GF80.40-P-3002S Power Locking Trunk Lid, Function

GF80.40-P-3002S Power Locking Trunk Lid, Function

The power locking feature closes the trunk lid completely when it is in contact with the first catch. The contact in the trunk lid closing assist locking eye microswitch (S88/3) opens when the trunk lid lock is in the first catch. This is recognized by the rear SAM control module (N10/8). The rear SAM control module (N10/8) signals the status of the switch to the PSE control module (combined) (A37) via the CAN bus. The PSE control module (combined) (A37) actuates the solenoid valve on the trunk lid lock. The solenoid valve switches the pneumatic line to the power locking pneumatic actuator. The power locking pneumatic actuator for the trunk lid lock receives pressure from the PSE control module (combined) (A37). The trunk lid is moved to the final closed position. The air pressure is reduced again.

The PSE control module (combined) (A37) switches off when:
- the maximum pressure for power locking is reached and/or
- 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 for the trunk lid is exceeded twice, the PSE control module (combined) (A37) recognizes a fault and disables the trunk lid power locking feature. 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.