Magnetic Pick-Up Test

With ignition key off, check resistance between pins No. 3 and 7. Ohmmeter reading should be 400-800 ohms. Check resistance between pin No. 8 and engine ground. Reading should be zero ohms. Check resistance between pin No. 3 and engine ground, and pin No. 7 and engine ground. Both readings should be more than 70, 000 ohms. If any of the readings are not as indicated, replace pick-up unit.