GF80.50-D-2002H Activate Anti-Theft Alarm System, Function

GF80.50-D-2002H Activate Anti-Theft Alarm System, Function

- with CODE (FZ5) Anti-theft alarm system (ATA [EDW])

The anti-theft alarm system (ATA) is activated by actuating the "Lock" transmitter button on the transmitter key or by the "Relocking" function if the following message and status are present:
- The message "Circuit 15C OFF" is transmitted by the EIS control unit via Control Area Network bus, class B (interior) (CAN B).
- The non-actuated state of the closed ATA hood switch is read in via a discrete line.
- The non-actuated state of the closed front passenger door ZV rotary tumbler switch is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed driver door ZV rotary tumbler switch is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed rear-end door ZV rotary tumbler switch is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed crewcab left door ZV rotary tumbler switch, on model 906.2, is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed crewcab right door ZV rotary tumbler switch, on model 906.2, is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed right sliding door ZV rotary tumbler switch is recognized and transmitted by the SAM control unit via CAN B.
- The non-actuated state of the closed left sliding door ZV rotary tumbler switch is recognized and transmitted by the SAM control unit via CAN B.

The "Lock" message or "Relocking" message is read in by the DBE control unit from the EIS control unit via CAN B.

Relocking ATA system
If the vehicle is unlocked via the "Unlock" transmitter button on the transmitter key and all prerequisites mentioned below are fulfilled, the vehicle is locked after t = 40 s (parameterizable) and simultaneously the ATA system activated.
Simultaneously the message CRASH_M (emergency opening threshold) is transmitted by the lowline airbag control unit or highline airbag control unit via the SAM control and CAN B.
Lowline airbag control unit not in combination with codes:
SH0 Windowbag, driver
SH6 Thoraxbag for driver (in seat backrest)
SH7 Thoraxbag for driver and front passenger (in seat backrest)
SH9 Windowbag for driver and front passenger
Highline airbag control unit transmits in combination with codes:
SH0 Driver windowbag
SH6 Thoraxbag for driver (in seat backrest)
SH7 Thoraxbag for driver and front passenger (in seat backrest)
SH9 Windowbag for driver and front passenger

- A change in the status of the rotary tumbler switch from "CLOSED" to "OPEN" is not transmitted by the SAM control unit via CAN B.
- A change in the status of the transmitted key from "Circuit 15C OFF" to "Circuit 15C ON" is not transmitted by the EIS control unit via CAN B.
- A change in the status of the inside central locking button from "CLOSED" to "OPEN" is not transmitted by the OBF control unit via CAN B.

If the relocking function is interrupted, relocking is still accomplished at the conclusion when the specified conditions are present, if the vehicle is not locked with the remote control.

Relocking is not indicated visually, i.e. the turn signals are not actuated.

Following activation, the BF control unit performs a self-test of the ATA system, whereby a self-test of the control electronics in the OCP control unit is performed and the validity of the input signals (ATA hood switch and all CAN B messages) is checked. If an erroneous or implausible signal from the ATA hood switch is recognized when performing the self-test on the control electronics in the OCP control unit, the ATA hood switch or the component sending the erroneous or implausible CAN message is not evaluated after the ATA system is activated.
If an EEPROM error occurs during the self-test of the control electronics in the OCP control unit (e.g. control electronics in OCP control unit defective), the ATA system is not activated. The turn signal flashes once visually after t = 1.5 s to indicate that the ATA system is not activated. In addition, the LED in the inside central locking button is not actuated.

Activation of the ATA system is indicated visually by the turn signal flashing 3 times as well as the LED flashing in the inside central locking button.

When relocking, activation of the ATA system is also indicated visually, i.e. the LED in the inside central locking button is actuated.

After activation of the ATA system, the OCP control unit reads in the messages and the status of the following components and "monitors" them:
- EIS control unit via CAN B.
- SAM control unit via CAN B.
- Hot water auxiliary heater control unit via CAN B.
- AAC control and operating unit via CAN B.
- ATA hood switch via discrete line.
- 2nd hot water auxiliary heater control unit with diesel heater booster via CAN B
- Front passenger door CL rotary tumbler switch, available from SAM control unit via CAN B.
- Driver door CL rotary tumbler switch, available from SAM control unit via CAN B.
- Rear-end door CL rotary tumbler switch, available from SAM control unit via CAN B.
- Left door crewcab CL rotary tumbler switch, on model 906.2, available from SAM control unit via CAN B.
- Right door crewcab CL rotary tumbler switch, on model 906.2, available from SAM control unit via CAN B.
- Right sliding door ZV rotary tumbler switch available from SAM control unit via CAN B.
- Left sliding door ZV rotary tumbler switch available from SAM control unit via CAN B.

If an implausible condition is recognized when the ATA hood switch is checked, it is not evaluated by the OCP control unit when the ATA system is activated.
If the engine hood is opened when the ATA is activated and is not closed within t > 30 s, the ATA hood switch is not evaluated when the status of the engine hood changes.
If the engine hood is closed within t < 30 s, the ATA hood switch is evaluated when the status of the engine hood changes.