Code 14 (Ignition Signal Problem)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1990 Toyota Pickup, 1990 Toyota Cab & Chassis, 1990 Toyota 4Runner, 1989 Toyota Pickup, and 1989 Toyota Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
ECU will store trouble code No. 14 in memory if it does not receive "IGF" (ignition detection) signal 6-8 times in succession.