"Diagnosing a no-start issue with your Nissan requires a logical approach to discovering what might be stopping your car from starting. When you try to start your car, voltage from the battery passes through the ignition switch to the Park/Neutral safety switch then to the brake/clutch pedal to the starter solenoid. When voltage reaches the solenoid, a contact is closed that sends power to the starter to start the engine. The starter motor spins, pushes the starter pin into the flywheel and rotates the engine."
My Nissan Won't Start | eHow.com:
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