Ride Firm light blinking.

Can anyone tell what it means when my ride firm light blinks when it is in the AUTO position?

From the FAQ's

"Programmed Ride Control Problems - by Jeff Korn

Question: The Programmed Ride Control on my 87-88 Turbo Coupe doesn’t seem to be working correctly and / or the green PRC FIRM light is flashing.

Answer: If the PRC computer detects a fault in the system, it will flash the FIRM light. The PRC computer can be put into a self diagnostic mode just like the EEC can. To enter the PRC self test mode, do this: Remove the ash tray and locate the two terminal connector right under the ash tray. Fabricate a wire, like a bent paper clip, and jumper the two terminals on the connector. Be sure the PRC switch is set in the AUTO RIDE position, and start the car. Within 20 seconds of starting the car, remove the jumper wire, and watch the PRC FIRM light. Count the blinks of the firm light. The light will blink the same code 4 times, once every 9 seconds. Here is a brief explanation of the codes:

Code 1- Fault in LH rear activator circuit, 2 - Fault in RH rear activator circuit, 3 - Fault in RH front activator circuit, 4 - Fault in LH front activator circuit, 5 – Short in soft shock relay control, 7 – Replace PRC computer, 13 – Short in hard relay control, 14 – Fault in relay control circuit, 6 – no problem yet…. Further diagnostic work needed.

The Ford shop manual contains a detailed troubleshooting procedure for each code, which is impractical to reproduce here. If specific information is needed, ask on the message board, and someone should be able to give you the troubleshooting details. "

HTH

Dusty