Ignition interlock systems have become a vital component for ensuring road safety, especially for drivers with a history of driving under the influence of alcohol. These systems effectively prevent an impaired driver from starting their vehicle. In this article, we will discuss the ignition interlock wiring diagram and explain how these devices work to prevent drunk driving.
What is an Ignition Interlock System?
An ignition interlock system is a device installed in a vehicle that prevents the car from starting if the driver’s breath alcohol concentration (BrAC) exceeds a predetermined limit. This system is triggered when the driver turns the ignition key or presses the start button. The device requires the driver to blow into a breathalyzer, which measures their BrAC level. If the BrAC level is below the predetermined limit, the vehicle starts; otherwise, the ignition interlock system prevents the vehicle from starting.
Ignition interlock systems are mandatory in most states for drivers with a DUI (driving under the influence) conviction. These systems are highly effective in reducing the number of drunk driving incidents, as they prevent impaired drivers from starting their car.
Ignition Interlock Wiring Diagram: How Does It Work?
The ignition interlock wiring diagram is a crucial aspect of understanding how these systems work. The device comprises several components, including the breathalyzer, control module, and solenoid interlock. The following is a detailed breakdown of each component:
1. Breathalyzer
The breathalyzer is a handheld device that detects alcohol in the driver’s breath. It measures the driver’s BrAC level, which determines whether the vehicle can start or not. The breathalyzer sends a signal to the control module, which analyzes the signal and determines whether the vehicle can start.
2. Control Module
The control module is the heart of the ignition interlock system. It receives signals from the breathalyzer and determines whether to allow the vehicle to start or not. The control module also sends signals to the solenoid interlock, which either allows or prevents the vehicle from starting based on the breathalyzer readings.
3. Solenoid Interlock
The solenoid interlock is a switch that either allows or prevents the vehicle from starting based on the signal sent by the control module. If the control module determines that the driver’s BrAC level is below the predetermined limit, the solenoid interlock allows the vehicle to start. However, if the BrAC level exceeds the limit, the solenoid interlock prevents the vehicle from starting.
FAQ: Frequently Asked Questions
1. How accurate is the breathalyzer?
The breathalyzer used in ignition interlock systems is highly accurate and reliable. The device is designed to detect even small amounts of alcohol, ensuring that an impaired driver cannot start their vehicle.
2. What happens if the driver fails the breath test?
If the driver fails the breath test, the ignition interlock system prevents the vehicle from starting. The driver must wait for a specific period before attempting another test. The waiting period increases for subsequent failed tests.
3. Can the ignition interlock system be tampered with?
The ignition interlock system is designed to prevent tampering. Any attempt to bypass or interfere with the system is detected, and the device enters a lockout mode, preventing the vehicle from starting.
4. How long is the ignition interlock system required?
The duration of the ignition interlock system varies depending on the state and the severity of the offense. In most cases, the device must be installed for at least six months to a year.
5. How much does it cost to install an ignition interlock system?
The cost of installation and maintenance of the ignition interlock system varies depending on the manufacturer and the state. On average, the installation costs range from $75 to $200, while the monthly maintenance fees range from $60 to $100.
Conclusion
The ignition interlock system is a crucial component for preventing drunk driving and ensuring road safety. Understanding the ignition interlock wiring diagram is essential in comprehending how these systems work. If you have been convicted of a DUI, it’s crucial to comply with the ignition interlock system requirements to avoid further legal consequences.
