Jump to content

Leaderboard

Popular Content

Showing content with the highest reputation on 06/24/2021 in Posts

  1. Hi Dan There are 2 relays to check/change one is the Fuel Pump Relay the second is the Power Relay Lights, you say you have changed to BMW angel eyes, did you change the complete headlamp unit? Just changing the bulbs to LED may give a bulb failure warning unless they are fitted with a resistor (most are) but wouldn't have an effect on the FRM. The FRM is a control unit not a power supply it controls many systems and acts as a confirmation gateway for others. Getting it working will eliminate a few more faults, often fault codes cant be reset while there is a fault in an associated unit. As you have a non starting car I would pull the FRM, contact one of the repairers and send it off for checking and repair. If you can stick with the original you avoid all the re-programming issues. If it cant be repaired then a replacement will be needed, BMW and some Specialists will tell you that "Only BMW can program a unit" Well they would I suppose. They are wrong and you already have the kit to do it (just another School day) Dave
    1 point
  2. Morning Dan The phrase "All the Gear but no idea" springs to mind 🤣 Still the other old phrase is "Every day is a school day" so opportunity to learn First your FRM footwell control unit seems a consistent Fault it could well be causing the knock on faults with DSC Radio and many other parts. This where you have 2 courses of action (1) talk to ECU Testing or BBA REMAN both companies repair control units for a living if your FRM is repairable it is a simple job send it off then put it back. If it can't be repaired then I would use Google to search for a replacement with the correct part number. Now the Fun Part a replacement unit will need registering to your chassis or you will get a tamper dot by the mileage, the car will run fine without registering just the dot. Second your DDE fault is consistent with no comms to the Fuel pump control unit. Once the FRM has been changed check the fault codes again to see if the Fuel Control Unit can be cleared. If it has all good. If not then you need to investigate the fuel supply system further With the wiring diagrams have you read the Functional Description (next Tab) it may help you understand what your looking at. Dave
    1 point
  3. Morning Dan When you say you removed the Module and checked it, how did you check it? A visual check won't do it, you need a good multi-meter and preferably an oscilloscope. Inside the module there are printed circuit boards easily damaged by water ingress. One 10 pence diode failure kills the whole unit. Fuses are a simple visual check Relays a little different but can be checked with a meter and a 12v supply. As the relays are cheap I would change them it could save a lot of searching My own FRM/FCM failed earlier this year, first symptoms were intermittent faults then total failure and no communication with the unit the knock on effects were to my Climate Control unit. I changed the FRM/FCM and registered it to my chassis all good for a couple of days. The warm weather arrived and I discovered the Climate Control unit was fried too. So had to change that as well. Your JBE still needs checking as well Dave
    1 point
  4. Morning Daniel The FRM is the footwell control module, it has several functions to control but as many other control units also acts as a gateway for communication. The JBE (Junction Box Electronics) is more important there are 3 types 1 for cars with Kline comms and 2 for cars with Dcan comms. You need to first check www.realoem.com and find out the part number for your car. Then check the unit in your car is the correct unit for your chassis the same applies to the FRM. You seem to have ISTA up and running both units will require coding to your Vin Dave
    1 point
×
×
  • Create New...

Forums


News


Membership