Hello, At my first attempt to start after winter storage it seems that I have an immobilizer issue - the car turns over normally but will not fire. The immobilizer code light stays on and despite everything I have tried it will not go off. I have read the August 15, 2017 post by Eric C 'F430 Immobilizer Problem. Please help!' and tried everything suggested. I have also attempted the 'Emergency Starting' procedure as outlined in the owners manual with no luck. I cannot proceed past the first step of holding the accelerator pedal down until the OBD warning light goes off. I also tried the trick I found on YouTube where the immobilizer antenna is moved outward, that makes no difference. I spoke with my Ferrari dealer (two hours away) and the service department is booked until mid-August so I will be flat bedding it to an Independent Shop (also two hours away) in the next few days. Any thoughts or advice that you may have with this issue are most welcome. Thank you. Regards, Les
Have a look under the dash by the steering wheel as i think there is an immobiliser box of tricks under there. Take it out and spray contacts with contact cleaner. I assume you have turned off the battery, what volts are you getting with battery on.
I looked under the dash but I cannot identify what you are referring to, can you provide more detail? I have tried turning the battery off. The battery is only two years old and has lots of power. I have not checked the voltage at the battery but will do. What voltage should I be getting? Thank you for the response.
Have you got 12 volts plus, measure at the power socket in the central consol Mine is a uk rhd car- if you get your head in the drivers footwell and look upwards to behind where the ignotion switch is, you will see a blue box about 3 inch square. I think that has something to do with immobiliser
Yes, I have located it. I also checked the voltage at the power socket and I have 12.1 volts. Thank you.
I assume you mean this one: https://www.ferrarichat.com/forum/threads/f430-immobilizer-problem-please-help.558426/ As far as I can see, there are two ways you can approach the problem. Fix the immobiliser problem or reflash the Motronics ECUs to stop the immobiliser affecting the engine. However, I'm not 100% sure if the latter will necessarily get rid of the immobiliser symbol on the dash. Experts? Looking at the wiring diagrams, the blue Immobiliser ECU under the dash is responsible for illuminating the light: See pin 2 on Immobiliser plug B. Image Unavailable, Please Login As you can see from the somewhat blurry diagram, there are lots of fuses and relays in the system (including the internal "Tyco" relays mentioned in the other message thread). You say you have power at the blue Immobiliser ECU, but what about ignition power on pin 8 (green wire, plug B) with the ignition key on? Ignition key power comes from fuse PDF13 (behind the right hand seat). Live battery power should be on pin 3 (pink/red wire) on plug B. Battery power comes from fuse PDF14 (also behind the right hand seat). Here's plug B with pin numbers (as seen from the contact side, not the wire side). PDR1 allows a coded signal to go to the RH Motronic ECU enable the engine. Image Unavailable, Please Login Plug "A" is the antenna plug. Apart from checking power, I would try percussing relay PDR 1 to see if that allows start. I don't know if this is a special relay (that can't be interchanged with others). The WSM doesn't show an amp rating for this relay. Am I correct in thinking that, normally, the engine will crank, but not start on the F430 if the immobiliser is armed?
Probably a good idea to replace all the relays ~$65. Scuding swiss mentioned really crazy stuff that could happen with PSR7 going bad.
Have you checked relay PDR1. + fuse PDF12. These are part of the immobiliser supply. Both in block C behind the seats. Assuming fuse is ok, look for a relay you can swap over. The car only has 3 different relays so should be easy to find a swap
Does the disable procedure involve the removal of the Immobiliser ECU or any immobiliser fuses/relays on the F430?
So PDR1 is just a regular relay? Unlike the other relays, the WSM doesn’t list an amperage value for this relay. I thought there might be something special about it as it is carrying the coded signal between the Immo ECU and the RH Motronic ECU or data between the RH Motronic ECU and the OBD port, not just a dc voltage.
Sorry, I misread your message. I thought you said you had checked power at the Immo ECU. You actually said you had power at the centre console. So one of the Immo fuses may be blown… although the fuses do seem to power other devices… so they would be inoperative, too. I see splices in the wiring. I’m currently trying to figure out what else is affected by these fuses.
a relay on here is just a dc switch which supplies the power to a system, the relay will have a number or a diagram on it, just swap with one the same and see if it makes any difference- i dont think it will but its one more thingyou know is ok
A relay on where? If PDR1 is a power relay, what is sending power to what? Here is another diagram of PDR1 Image Unavailable, Please Login
Look at the hand book, it lists the fuse and the relay related to the immobiliser. Where we go after proving these i am not sure Nice diagram, where did u find it I see fuses pdf 13+14 are also alarm/ immob. I had missed that
Long story... I traded some diagrams with a fellow FChatter. He gave me a very expensive set of F430 Scud (black and white) pdf diagrams and, in exchange, I gave him a set of my coloured 512TR diagrams and promised to make him a set of coloured F430 diagrams. Unfortunately, the original Scud diagrams had a few missing pages and dozens of typical OEM Ferrari diagram errors. I'm still sorting them out a year later. The original F430 diagrams are of limited value because there are so many errors in them, but they are useful for quick overviews of the systems. I've incorporated the Immobiliser ECU into my latest Instrument diagram. https://www.dropbox.com/t/87j9taiMcQO0dntj Note that fuse PDF13 also supplies ignition power to something in the steering wheel.
The handbook lists PDR1 as a "BOSCH: Immobilizer (special BOSCH switch)". It uses regular fuse power for the coil, but I don't think dc power is going through the relay switched contacts. The pin on the Immobiliser ECU attached to the relay is labelled W-Line" and something else too small/blurry to read. To me that sounds like data of some description, not power. Image Unavailable, Please Login
The drawing is showing 2 off right hand ECUs E006. The relay looks to be 5 prongs and in present position 30 is connected to 87A. Which is RH ecu to immob, but not to LH ecu. That would be 30 to 87 The relay is switching contacts to the immob box of tricks so no harm in swapping to see if it clears immob block
FYI a K-Line is a simple 0-12V bus and would work if passed through a normal relay. The usual fix for these issues is to remove the the immo box connectors, and reinsert them. Anything beyond that will require some diagnosis - it could be the immo box has a problem, or somehow the LH side ECU has become unpaired.
