GF80.20-P-2002SX Operating Central Locking With Transmitter Key, Function

GF80.20-P-2002SX Operating Central Locking With Transmitter Key, Function

Component Identification:

Changing functions "global" and "selective" unlocking If the unlock and lock buttons on the transmitter key are pressed simultaneously for 5 seconds, the "global" and "selective" functions change. The indicator lamp on the transmitter key comes on to confirm this change.

^ Global unlocking
The entire vehicle is unlocked by pressing the "Unlock" button on the transmitter key (doors, trunk lid and fuel filler flap).

^ Selective unlocking
Only the driver door and the fuel filler flap are unlocked when the "Unlock" button on the transmitter key is pressed.Only the next actuation of the "Unlock" transmit button unlocks the entire vehicle.

Function sequence for locking or unlocking
When the "Lock/unlock button" on the transmitter key is actuated, it transmits a radio signal to the rear SAM control unit via the antenna amplifier module and relays it to the EIS control unit. An infrared signal is transmitted parallel to the radio signal to the driver door infrared sensor (precise aiming required). This signal is read in by the corresponding door control unit and transmitted to the EIS control unit.

The infrared and radio signals include the same information (redundant); the first signal received is accepted.

In both cases, the EIS control unit checks the access authorization of the transmitter key.If the access authorization is valid, the EIS control unit transmits the "Locking or unlocking" command to the control units and the rear SAM control unit. They then actuate the corresponding door lock units and the fuel filler flap CL motor.

Moreover, the rear SAM control unit enables or disables the opening request from the trunk lid external switch (S88/8).

If the driver door is opened during locking, the driver door is not locked An open passenger door is locked
When the vehicle is unlocked, the interior illumination (IBL) is switched on with the soft-on feature by the overhead control panel control unit (N70).

Visual feedback
After successful locking or unlocking, the turn signal lamps flash as visual feedback.
The function is controlled by the rear SAM control unit, which acts as master flasher forwarding the signal to flash to the door control unit and front SAM control unit with fuse and relay module (N10/1).
^ Locking: flashing 3 times
^ Unlocking: flashing once

If a door is still open when locking, there is no visual feedback.

Function sequence for remot After closing, the trunk lid it is relocked.e trunk lid release (RTR)
When the "Remote trunk release" is actuated, the transmitter key transmits the corresponding signal. The data flow is the same as described previously for "Locking or unlocking".
However, only the trunk lid CL motor (M14/7) is actuated by the rear SAM control unit to unlock the trunk lid. The remaining CL remains deactivated.
After closing, the trunk lid it is relocked.

Mechanical trunk lid locking (only (United States Of America))
The trunk lid can be secured mechanically by locking. The position of the trunk lid is relayed to the rear SAM control unit by the trunk lid contact switch (S88/6). The opening request from the rear SAM control unit is enabled or disabled according to the position.