I'll qualify this to say all of my comments are based on looking at the schematics...


Pin 4 of connector X8582 seems distinctly separate from connection point X2377


I am going to guess that X23778 may in fact be inside a wrapped bundle of wires. Consider unwrapping the bundle to try and see if something is hidden.



ALSO!! you may not find a solid short just ohm-ing things. There MAY be a circuit that isnt ';active' until the car is powered on, but once powered on the circuit closes and then a bad sensor/.actuator causes the short/fuse blow. Odd but possible. Look at this:


https://www.newtis.info/tisv2/a/en/e...lation/cuMAnjp


See the 20A supply from F02 goes to the pre-heater in the o2 sensor. The DME actually 'controls' this by grounding the other end of it at pin 3. When the car is off, pin3 is not grounded- it is only when the DME is on and decides to run the preheat that it grounds that line. At which point the pre-heater then pulls current through F02. if that o2 is bad it would then pop the fuse. My point is that static checking might be confusing at first (hence I posted all the little 'sub-diagrams' above)|



GL!