Operation CHARM: Car repair manuals for everyone.

Design






Design

Alcohol Analyzing Start Inhibitor




The Alcohol Analyzing Start Inhibitor uses a fuel cell to measure the alcohol content in the breath test air. When one blows into the Alcohol Analyzing Start Inhibitor, a pump draws in a determined amount of breath test air into the fuel cell.
The ethanol molecules in the air then generate a weak flow in the cell, the more molecules, the stronger the flow. By measuring the flow strength, the Alcohol Analyzing Start Inhibitor can determine the promille content of the driver. The result of the test is transmitted wirelessly to the Remote Receiver Module (RRX).
The handset unit is powered by an internal battery, which is used each time a breathalyzer test is performed. When the handset is placed in the docking station, which is located behind the center console, the internal battery is charged via the power supply from the Central electronic module (CEM).
From structure week 200946 there is also the option to fit the docking station in the storage compartment in the tunnel console (customer option).
If the handset unit is in the vehicle (the dock), it is automatically activated when the vehicle is unlocked. If the handset unit is not in the dock when the vehicle is unlocked, it must be activated manually via the "on/off button".
At temperatures below -20 °C or above +60 °C the Alcohol Analyzing Start Inhibitor may require an extra power supply. A message to connect a power cable then appears in the Driver information module (DIM). In this mode, the power cable, which is located in the glove compartment, must be connected to the Alcohol Analyzing Start Inhibitor.

Handset unit LEDS





LED 1 indicates the battery charge level:
- Green: The battery is fully charged.
- Flashing green: Battery charging.
- Yellow: Battery half charged.
- Red: Battery discharged. In the event of a red indication, place the Alcohol Analyzing Start Inhibitor in the charging cradle or connect the power cable from the glove compartment.

LED 2 indicates the result of the breath test.
- Green: Approved breath sample (less than 0.1 promille). A message indicating an approved breath test appears in the Driver information module (DIM) and the vehicle can be started. If a new start attempt is made within 30 minutes, the vehicle can be started without a new breath test having to be performed. If this is possible a message appears in the Driver information module (DIM).
- Yellow: The breath sample has a high alcohol content (0.1 - the country's statutory promille limit). A message appears in the driver information module (DIM) and the vehicle can be started, but Volvo recommends waiting and taking another breath test later.
- Red: The breath test has not been approved (higher than the country's statutory promille limit). The vehicle cannot be started without activating the BYPASS function.

LED 3 indicates whether the device is ready for a breath test:
- Green: The Alcohol Analyzing Start Inhibitor is ready for a breath test to be taken.
- Flashing yellow: The device prepares itself by reading the temperature, testing the pump and heating up the fuel cell. This can take longer at colder temperatures.
- Red: The test has failed. This may be due to moisture in the Alcohol Analyzing Start Inhibitor or that the inhibitor has been affected by a radio transmitter, for example.