Without it, your car cannot go anyplace. Yet, a starter solenoid’s only job is to entire the circuit between the battery and the starter when you turn the key to start. However, not all start goes as easily as it should, and the solenoid power refuse to crank the engine, might keep the starter motor running. Happily, even with very little knowledge of electricity you can learn to test an easy solenoid. Achieve the skills to check both on-starter and remote-mounted solenoids. For these tests, it is better if you have the help of an helper.
Things You’ll Need:-
• Two jumper wires, 1 to 2-foot-long
First of all check that your car battery is fully charged before starting these tests.
Move the gear to neutral if you are diagnosing a car with a normal transmission or park if you are diagnosing a car with an automatic transmission.
Apply the parking brake and make sure to stay away from moving engine parts as you proceed with these tests.
Cut off the coil high tension cable from the distributor cap and position it using a short jumper wire.
Ask your helper to turn the explosion key to start while you pay attention for a click at the starter solenoid. If you hear a firm click, go to step 9 if you have an on-starter solenoid; go to steps 10 and 11 if you have a remote-mounted solenoid. If you hear a repeated click sounds, go to the next step.
Unplug the small control circuit wire at the solenoid terminal. If there are two small wires, disconnect the one marked with an “S”; otherwise, check the wiring diagram for your particular vehicle to locate this wire.
Connect a jumper wire to the battery positive terminal. As you bring the other jumper wire’s end in touch with the solenoid’s control circuit terminal you should hear a solid click if you do not hear any sounds, make sure the solenoid is correctly grounded and there is no other matter prevent a good ground. Repeat the test. If you still don’t hear a solid click, change the solenoid.
Unplug the control circuit wire at the solenoid terminal. Ask your helper to turn the key to start. Using a voltmeter, check for voltage at the control circuit wire. If the meter reads 0 volts, there is an open in that part of the circuit preventing the solenoid from operating the starter. Locate and fix the open.
Ask your helper to turn the key to start. Confirm for a voltage drop between the solenoid’s battery terminal and the starter motor strap. The voltage drop should be no more than 0.2 volts; otherwise, changing the solenoid. Make sure the battery cable is well linked to the solenoid.
Ask your helper to turn the key to start. Make sure for a voltage drop across the two cable links on the solenoid. The voltage drop should not exceed 0.2 volts. If it does, make sure the cable links are completely clean and well linked. If you still read over 0.2 volts, replace the solenoid.
Unplug the control circuit wire at the solenoids terminal. Using your multimeter, measure the resistance between the control circuit terminal and the solenoids ground bracket. If the resistance is above 5 ohms, replace the solenoid. Remember, this step is only for remote-mounted solenoids.
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