My a/c will come on if I have the blower switch in 1 speed. The compressed come on and cooling fan for condenser works, but the blower fan seems not to be running. As soon as I switch the a higher blower speed the compresser kicks off and the lights on the a/c controllers go out and stop cooling. Has any one had this problem? I am a tech but this is my first Japanese truck and I had never seen an a/c system do this. Hope someone can help.