VW Golf mk4 fan control module replacement

A/C not working? Compressor not engaging? The fan control module (FCM) could be your problem. I was getting very low voltage at the compressor (1.75v), which is not enough to engage the clutch. All of the fuses were good, so I decided to replace the FCM since it was 21 years old and I had never replaced it before. Upon doing so, I noticed some corrosion on the wires at the 14 pin connector. I then had to locate a pigtail connector and then solder all 13 wires to the existing wiring and it worked! I now have cold A/C and the system works as it should. Make sure you purchase a good quality FCM, preferably VW, because there are some cheaper knock-offs out there that will cause you more problems. I hope that this video helps you and feel free to comment below. OEM Fan control module 1J0919506K: 14pin connector 6X0973717: Soldering iron kit: Video on the ground wires under battery tray: