ok im having some major ******* problems with my car not getting any spark. i pull the ecu out after not getting any volts at the brown/white wire at the pressure sensor. i noticed on the 10 pin emission pin on the ecu was missing the b/w wire, it was corroded off, i cannot seem to see in the wiring diagrams what exactly this wire does. anyhow as i was putting the ecu back in to do one last test this wire that was corroded off touches the ecu which was grounded and bam a spark and then my dome lights went out. what caused this? does the ecu control the dome lights or is that another computer? thanks in advance

christopher

 

ok thanks to some searching i found out it blew the room fuse and not the illumination fuse so my interior lights now work.... now does anybody know what that b/w wire was for and would it cause no spark?