GF80.50-P-2004TA Anti-Theft Alarm Actuation, Function

GF80.50-P-2004TA Anti-Theft Alarm Actuation, Function
- with CODE (551a) Anti-theft alarm system (ATA)

Component Identification:

Alarm actuation towing sensor
The ATA tilt sensor (B33) reacts to changes in the position of the vehicle inclination > 1° along the longitudinal and lateral axis of the vehicle. Actuation is accomplished by low pulse with a duration of 2 s. The signal is transmitted by the ATA tilt sensor (B33) to the rear SAM control module with fuse and relay module (N10/2).

Alarm actuation via interior protection and glass breakage protection (with code (882b) infrared interior monitoring (only with ATA))
The passenger compartment is monitored by the interior protection sensor (E15/3b2), the left rear glass breakage sensor (B39), the right rear glass breakage sensor (B39/1) and the rear window glass breakage sensor (B39/4) and is ready for alarm 10 s after the vehicle is locked. Actuation is accomplished with a serial signal, the signal transmission is accomplished by the overhead control panel control module (N70) to the rear SAM control module with fuse and relay module (N10/2).

When the rain/light sensor moves the sliding/pop-up roof (on vehicles with code (414a) electric glass sliding/pop-up roof) to the pop-up position, when the vehicle is parked, the alarm is not actuated.

Alarm actuation via alarm contacts
The alarm contacts:
^ Left front door contact switch (S17/3),
^ Right front door contact switch (S17/4),
^ Left rear door contact switch (S17/5),
^ Right rear door contact switch (S17/6),
^ ATA engine hood switch (S62) and
^ Tailgate locking unit (A72)
are monitored cyclically by the rear SAM control module with fuse and relay module (N10/2)

The actuation is accomplished when an alarm input exits its non- actuated state for 0.5 s. The actuation is accomplished when an alarm input exits its non-actuated state for 0.5 s.

Alarm actuation from signal loss to alarm signal horn (H3)
The alarm signal horn (H3) receives cyclically (0.4 s) a message from the rear SAM control module with fuse and relay module N10/2).
If it does not receive a signal for 1 s, the rear SAM control module with fuse and relay module (N10/2) assumes intentional interruption of the line. The rear SAM control module with fuse and relay module (N10/2) immediately transmits the message for activation of an optical alarm.
The alarm signal horn (H3) itself reacts on the loss of signals (line interruption of data line) by actuating an acoustic alarm

Alarm actuation with trailer monitoring (only with code (550) trailer hitch)
The trailer recognition control module (N28/1) monitors the trailer hitch socket, 13-pin (X58).
An alarm is actuation is transmitted to the rear SAM control module with fuse and relay module (N10/2) by the CAN class B bu

Alarm actuation from power loss
If the power supply of the armed ATA is interrupted, an acoustic alarm is started automatically The power is then supplied an internal rechargeable battery of the alarm signal horn (H3).

The remaining anti-theft alarm (ATA) is without any function If the power is connected the rear SAM control module with fuse and relay module (N10/2) actuates the anti-theft alarm (ATA) completely If the alarm is already completed when the power is connected, optical alarm does not start However, if the acoustic alarm is still active, the optical alarm is output completely.

Repeated alarm
An alarm is only output again if a new alarm is actuated after the activated acoustic alarm has expired Actuating the alarm again results in an increase in the time of the optical and acoustic alarm. The same activation times apply for repetition as for a new alarm.

Acoustic alarm
All acoustic signals are checked and output by the alarm signal horn (H3).
Type and duration of the alarm can be programmed and are stored as identification fields in the memory of the alarm signal horn (H3).