B8 s4 wont start after engine wiring harness change
#1
B8 s4 wont start after engine wiring harness change
Hi guys hopefully someone can help me out,
I recently picked up a 2010 audi s4 with the 3.0 supercharged engine. The car had a small engine fire near the oil filter, so i replaced the entire engine wiring harness both of the internal harness' and all damaged hoses and sensors but the wiring harness which i had gotten was off a 2013 s4 all the connectors and everything fits in except one 2 pin connector by the coolant hoses in the front by the supercharger and the rack and pinon connector is different but i dont think these have any affect on the car not wanting to start.
Everything inside works mmi, dash comes on, sunroof, windows etc. but the car will not start. I checked all the relays all good, but 2 fuses have no power the 14th and 15th fuse on the engine fuse box one is a 20 amp other is a 5 amp if i short 12v power to the 5 amp (14th position fuse) i am able to start the car and it runs but i am unable to turn it off with the start stop switch but rather i have to disconnect the power from the fuse.
I also am getting an ignition switch error with a crossed out key on the dash but i was thinking if this was a immo issue shouldnt the car still start for a few seconds and then shut down ? The car doesnt want to turn over what so ever unless power is shorted to fuse 14.
Its almost as if the computer isnt getting power ? Any input would be appreciated.
I recently picked up a 2010 audi s4 with the 3.0 supercharged engine. The car had a small engine fire near the oil filter, so i replaced the entire engine wiring harness both of the internal harness' and all damaged hoses and sensors but the wiring harness which i had gotten was off a 2013 s4 all the connectors and everything fits in except one 2 pin connector by the coolant hoses in the front by the supercharger and the rack and pinon connector is different but i dont think these have any affect on the car not wanting to start.
Everything inside works mmi, dash comes on, sunroof, windows etc. but the car will not start. I checked all the relays all good, but 2 fuses have no power the 14th and 15th fuse on the engine fuse box one is a 20 amp other is a 5 amp if i short 12v power to the 5 amp (14th position fuse) i am able to start the car and it runs but i am unable to turn it off with the start stop switch but rather i have to disconnect the power from the fuse.
I also am getting an ignition switch error with a crossed out key on the dash but i was thinking if this was a immo issue shouldnt the car still start for a few seconds and then shut down ? The car doesnt want to turn over what so ever unless power is shorted to fuse 14.
Its almost as if the computer isnt getting power ? Any input would be appreciated.
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