Locking/unlocking vehicle with inside switch, function - GF80.20-P-3009LE

MODEL 221.0 /1, 216.3 as of model year 09 /YoM 08 

General function requirements 

• Vehicle must not be locked from outside with transmitter key (A8/1)

Locking/unlocking vehicle with inside switch, general 

The vehicle can locked/unlocked with the left interior actuation CL switch (S85/5), right interior actuation CL switch (S85/6) and trunk lid open/close switch (S20/1s6).

The function locking/unlocking vehicle with interior switch comprises the following partial functions:

• Function sequence for locking/unlocking CL 
• Function sequence for unlocking trunk lid (opening) 
• Function sequence for trunk lid emergency opening (with code (494) USA version) 

Additional function requirements for locking/unlocking CL 

• Vehicle unlocked globally or selectively

Function sequence for locking/unlocking 

The vehicle can be locked and unlocked by actuation the interior CL actuation switch (except fuel filler flap).

The left interior actuation CL switch is read in by the left front seat operation switch group (S22). The seat operation switch group transmits the request to the left front door control unit (N69/1) (model 221) or left door control unit (N69/1) (model 216) via the front door LIN.

The right interior actuation CL switch is read in by the right front seat operation switch group (S23). The seat operation switch group transmits the request to the right front door control unit (N69/2) (model 221) or right door control unit (N69/2) (model 216) via the front door LIN.

The corresponding door control unit relays the signal to the EIS control unit (N73) via the interior CAN.

The EIS control unit transmits the "Lock or unlock" command to the following control units via the interior CAN:

Model 221:

• Left front door control unit
  • Left front door lock unit actuation (A85)
• Right front door control unit
  • Right front door lock unit actuation (A85/1)
• left rear door control unit (N69/3)
  • Left rear door lock unit actuation (A85/3)
• Right rear door control unit (N69/4)
  • Right rear front door lock unit actuation (A85/4)
• Rear SAM control unit with fuse and relay module (N10/2)
  • Trunk lid CL motor actuation (M14/7)

Model 216:

• Left door control unit
  • Left door lock unit actuation (A85)
• Right door control unit
  • Right door lock unit actuation (A85/1)
• Rear SAM control unit
  • Trunk lid CL motor actuation

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

The unlocking and locking functions are enabled depending on the door status as follows:

Driver and passenger door closed:

• Unlocking function activated
• Locking function activated

Passenger door open:

• Unlocking function activated
• Locking function deactivated

Driver door open:

• Unlocking function activated
• Locking function activated (Drive's door not actuated)

The current door status of the front doors is relayed by the corresponding door lock unit to the corresponding door control unit which relays the signals to the EIS control unit.

Additional function requirements for unlocking trunk lid (opening) 

• Vehicle unlocked globally (not with emergency opening (with code (494) USA version))

Function sequence for unlocking trunk lid(opening) 

The trunk lid open/close switch is located in the driver side outside mirror and trunk lid power window switch group (S20/1) and is read in by the corresponding door control unit via the front door LIN.

When the trunk lid open/close switch is actuated, the signal is transmitted from the door control unit via the interior CAN to the EIS control unit and from there relayed to the rear SAM control unit. The latter actuates the trunk lid CL motor to unlock.

Function sequence for trunk lid emergency opening 

The trunk lid emergency opening switch (S88/10) is located on the inside of the trunk lid and is read in by the rear SAM control unit. When the trunk lid emergency release switch is actuated, the rear SAM control unit actuates the trunk lid CL motor to unlock.

The function is dependent of the vehicle speed and locking status of the CL.

	Function schematic for electric central locking with interior switch, locking and unlocking	Model 216	PE80.20-P-2053-97CAA
		Model 221	PE80.20-P-2053-97SAA
	Rear SAM control unit with fuse and relay module, component description	N10/2	GF54.21-P-6030LE
	Left door control unit, component description	N69/1 Model 216	GF72.29-P-4124LA
	Left front door control unit, component description	N69/1 Model 221	GF72.29-P-4141LE
	Right door control unit, component description	N69/2 Model 216	GF72.29-P-4128LA
	Right front door control unit, component description	N69/2 Model 221	GF72.29-P-4142LE
	Rear door control unit, component description	N69/3, N69/4 Model 221	GF72.29-P-6020LE
	Component description for the EZS control unit	N73	GF80.57-P-6003LE