Thanks, I tried that and I took Connector to the negative terminal off and connected to the positive terminal.
I saw on the F150 forum a method to clear code 54 by shorting out the Diagnostic "Trouble Code Clear" Connector which is a gray connector under the glovebox...
I went to a Ford dealer because the wrench light came on twice and air bag light would sometimes come on. They said the RCM is not functioning properly. The sensor asy -A part Al1z 14b321 A needed to be replaced.
So I bought it from them and installed myself with the help from YouTube.
Now I...
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