1996 E36 318iS Coupe - Inconsistent Alarm behaviour/non-starting - Page 2

Notices
 

Thread: 1996 E36 318iS Coupe - Inconsistent Alarm behaviour/non-starting

Reply to Thread
Page 2 of 2 FirstFirst 12
Results 11 to 18 of 18
  1.  
    #11
    BMW Guru
    Car Details
    billywhizz1984's Car Details
    Model of Car:
    E36 323i x 3, 325TDS x 1, 320i x 2, 318is x 1
    Year of Manufacture:
    1999 x 2, 1998, 1997 x 2, 1996, 1995
    Transmission Type:
    Manual, Auto, Auto, Manual, Auto, Auto, Manual
    Car Body Type:
    Touring x 4, Convertible x 2, Coupe x 1
    billywhizz1984's Avatar
    Join Date
    Sep 2009
    Location
    North East
    Posts
    2,493
    Images
    4
    Thanks
    165
    Thanked 932 Times in 703 Posts
    Quote Originally Posted by Difflock View Post
    Hi, I'm new to BMW's, so don't know the systems in question that well, yet. Am I right in thinking the EWS is the immobiliser part of the anti-theft device, is a BMW designed system, and is independent of any aftermarket alarm system? When you say that the "EWS is 'on' constantly", is that the condition it should be in? Surely, when everything is de-activated, ignition key cranking the engine, the immobiliser should be in the 'off' state?

    Please forgive my ignorance if I'm wrong; as I say I'm new to BMW's.
    With respect, I know you are trying to help but please don't post if you yourself don't understand the problem, it just confuses matters. Thanks.
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #12
    BMW Guru
    Car Details
    billywhizz1984's Car Details
    Model of Car:
    E36 323i x 3, 325TDS x 1, 320i x 2, 318is x 1
    Year of Manufacture:
    1999 x 2, 1998, 1997 x 2, 1996, 1995
    Transmission Type:
    Manual, Auto, Auto, Manual, Auto, Auto, Manual
    Car Body Type:
    Touring x 4, Convertible x 2, Coupe x 1
    billywhizz1984's Avatar
    Join Date
    Sep 2009
    Location
    North East
    Posts
    2,493
    Images
    4
    Thanks
    165
    Thanked 932 Times in 703 Posts
    Quote Originally Posted by Markie76 View Post
    Can you explain what you mean by that?
    You've read my guide I take it?

    http://www.bimmerforums.co.uk/forum/...3g-ews-t39173/

    You can cut the alarm/immobiliser out iof the loom when deactivated. If the car is starting then EWS is deactivated so that is the safe time to do so. When the alarms start to become intermittent replacement is often the best option.
     
     

  4.  
    #13
    BMW Master
    Car Details
    Markie76's Car Details
    Model of Car:
    323i LPG
    Year of Manufacture:
    1998
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    Markie76's Avatar
    Join Date
    Jul 2009
    Location
    London
    Posts
    314
    Thanks
    29
    Thanked 28 Times in 26 Posts
    Quote Originally Posted by billywhizz1984 View Post
    You've read my guide I take it?

    http://www.bimmerforums.co.uk/forum/...3g-ews-t39173/

    You can cut the alarm/immobiliser out iof the loom when deactivated. If the car is starting then EWS is deactivated so that is the safe time to do so. When the alarms start to become intermittent replacement is often the best option.
    Hi,

    Yes I have read your excellent post

    Removing the alarm is what I have planned for Monday.

    Correct me if my thinking is wrong, but to 'quick remove' the alarm, I can just unplug it and hotwire the two 'broken' circuits at the connector?
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #14
    BMW Guru
    Car Details
    billywhizz1984's Car Details
    Model of Car:
    E36 323i x 3, 325TDS x 1, 320i x 2, 318is x 1
    Year of Manufacture:
    1999 x 2, 1998, 1997 x 2, 1996, 1995
    Transmission Type:
    Manual, Auto, Auto, Manual, Auto, Auto, Manual
    Car Body Type:
    Touring x 4, Convertible x 2, Coupe x 1
    billywhizz1984's Avatar
    Join Date
    Sep 2009
    Location
    North East
    Posts
    2,493
    Images
    4
    Thanks
    165
    Thanked 932 Times in 703 Posts
    There should be no broken circuits unless something has been hotwired. The alarm works the immobiliser by sending the double lock signal to the EWS module, mimicking the action of the door lock.
     
     

  7.  
    #15
    BMW Master
    Car Details
    Markie76's Car Details
    Model of Car:
    323i LPG
    Year of Manufacture:
    1998
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    Markie76's Avatar
    Join Date
    Jul 2009
    Location
    London
    Posts
    314
    Thanks
    29
    Thanked 28 Times in 26 Posts
    Quote Originally Posted by billywhizz1984 View Post
    There should be no broken circuits unless something has been hotwired. The alarm works the immobiliser by sending the double lock signal to the EWS module, mimicking the action of the door lock.
    Ok, got to the car, disarmed, turned the key it cranked and started in 2 seconds.
    Excellent I thought, switched off - unplugged the alarm brain - tried the ignition - all the lights came on as normal - turned to the start position and absolutely nothing. Tried again and nothing.
    Plugged the alarm brain back in, turned the key and it started. Then every time I tried it, even arming and disarming it still starts.
    Will see what it does tomorrow.

    I have pasted my alarm 'wiring diagram' below - I assume this is how it has been installed, the only difference is I don't have a touch key recepticle fitted. The connector with the melted plastic surround is one of the 'GR' wires.

     
     

  8.  
    #16
    BMW Guru
    Car Details
    joylove's Car Details
    Model of Car:
    328
    Year of Manufacture:
    1998
    Transmission Type:
    Manual
    Car Body Type:
    cabrio

    Join Date
    Sep 2010
    Location
    UK
    Posts
    1,500
    Thanks
    108
    Thanked 467 Times in 367 Posts
    Looks like the alarm has a way to disconnect those two GR lines, disabling the car. I'd check on how they are wired in. Chances are the relay in the alarm is only rated to 15-20A and that the connector only to say 10A per pin. The current flowing in there could well be more.

    If the GR wiring at the engine management/fuel pump side is a bodge, with crimped connectors and very long wires back to the glovebox area, coupled with a charred high resistance at the alarm connector, it could be presenting a high resistance as it ages, preventing the vehicle from starting every time.

    Have you measured and compared the actual voltages on the Z, GR, GND and power supply pins to the alarm when it is in it's working and failed state?
     
     

  9.  
    #17
    BMW Guru
    Car Details
    billywhizz1984's Car Details
    Model of Car:
    E36 323i x 3, 325TDS x 1, 320i x 2, 318is x 1
    Year of Manufacture:
    1999 x 2, 1998, 1997 x 2, 1996, 1995
    Transmission Type:
    Manual, Auto, Auto, Manual, Auto, Auto, Manual
    Car Body Type:
    Touring x 4, Convertible x 2, Coupe x 1
    billywhizz1984's Avatar
    Join Date
    Sep 2009
    Location
    North East
    Posts
    2,493
    Images
    4
    Thanks
    165
    Thanked 932 Times in 703 Posts
    Just unplugging the module won't work. The EWS system expects an input if the module is wired in as it has a failsafe to stop thieves just unplugging the module! The only way to remove it is to cut it out as previously described.
     
     

  10.  
    #18
    BMW Master
    Car Details
    Markie76's Car Details
    Model of Car:
    323i LPG
    Year of Manufacture:
    1998
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    Markie76's Avatar
    Join Date
    Jul 2009
    Location
    London
    Posts
    314
    Thanks
    29
    Thanked 28 Times in 26 Posts
    Quote Originally Posted by billywhizz1984 View Post
    Just unplugging the module won't work. The EWS system expects an input if the module is wired in as it has a failsafe to stop thieves just unplugging the module! The only way to remove it is to cut it out as previously described.
    Ok. So you mean when it starts ok, leave it plugged in but cut the immobilised circuit wiring from the connector?
     
     

Page 2 of 2 FirstFirst 12
Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts