Hitachi Automotive supplies engine control units to Nissan. Further up the chain, an unnamed supplier hasn't been able to fulfill Hitachi's need for a custom integrated circuit, so Hitachi hasn't been able to fulfill Nissan's orders for ECUs. That has put Nissan in the potential position of needing to halt Altima and Sentra production for three days, July 14-16, at factories in Tennessee and Mexico.
The Altima and Sentra would take the fall first as they're Nissan's volume models. Hitachi's delay has already interrupted production in Japan, but thus far the issue has only involved 15,000 units. A U.S. and Mexico plant stoppage of two company staples would bite more deeply into Nissan's combined 1.2-million-unit production capacity. It's suspected that Subaru and perhaps Honda are also affected by the ECU delay.
[Source: Automotive News – Sub. Req.]