R32 ECU trouble

[weikleenget]

Hi all, finally fixed my fuel cut issue it was a bad AFM, then I swapped the ECU the car came with (Mines tune) with a stock one. Turned the ignition on and the fuel pump primed but no dash lights or gauges worked (except fuel qty). Car started and ran poorly. Disconnected battery again and swapped back to the Mines ECU, same issue. I’m guessing a relay or fuse blew so I checked the ones which seemed relevant, fuse #7 and #23 tested fine. Any clues? I didn’t check all the fuses or any relays. Thanks.

[GTSBoy]

Almost none of the gauges care what the ECU thinks (only the tacho receives input from the ECU).....so your dash problem is not indicative of an ECU problem. Almost certainly blew the appropriate fuse for the dash.

If the ECU is also having a power problem, then look to the ECCS relay as a possible cause.