Function

Function

Alcohol Analysing Start Inhibitor

S60/S80/V70/XC70/XC60





C30/C70/S40/V50




In a vehicle with an Alcohol Analyzing Start Inhibitor installed, the driver must provide a breath sample into the Alcohol Analyzing Start Inhibitor handheld unit in order to be able to start the vehicle. If the test is approved (alcohol content lower than the country's statutory promille limit) and an approved remote control key is used in the start control unit (SCU), the central electronic module (CEM) permits the vehicle to be started.
Also see Design and Function, Immobilizer/Start inhibition.
The Alcohol Analyzing Start Inhibitor communicates with the Remote Receiver Module (RRX) wirelessly, just like the vehicle's remote keys. The Remote Receiver Module (RRX) transmits information to the Central electronic module (CEM) via LIN. The Central electronic module (CEM) then communicates via the CAN network with the Driver information module (DIM) and the Engine control module (ECM).
The Alcohol Analyzing Start Inhibitor cannot be used in vehicles with keyless entry.

Alcohol Analyzing Start Inhibitor communication with the vehicle.
A test result can be sent from the Alcohol Analyzing Start Inhibitor within a radius of 10 meters from the vehicle. The result from the breath sample is stored in the Alcohol Analyzing Start Inhibitor for 30 seconds and can be sent again via the send button on the handheld unit. The Alcohol Analyzing Start Inhibitor, however, cannot receive messages from the vehicle, so it cannot know, for example, whether the driver has used the BYPASS function. The vehicle cannot be unlocked using the Alcohol Analyzing Start Inhibitor.

The Alcohol Analyzing Start Inhibitor can send the following types of messages to the vehicle:
1. Help messages to the driver (Blow harder, Blow softer, Blow for 5 seconds.)
2. The test results (Approved test, Non-approved test)
3. Error messages and status (Invalid test, Service required, Calibration required)
Communication with the vehicle does not work in all key positions. If, for example, the vehicle is attempted to be started without an approved test result, a message appears stating to switch off the ignition in the Driver information module (DIM).
In the S60/S80/V70/XC60/XC70 remove the key from the ignition WITHOUT pressing any of the pedals.
In the C30/C70/S40/V50 turn the key to position I. Then blow into the Alcohol Analyzing Start Inhibitor to be able to start the vehicle.

Bypass
It is possible to start the vehicle by bypassing the Alcohol Analyzing Start Inhibitor function, so called BYPASS. An internal counter in the Central electronic module (CEM) stores the number of times the system has been bypassed. When the counter reaches a maximum of 255, it does not reset automatically and will not increase in the event of further bypasses. If the counter is greater than zero (0), a message appears stating that the Alcohol Analyzing Start Inhibitor Bypass has been activated in the Driver information module (DIM) each time the vehicle is started.
The counter can be reset in VIDA under DIAGNOSTICS/VEHICLE COMMUNICATION. There you will find a parameter list that continuously logs the last five events.
For more information about bypassing the alcolock, see the owner's manual.