Trailer HALDEX Modulator Valve ECU Replaced and Reprogrammed

Today we had a Haldex modulator valve ECU to replace and reprogramme on a trailer with an ABS fault. It was showing a voltage of 35V which was causing an active ABS fault and active supply voltage faults in the ECU. We had a correct voltage of 25v at the front of the trailer so we tested the wiring by laying a new power cable directly to the ECU in a previous video and we still had a voltage issue. So we returned today with a replacement valve and got it swapped.
#hgv #truck #trailer #trucking #mechanic #business #selfemployed #hardwork