355 door locks, central locking | Page 2 | FerrariChat

355 door locks, central locking

Discussion in 'Technical Q&A' started by Will348, Apr 19, 2019.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
     
  2. lanab

    lanab Formula Junior

    Feb 21, 2016
    524
    Stockholm, Sweden
    I have another problem, i can lock the doors from the inside with the lock switch on the console, but i can't unlock the doors with the unlock switch, i tried swapping the switches to see if there was a problem with the unlock switch but it's the same.

    Could it be some sensor inside the doors not functioning?
     
  3. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
    Can you unlock it with the fob? (and the external key?)

    The only sensor is the internal microswitch in the lock actuator assembly. It needs to change state when the actuator plunger moves from fully extended to fully retracted (or vice versa).

    Image Unavailable, Please Login

    If you can unlock it with the fob, then the microswitches should be working properly. The console unlock switch wiring is in parallel with the alarm wiring (i.e. the wiring is spliced together).

    Do you get any reaction from the unlock switch?
     
    lanab likes this.
  4. lanab

    lanab Formula Junior

    Feb 21, 2016
    524
    Stockholm, Sweden
    Yes i can unlock/lock with the FOB.

    I swapped between the unlock and lock switch to be certain that there wasn't a problem with the switch, they both works in the lock position, but not unlock.
     
  5. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
    If the switch produces no clicking or cycling of the locks, then there must be a wiring issue between the switch and the window ECU.

    Check there is an earth on both black wires on the console unlock switch connector.
    Check continuity between the violet/white wire on the switch connector and pin 2M of the Door Locking ECU in the passenger footwell (You may have to remove the relay panel to get proper access to it). Removing the relay panel also allows access to the switch wiring.

    Wiring diagram here:

    5.2
    https://www.dropbox.com/t/rBvxT9P2Ww6rPaYQ

    2.7
    https://www.dropbox.com/t/qwRbpLYFcjxEJ6ee

    Sorry, I've forgotten in you have a 2.7 or 5.2
     
    lanab likes this.
  6. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,278
    CT
    Full Name:
    John Kreskovsky

    No Fobs on a 2.7. Still in the dark ages. :)
     
    Qavion likes this.
  7. lanab

    lanab Formula Junior

    Feb 21, 2016
    524
    Stockholm, Sweden
    I have a afterrnarket FOB
     
  8. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
    #33 Qavion, Dec 29, 2021
    Last edited: Dec 29, 2021
    Ooops.. I forgot that the immobiliser wiring on the 2.7 is only provisional. Plug 59302 exists (see diagram), but there is nothing on the other side of the plug (other than a jumper wire for the fuel pumps... not shown in the diagram)

    Hmmm.... Old electricians' rule... "If in doubt... go to the last modification".

    Anyway, check the basic wiring. If all seems normal, then figure out how the aftermarket fob interfaces with the car.
     
  9. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,278
    CT
    Full Name:
    John Kreskovsky
    That changes everything. :)
     
  10. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
    Sorry, my eyesight is fading.... Check pin 2, not pin 2M... Anyway, whatever pin the violet/white wire is attached to.
     
  11. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,536
    Sydney
    Full Name:
    Ian Riddell
    If it's any easier, check the console switch output at either of the door plugs. You should get an earth on pin 6 when you activate the unlock switch (momentarily).

    Image Unavailable, Please Login
    The male side of the plug (not shown) on the A pillar will be a mirror image. Careful you don't bend the pins removing the plug.
     

Share This Page