It started all with when I attached my battery with wrong polarity after replacing air filter. When I realised problem I viewed the forum and replaced blowen fuse of 30amps. I'm an electric engineer and got to know how easy to attach wrong polarity in cb500fa.
After battery connection, I turned on the bike and just after riding around a km pgmfi mil indicator turn on, I restarted bike and it didn't come after that.
After that I noticed that my radiator fan is not turning on. Whenever we start the motorcycle, fan turns on for 2 to 3 secs but mine is not turning on. I checked basic diagnostics like:
Supplying 12v directly to fan, it turns on means fan is OK.
Swapping fuel pump relay with fan, still fan is not starting when switching on but fuel pump relay turn on means relay is OK.
Fuse seems OK but still swapped it with spare fuse. (I don't have multimeter as of today, will get it tomorrow), still fan is off while starting.
Is there any other diagnostics, I can do. What could be problem?
Sorry for bad English. 😔