We present simulations of pump/probe photoionization experiments on a diatomic molecule with two nonadiabatically coupled electronic states. The NaI molecule is used as an example. The nuclear wave packet dynamics in two coupled electronic states is mapped into the kinetic energy distribution of photoelectrons which are recorded at different delay times between the pump pulse, preparing the initial wave packet and the ionizing probe pulse. In this way details of the indirect fragmentation process can be observed in real time.