Bought 04 1/2 LLY truck. Sat for 1 week, no start, U0105 DTC. Blew EDU fuse immediately. Sent FICM to be repaired, declared unrepairable (4 layer board burned all the way through by leaking electrolytic capacitor). Checked for harness damage at FICM tiedown point, found and repaired minor damage to one wire, checked for power at FICM connectors pins 3 & 118, OK, checked for grounds at pins 2& 114, OK. Installed 'new' Bosch rebuilt FICM, engine
started and ran perfectly for 15 seconds, stalled, DTC U0105. Checked injectors for grounds and shorts:1,2,& 5, 0.5 ohms,3,4,6,7,&8 0.4 ohms. Checked control lines on pins 44,45,47,48,65,64,66,&67 for grounds,OK;also checked CAN lines on 90&91 and engine speed input line on 94 for grounds, none found (used 10 megohm Fluke DVOM). Installed second newly reconditioned Bosch FICM. This one would not start at all, gave DTC U0105.Seems highly unlikely to me that I would have even one bad Bosch unit, let alone two. Sent first reconditioned Bosch FICM to be repaired, was told by repair tech that 'the chip' was bad, he thought by a shorted or grounded injector, even though I didn't see it with my meter. What do you think? Thank you, Hunter***@******.***,***-***-****.