Help needed with Siemens S11868502 D SIM24 ECU component value/s

[johancraftech]

Foremost, I am not an ecu specialist. This ECU: Siemens S11868502 D SIM24 (Ford KA 1.3 Petrol) ended on my bench. It was previously worked on by an unknown technician. The only information I have at hand, is that the owner replaced the ignition coil as the latter caused one of the IGBT's in the ECU to short. The IGBT I can source and replace, but it seems that the previous technician removed 2 components (most probably resistors in a mini-melf package): see attached photo. It seems that schematics and/or board view files does not exist. If there are any ECU specialists that can assist in identifying the 2 removed components, I will really appreciate it.

[stj]

how do they connect to the fet?
and does the other fet have them?

[johancraftech]

how do they connect to the fet?
and does the other fet have them?

This is how R3 to R8 connect to the IGBT's (those on the board measure high resistance, they are obviously burnt due to Q1 being shorted, and no resistance colour code is visible anymore):

[stj]

hmm...
are they sensed at the fet side or is it just fusing?
if it's fusing only then calculate the current needed.
why 2 fets? is it a twin coil wasted spark system?

[johancraftech]

They are definitely sensed at the emitter side. No idea why 2 IGBT's and what type of coil.

[johancraftech]

Fixed 👍 and vehicle is running again. Received a donor unit with blown ASIC, but IGBT's and resistors were 100%. Replaced both IGBT's and 4 x 2 Ohm resistors (R3,R4,R7 & R8) from donor unit.