There are a few different ways to test an ignition switch. The easiest way is to simply try starting the vehicle. If the engine does not start, the ignition switch may be faulty.
Another way to test the ignition switch is to use a multimeter. Set the multimeter to the “volts“ setting and connect the positive lead to the ignition switch terminal and the negative lead to the ground terminal. If the multimeter reads 12 volts, the ignition switch is working properly.
If the ignition switch is not working properly, you can try to repair it. However, it is often easier and more cost–effective to simply replace the ignition switch.
Symptoms of a Faulty Ignition Switch
There are a few different symptoms that may indicate a faulty ignition switch:
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The engine does not start when you turn the key.
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The engine stalls while you are driving.
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The dashboard lights flicker or go out while you are driving.
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The key gets stuck in the ignition switch.
How to Test an Ignition Switch with a Multimeter
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Set the multimeter to the “volts“ setting.
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Connect the positive lead of the multimeter to the ignition switch terminal.
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Connect the negative lead of the multimeter to the ground terminal.
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Turn the key to the “On“ position.
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The multimeter should read 12 volts.
If the multimeter does not read 12 volts, the ignition switch is faulty.
How to Replace an Ignition Switch
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Disconnect the battery.
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Remove the steering wheel.
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Remove the ignition switch cover.
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Disconnect the electrical connectors from the ignition switch.
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Remove the ignition switch.
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Install the new ignition switch.
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Reconnect the electrical connectors to the ignition switch.
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Reinstall the ignition switch cover.
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Reinstall the steering wheel.
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Reconnect the battery.
Tips
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If you are not comfortable working on your vehicle‘s electrical system, you should have the ignition switch tested and replaced by a qualified mechanic.
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It is important to use the correct tools and procedures when testing and replacing an ignition switch.
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If you are replacing the ignition switch, be sure to purchase a new ignition switch that is compatible with your vehicle.
Conclusion
The ignition switch is a critical component of your vehicle‘s electrical system. If the ignition switch is faulty, your vehicle will not be able to start. You can test the ignition switch yourself using a multimeter. If the ignition switch is faulty, you can repair it or replace it.
Table: Troubleshooting Ignition Switch Problems
Symptom | Possible Cause | Solution |
Engine does not start | Faulty ignition switch | Test the ignition switch with a multimeter. If the ignition switch is faulty, replace it. |
Engine stalls while driving | Faulty ignition switch | Test the ignition switch with a multimeter. If the ignition switch is faulty, replace it. |
Dashboard lights flicker or go out while driving | Faulty ignition switch | Test the ignition switch with a multimeter. If the ignition switch is faulty, replace it. |
Key gets stuck in ignition switch | Faulty ignition switch | Test the ignition switch with a multimeter. If the ignition switch is faulty, replace it. |
Additional Resources
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