Hi guys, I still have my engine management light, today my auto electrician was trying to trace the wire for the knock sensor as he has diagnosed there is no voltage from the engine knock sensor. He was unable to locate the engine ecu, any ideas anyone? I pointed him in the direction of the center console but he said that was the srs ecu, not the right one. Any help is much appreciated the car is a 2.4 2003 cl9.