I don't recall if the display is on the dimmer switch - its worth checking that hasn't been knocked.
ECU repairs and modifications for Suzukis http://www.rhinopower.org
2006 Jimny, 1.3 VVT, 2" lift, DD
2004 Ignis, 1.5 VVT, 4Grip
2000 Vitara 1.6 8V, Calmini 3+3, 33 MTs, 5:83R&Ps, remapped ECU
1986 SJ413K pick-up with G16B conversion