GF80.20-P-2010SX Opening Remote Trunk Closing (RTC), Function

GF80.20-P-2010SX Opening Remote Trunk Closing (RTC), Function
- with CODE (881) Remote trunk closing (RTC [HDFS])

Component Identification:

Function requirements
^ Normalize trunk lid
^ No overvoltage/undervoltage
^ Vehicle standing still (not with emergency opening (Unites States Of America) Central locking (CL) unlocked
^ Central locking (CL) unlocked (with trunk lid external actuation switch control and trunk lid open/close switch)

Function
The trunk lid can be opened via the following 4 controls. Actuation differs only up to the time the request is present at the rear SAM control unit

1.1 Transmitter key
When the "Trunk lid opening" transmit button is actuated for longer than 0.5 s, the transmitter key transmits a radio signal to the rear window antenna amplifier module. This signal is relayed to the EIS control unit via the rear SAM control unit. The EIS control unit checks the access authorization of the transmitter key.
If the access authorization is valid, the EZS control unit sends the command "Open trunk lid" to the rear SAM control unit.

1.2 Trunk lid external operation switch
When the trunk lid external operation switch is actuated, the command to open the rear SAM control unit is read in.

1.3 Trunk lid open/close switch
Trunk lid open/close switch When the trunk lid open/close switch is actuated, the "Open" signal is read in by the corresponding door control unit via front door LIN. The door control unit relays the signal to the TLC control unit and rear SAM control unit via the interior CAN.

1.4 Trunk lid emergency release switch (Unites States Of America)
When the trunk lid emergency release switch is actuated, the command to open the rear SAM control unit is read in.

2 Actuating open trunk lid (independent from controls) The rear SAM control unit actuates the trunk lid CL motor to unlock the trunk lid.If the trunk lid is unlocked, the rear SAM control unit transmits this signal via the interior CAN to the TLC control unit, which actuates the TLC hydraulic pump. When the trunk lid has reached its end position, the TLC hydraulic pump is stopped by the TLC control unit and the trunk lid remains in the open position.
The opening procedure is monitored by the trunk lid position sensor.

If an opening is requested during the opening procedure, the automatic drive is stopped.

Regardless of how the trunk lid is opened, the rear SAM control unit transmits a feedback signal to the left door control unit via the open trunk lid via the interior CAN, which then actuates the function LED in the trunk lid open/close switch.