Pick-Up Coil Operation:
Used instead of breaker points, the pick-up coil induces voltage in an electronic ignition system. It's a small electric generator that sends low voltage pulses to the ECU (electronic control unit) as the trigger wheel or reluctor teeth pass by. When the trigger wheel tooth approaches the pickup coil, the voltage builds. When the tooth moves away, the voltage decreases. The ECU senses the voltage changes and determines the proper time to switch the primary current to the coil on and off. This allows the coil to build the magnetic field in the primary windings and fire when the ECU cycles the current off.
How To Instructions:
- Check for obvious problems.
- Give it an in-depth diagnosis.
- Do the jobs that fix your car.
- Out with the old, in with the new.