Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: cant completely disable VATS in 01 holden SS?

  1. #1
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default cant completely disable VATS in 01 holden SS?

    Hey guys,
    Im installing an alarm system into a VX holden commodore and I am having a problem with the remote start due to VATS. I have set all anti-theft values to none, which has only half worked.... Now the car starts without the key head, but i need to press unlock on the key head first.....?

    I cant figure it out, if I enable VATS then the car only starts with the head attached.......???

    Any ideas?

  2. #2
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default

    Sorry forgot to addm I'm running COS3 if that makes any difference?

  3. #3
    Lifetime Member ChipsByAl's Avatar
    Join Date
    Feb 2006
    Posts
    617

    Default

    I am not sure about the Holden's but does GM offer a kit for this along with a new remote? It works with all of the factory components and won't cause other issues.
    Al
    "Trash that carb and get Injected!"

  4. #4
    Lifetime Member Biggsy's Avatar
    Join Date
    Jan 2007
    Posts
    410

    Default

    The problem you have is the BCM still requires "disarming", it has control over the starter motor relay. The only way around that I can see is to rewire the starting circuit so it doesn't use the BCM.
    Same sort of thing if you were doing a conversion of that motor into a different car.
    Dave.

  5. #5
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default

    Hi All,
    After looking at it further it is definately something to do with the tune/software.... Then start relay is grounded through a ecu collector, when the ecu recieves the class2 data for unlock then the start relay is grounded out which allows crank.

    I tested starting the car with G1201 set to Class 2 and none and the car starts both times ony if the car is unlocked with the remote..... Which leads me to believe that it is not functional (if it was the bcm then it shouldnt stat at all when set to class2).

    Any ideas?

    I can just ground out the relay, but I dont believe that I sould have to.... And im not sure if it will effect anything (ie is this how the ecu knows when its cranking or not?)

  6. #6
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default

    sorry forgot to post the tune.
    Attached Files Attached Files

  7. #7
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    The starter relay is not driven by the PCM, rather the PIM, the PIM allows the starter realy to engage when the BCM has passed the key unlock, it has nothing to do with the PCM.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  8. #8
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default


    Thank you for the clarification, all the schematics I could find had the relay grounding out to the PCM at WD5 (solid grey), I will rip the dash apart and check.

    Out of interest, if it is the PIM that controlls the starter relay/immobiliser, why is G1201 inlcuded in the tune config if it cannot control it? No matter what option I set it to it does not do anything (and it specifically mentions holden)? I would have thought when set to class 2 it should stop the car from starting without the key head being read and not start at all when set to PWM?

    Not trying to be a smart-arse, just want to make sure that all the info is available for the next person that attempts something similar...

  9. #9
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    It's a funny system Holden used with the PIM.

    The PCM will just cut injection, so with a mismatched VATS code (PCM and PIM different) the engine will run for 1/2 second then stop. This is independent of the key <> BCM codes.

    It does have a failsafe mode though where you get a couple of starts from memory if communications is lost between the PCM and PIM. But, if the PCM see's the no start message from the PIM then it won't run.

    FYI, the PIM is located in the left hand kick panel.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  10. #10
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default

    Ross u da man! Cheers for that, seems holden just slapped it together without putting alot of thought into it

    Any ideas if im going to cause any dramas by grounding the starter relay out (bypassing the PIM)?

Page 1 of 2 12 LastLast

Similar Threads

  1. E38 / E67 VATS disable guide
    By GMPX in forum E37, E38 & E67 PFI ECM's
    Replies: 141
    Last Post: March 22nd, 2023, 12:35 PM
  2. E38 VATS will not disable
    By v8vegaman in forum E37, E38 & E67 PFI ECM's
    Replies: 43
    Last Post: March 16th, 2010, 02:29 PM
  3. E38 cant disable VATS
    By minytrker in forum E37, E38 & E67 PFI ECM's
    Replies: 30
    Last Post: October 30th, 2009, 03:43 PM
  4. How do I disable VATS.
    By PRAY in forum Gen III V8 Specific
    Replies: 6
    Last Post: February 18th, 2009, 11:45 AM

Posting Permissions

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