TROUBLESHOOTING / D r. ZX DATA DOWNLOAD TO ECM After starting Dr. ZX, push Select Controller. Push Engine C/U. Push Start. To the lower T1V7-05-03-001 T1V7-05-03-009 T1V7-05-03-011 Function Selection Screen Controller Selection Screen Title Screen Push OK. Push Special Function. Push Data Download To ECM. To the lower T1V7-05-03-010 Engine Controller Screen T1V7-05-03-130 Main Menu Screen Main Menu Screen T1V7-05-03-180 Special Function Setup Screen Push Write . Push ESC to return to the Special Function Setup Screen. It takes 10 to 60 sec. for communication. Push Next. T1V7-05-03-183 T1V7-05-03-184 T1V7-05-03-181 T5-3-62 To the next page