engine BMW 8 SERIES 1995 E31 Drive Away Protection Syst

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 8 SERIES 1995 E31 BMW BMW https://www.carmanualsonline.info/img/1/5427/w960_5427-0.png BMW 8 SERIES 1995 E31 Drive Away Protection Syst

Page 4 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 4
EWS
Principle of Operation
When the vehicle is locked from the outside, a High signal is sent to the GM from the door
lock  switch.  The  GM  receives  this  High  signal  and  outputs  a  High  sig

Page 5 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 5
EWS
EWS I
EWS  I  was    installed  on  vehicles  beginning  production 1/94,  replacing  the  original  Drive
Away Protection System.
Purpose of the System
The next level of compliancy with the Eur

Page 6 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 6
EWS
Door Lock Cylinders and Switch
The door lock cylinders and switch input a High/Low signal into the GM informing the GM
of lock status.  The signal is High when the system is in Double Lock. 
Gen

Page 7 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 7
EWS
• 4 cylinder =1800 RPM
• 6 or 12 cylinder =1200 RPM
• 8 cylinder      =900 RPM
The  relay  contacts  will  close  when  the  exceeded  Hz  value  drops  to  5Hz  below  the  maxi-
mum valu

Page 8 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 8
EWS
EWS II
Starting with 1/95production, all vehicles were equipped with a new EWS system, EWS II.
This  change  was  once  again  brought  about  to  meet  the  next  level  of  compliancy  with  t

Page 11 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 11
EWS
EWS II Control Module
The  EWS II  Control  Module  is  linked  to  the  BC,  GM,  DME,  Trans  Range  switch  and  the
starter for drive away protection operation. The module incorporates an i

Page 12 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 12
EWS
DME
The  DME  is  redesigned  to  incorporate  the  new  ISN  code.  As  of  production  1/95  all  DME
control modules will contain the unique ISN number and will not interchange with previous

Page 15 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 15
EWS
Replacement Procedures
Keys
Up  to  6  additional  keys  may  be  ordered  as  replacement  keys.  The  EWS  II  control  module
is codeable for only 10 keys (4 delivered with vehicle and 6 rep

Page 16 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 16
EWS
EWS III (3.2)
The 1997 Model Year E38is equipped with EWS III (3.2) drive away protection. E39vehi-
cles produced 3/97and later are also equipped with EWS III (3.2).
Purpose of the System
The m

Page 17 of 30

BMW 8 SERIES 1995 E31 Drive Away Protection Syst 17
EWS
Lock and Unlock Requests
The  lock  and  unlock  information  arrives  at  the  GM  over  the  P-Bus  from  the  door  module
and is sent via the K-Bus to the EWS III (3.2) control module.  Thi
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