GF80.40-P-3001S Power Locking Doors, Function

GF80.40-P-3001S Power locking doors, function

The power locking closes a door completely when it is only touching the first catch.

Function sequence using left front door as example:
The left front door power locking drive pawl microswitch (S86/2) opens when the door is in the first catch position. This is recognized by the left front door control module (N69/1). The left front door control module (N69/1) signals to the PSE control module (combined) (A37) via the CAN bus that the door is not closed.

The PSE control module (combined) (A37) causes the left front door control module (N69/1) to switch over the solenoid valve on the door lock. The solenoid valve switches the pneumatic line on the pneumatic actuator for power locking. The left front door control module (N69/1) acknowledges the switchover of the solenoid valve to the PSE control module (combined) (A37) via the CAN bus.

The power locking pneumatic actuator receives pressure from the PSE control module (combined) (A37) and the door is moved to the end position. The air pressure is decreased again.

The left front door control module (N69/1) then switches the solenoid valve to the "central locking" position.

The PSE control module (combined) (A37) switches off when:
- the maximum pressure for power locking is reached,
- a certain safety time is expired and/or
- the request signal is no longer present.

The safety time depends on the battery voltage
with U(batt) >= 13 V, t=9 s,
with U(batt) <= 9 V, t=15 s.

If the safety time is exceeded twice for the trunk lid, the PSE control module (combined) (A37) recognizes a fault and disables the power locking function for the trunk lid. The trunk lid can be locked again by the power locking only after the PSE control module (combined) (A37) has been disconnected from circuit 30.