A nonsense mutation in the leptin gene that results in a stop codon and lack of leptin production was first observed in mice in 1950. In the mouse gene, arginine-105 is encoded by CGA and only requires one nucleotide change to create the stop codon TGA.
The fuel pump relay, located deep inside the TIPM, is the most common relay to fail since it's powered on 100% of the time while you're driving. You likely found this website because your dealer wants to change your fuel pump ($600+) or TIPM ($1000+).
  the PCM relay is mounted above the PCM in the passenger kick panel, take a flash light and look good ...it should be mounted to the white plastic holder for the compute â¦ r.4 people found this useful.n a 2001 Ford Ranger: In the Power Distribution Box (which is  live ) located in the engine compartment, on the drivers side (the # 54 relay is the relay for the Power â¦ train Control Module / PCM). + 1 other found this useful. Chuck Grantham.