AC/Heater blower motor does not work on high.

[Bandit130]

Searched and did not find this issue. The blower motor shuts off when switched to high. Works on all other speeds. Not sure if it switch, relay, or the motor. Suddenly stopped yesterday while using AC. Changed to Bi-level to use the fan speeds, except high.

I did run a jumper from B+ to blower motor, and motor did run on high. Removed connectors from relay and resistor and reset both and no change. I will remove connectors and clean contacts tomorrow and I am planning to have the resistor tested by a co-worker that is an electronics engineer to see if it is still good. May need a new resistor or relay, not sure yet.