Elect Ign Distributor Output LOW?

1. grab a multimeter
2. Unplug the Pick-up Sensor (lead from Distributor).
3. On the Pick-up sensor distributor lead, connect one multimeter lead to one pin in the plug and the other multimeter lead to the other pin in the plug
4. Verify Distributor Pick-up Sensor resistance is between 350 to 550 Ohms

This is from an invaluable Mopar ignition testing website
Dave's Place - Chrysler Electronic Ignition System Test