Camshaft Position (CMP) Sensor
WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
In the following test, an analog type voltmeter must be used. Use a small piece of wire (paper clip) to access distributor connector terminals while connector is plugged in.
- CMP sensor (also known as Hall Effect switch) is located in distributor. Using a ANALOG voltmeter, connect positive voltmeter lead to Tan/Yellow wire at distributor connector. Connect voltmeter negative lead to Black/Light Blue wire at distributor connector.
- Crank engine. If voltmeter needle fluctuates between zero and 5 volts, CMP sensor functioning properly. If voltmeter reads zero volts, go to next step.
- Unplug distributor connector. With ignition on, measure voltage between Black/Light Blue wire and Red wire at distributor connector. If voltmeter indicates about 7 volts, replace CMP sensor. If voltmeter reads zero volts, go to next step.
- Check continuity of Red wire between PCM and distributor connector and Black/Light Blue Wire between distributor harness connector and chassis ground. Repair as necessary. If both wires are okay, Check PCM power and ground circuits. If PCM power and ground circuits are okay, replace PCM.