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BMW F20 engine N13 #FRONTELECTRONICMODULE #INTEGRATEDSUPPLYMODULE #ENGINECONTROLUNIT #S0392 #DME #FEM #IVM #CARNOTSTART #BMWF20 #BMWN13 How far I went to understand the reason why the car doesn't start or crank? Is the reason; dead DME, FEM unit, battery, short circuit or integrated supply module? 00:00 Intro The car worked great about two weeks after the timing chain change! The engine does not crank or start Various check control messages will be displayed Driving stabilisation failure Flat Tyre Monitor (RPA) failure Starter / ignition failure 00:55 Fault diagnosis with ISTA-D A total of 65 fault codes !! Main fault code: S0392 No communication possible with engine electronics Other modules have CAN faults stored due to missing messages from the DME Let's look a little more closely fault codes Main suspect: power supply for DME. It would appear that the DME is not receiving power Or the DME itself is faulty! Reset engine control unit DME Check voltage supply, integrated supply module The engine control unit is not responding 04:44 Check all fuses from the trunk, engine compartment, REM unit and also FEM unit Replacing the battery did not help with this problem! 05:24 Diagnosis Integrated supply module Let's take a closer look at the Integrated supply module, It supplies power for DME Check that the relays of the Integrated supply module are in ok Measure resictances from relays from integrated supply module: DME main RELAY, Valvetronic RELAY and RELAY for the ignition and fuel injection Resictances should be approximately 230 Ohm 06:16 Dismantle the Integrated supply module check the fuses from inside the power distribution box Dismantle with heat gun and sharp knives Carefully! Do not cut too deep to avoid damaging the circuit board! The power distribution box contains fuses and relays Normally, If one of the fuses or one of the relays is faulty, the complete power distribution box must be replaced They say that fuses and relays cannot be replaced separately! Remove the circuit board from the housing 08:48 - Remove FEM front electronic module Liquid found on the FEM unit connector ?! Let's take a closer look at the FEM module! Remove all connectors and loosen red lock Unlock top positive battery cable connector and disconnect battery positive lead Release bolt and remove control unit 09:52 Dismantle FEM unit Remove fuses and do not mess up the order of the fuses! The protective film on the circuit board has melted at one point PIN 1 is for engine start signal from FEM to DME There's green liquid in plug connector! FEM unit back in place! 14:10 Measure voltages from components and sensors Measure the voltage from the DME engine control unit body At this point I started to doubt the DME unit, 15:48 Dismantle engine control unit At this point, I decided to order a used DME motor control unit! Let’s continue with the next episode! Stay tuned! -- Watch this video! If you liked this video, press the LIKE BUTTON, SUBSCRIBE channel, leave COMMENTS and SHARE video! By doing so, you will be able to support this Youtube-channel! Thank you! I appreciate it! 👍 Watch my previous videos on Youtube related to the maintenance and diagnose of BMW F20 with engine N13! See the whole series from here: • BMW F20 - Diagnosis and maintanence -- My purpose is to encourage people to do things themselves! Plus, this is a nice hobby for myself and at the same time I have the opportunity to save a lot of money by doing all the maintenance myself! I’m not a professional with cars or motorcycles, I just want to learn how to do things myself. If you do this service yourself, always check the correct instructions in the official service manuals. This is just my way of doing it! Jani Voutilainen You can follow me also in: INSTAGRAM: / voutilainenjani FACEBOOK: / jani.voutilainen YOUTUBE: / janivoutilainen Thanks for Music: Hybrid Cinematic Gaming Cyberpunk | URU by Alex-Productions | / @alexproductionsnocopyright Music promoted by https://www.free-stock-music.com Creative Commons Attribution 3.0 Unported License https://creativecommons.org/licenses/... and Cinematic Ambient Beat | STEPS by Alex-Productions | / @alexproductionsnocopyright Music promoted by https://www.free-stock-music.com Creative Commons Attribution 3.0 Unported License https://creativecommons.org/licenses/...