description and Operation
The camshaft sensor is mounted adjacent to the front exhaust camshaft sprocket. It is of Hall-effect type and supplied with power from the main relay
and grounded at grounding point G7S.
The exhaust camshaft sprocket has a hub with a pimple which passes the Hall-effect sensor once per camshaft revolution. The sensor output is connected
to pin 8 of the control module.
The control module applies 5 V to the lead. When the large hole in the crankshaft position sensor's perforated disc passes the sensor and piston No. 1 is
on its compression stroke, the camshaft sprocket's pimple will pass the camshaft position sensor and the lead connected to pin 8 of the control module
will be grounded by the Hall-effect sensor.
The sensor is also known as a phase sensor because it indicates which of the pistons having the same crankshaft order is on its compression stroke. A
phase sensor is essential for sequential fuel injection and knock control.
Should the sensor fail to work or in the event of a break in the circuit (no continuity), the ignition will be retarded 12° in the event of a load on the engine
which would entail a risk of knocking.
The MIL (CHECK ENGINE) lamp will light up.