Self-Study Program

65
Reference
The basic functions of the ignition key
withdrawal lock are described in Self-Study
Programme 283 (page 28 onwards).
367_108
367_107
Ignition key withdrawal lock
The ignition key withdrawal lock is realised
automatically by a mechanical locking mechanism
integrated in the entry and start authorisation
switch E415.
The ignition key withdrawal lock is released electro-
mechanically by brief activation of the ignition key
withdrawal lock solenoid N376. For this purpose,
switch E415 requires information on selector lever
position "P".
The information on selector lever position "P" is
supplied by the two mechanical microswitches
F305. They are connected in series and form a unit.
In selector lever position "P", the two switches are
closed and deliver a ground signal directly to E415.
If the ignition is turned off, solenoid N376 is
energised by E415 for a short time, whereupon an
unlocking mechanism cancels the ignition key lock.
For safety reasons, two microswitches are fitted:
Microswitch 1 is closed the selector lever button is
released in selector lever position "P" (the button is
not pressed).
The series-connected resistor enables
the signal line to be diagnosed.
Microswitch 2 is closed when the stop lever for the
P/N lock is in its home position (refer to "Shift
locks").
It signals when the selector lever is actually locked
in position "P".
Microswitch 1
with resistor
P signal
Microswitch 2
Emergency release
(refer to SSP 283, page 31)
Microswitch 1 Microswitch 2