A hand-held field maintenance tool (200, fig 3) is brought into proximity of a field device 520, whereupon an operator of the hand-held tool couples the hand-held tool to a field device through a wireless (222, fig 3) or wired connection (238, fig 3). The operator navigates a user interface (260, fig 3) provided on a display to cause a remote system to inject a simulated control signal 526 into a control loop in order to force the field device to change state. The hand-held tool records a diagnostic result of the test and generates a report 550 which can be displayed 552 to the operator of the hand-held tool or stored 554 in the hand-held tool or a remote system. The test includes determining whether the field device is correctly connected or wired to the control loop and the response of the field device to the simulated control signal. The hand-held tool can have a positioning module (260, fig 3) which indicates to the operator when they are in visual or audible range of the field device where the operator c
