Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHRYSLER2003300M V6-3.5L VIN MREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCAMSHAFT POSITION SENSORDESCRIPTION AND OPERATION
2003 Chrysler 300M V6-3.5L VIN M
Camshaft Position Sensor: Description and Operation
2003 Chrysler 300M V6-3.5L VIN MSECTION Description and Operation
Description
Camshaft Position Sensor - 2.7L:
Camshaft Position Sensor - 3.5L:
The camshaft position sensor is mounted in the front of the head on 2.7L (Camshaft Position Sensor - 2.7L) or belt cover on the 3.5L (Camshaft Position Sensor - 3.5L). It is a hall effect device.
Operation
CMP 2.7L:
CMP 3.5L:
The camshaft position sensor contains a hall effect device that provide cylinder identification to the Powertrain Control Module (PCM) (CMP 2.7L) or (CMP 3.5L). The sensor generates pulses as groups of notches on the camshaft sprocket pass underneath it. The PCM keeps track of crankshaft rotation and identifies each cylinder by the pulses generated by the notches on the camshaft sprocket.
When metal aligns with the sensor, voltage goes low (less than 0.3 volts). When a notch aligns with the sensor, voltage spikes high (5.0 volts). As a group of notches pass under the sensor, the voltage switches from low (metal) to high (notch) then back to low. The number of notches determine the amount of pulses. If available, an oscilloscope or DRBIII PEP Module can display the square wave patterns of each timing event.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.