How to Test the Cam Position Sensor on a Dodge Caravan 3.8L

Written by johnathan cronk
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How to Test the Cam Position Sensor on a Dodge Caravan 3.8L
Test your vehicle's cam position sensor with a multimeter. (Digital Multimeter image by TekinT from

The Caravan is a minivan designed and manufactured by Dodge. The 3.8-litre 6-cylinder engine is equipped with a camshaft position sensor. This device helps to maintain the engine's fuel-to-air mixture and improves fuel economy. The camshaft sensor is subject to extreme heat and vibration making it a component that needs to be replaced overtime. If you suspect your camshaft position sensor is failing, you can perform a simple test with a multimeter.

Skill level:

Things you need

  • Multimeter

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  1. 1

    Open the bonnet of the Dodge Caravan and locate the cam position sensor. On a Dodge 3.8L, it's mounted on the transmission bell housing next to the EGR solenoid. The sensor can be identified as a cylindrical metal component. If needed, a diagram can be found in your repair manual.

  2. 2

    Disconnect the electrical harness from the end of the sensor. Turn the multimeter on to the "Ohms" setting.

  3. 3

    Touch the two probes on the multimeter to the two pins inside the electrical socket of the camshaft position sensor. This will measure the resistance. If the resistance is zero, there is a short somewhere within the sensor and it should be replaced. If the resistance is infinite, the sensor is working properly.

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