hey are located inside the distributor and function as the trigger for the ignition system to produce spark. The pickup coil monitors the rotation
For flashing headlights just put a new one in.
Coil's are pretty inexpensive, if it is old, you could just buy a new one put install. If you want to test use an ohm meter to see if power is making it into the coil, and then make sure it is flowing form the distributor to the plug. the first way is kinda of technical, the plug test just requires that you put the plug wire against something metal and try to fire the motor.
Take off the modual and coil pack take it to autozone they will test it free.
In short, YES.
To test the pickup coil on a 1993 Suzuki Sidekick, first, locate the coil, typically found near the distributor. Disconnect the wiring harness and use a multimeter to measure the resistance across the coil terminals; it should typically read between 500 to 1500 ohms. If the reading is outside this range or shows no continuity, the pickup coil may be faulty and should be replaced. Additionally, you can check for proper signal output while cranking the engine to confirm functionality.
To replace the pickup coil in a GM vehicle, first disconnect the battery and remove the distributor cap for access. Next, carefully remove the retaining screws or clips holding the pickup coil in place, disconnect the wiring harness, and take out the old coil. Install the new pickup coil by reversing the removal process, ensuring it's properly aligned, and reconnect the wiring. Finally, reassemble the distributor cap, reconnect the battery, and test the ignition system.
Next time you replace the coil, test and if necessary replace the resistor.
If you are not getting spark to any of the plugs could be coil rotor and/or cap HEI ignition?
To test the pickup coil on a Yamaha V Star Classic 650, first, ensure the motorcycle is off and disconnected from the battery. Use a multimeter set to the ohm (Ω) setting, and measure the resistance across the pickup coil terminals; it should typically be between 200-400 ohms. If the reading is significantly outside this range or shows infinite resistance, the pickup coil is likely faulty and should be replaced. Additionally, you can check for proper signal output while cranking the engine to confirm functionality.
That year blazer does not have either one of those sensors. If you are not getting any spark to the spark plugs. You should replace ingnition module. Need to make sure the coil wire is good, check ingnition coil also.
There is a test procedure for that using an ohm meter. Consult a Chilton's or similar repair manual.
test ignition coil,ignition module,pick-up coil,electronic spark control,and knock sensor