Diagnostic function for brushless blower motor

A method for monitoring the performance of a motor for a blower unit positioned in a vehicle, the method comprising:

• sensing one or more physical parameters of the motor by way of one or more sensors located at the motor;
• diagnosing, by a blower motor control module, the motor based on predefined criteria and the one or more physical parameters sensed by the sensors;
• identifying, by the blower motor control module, a performance mode from among a plurality of modes based on the diagnosis, wherein the plurality of modes are predefined and stored in the blower motor control module, wherein the plurality of modes include a motor failure mode, a motor no failure mode, and a warning mode in which the motor is under specific characteristics that can or cannot result in motor failure;
• determining, by the blower motor control module, a mode message based on a signal code protocol, wherein the mode message is indicative of the performance mode identified and the signal code protocol associates each of the plurality of modes with a different coded signal;
• and
• outputting, by the blower motor control module, a diagnostic signal that includes the mode message to a climate control module located in the vehicle separate from the motor.