Transmission Control Indicator Lamp (TCIL)
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The transmission control indicator lamp (TCIL) is located in the instrument panel and is labeled O/D OFF. It is illuminated in conjunction with the transmission control switch (TCS).
The TCIL will flash if the electronic pressure control (EPC) solenoid circuit is open, shorted to battery, ground or a fault has been detected in a monitored sensor used for transmission operation.