Possible Causes
REAR FAN SENSE SUPPLY CIRCUIT SHORTED TO VOLTAGE
AUTOMATIC TEMPERATURE CONTROL (ATC)
REAR FAN SENSE CIRCUIT SHORTED TO VOLTAGE
AUTOMATIC TEMPERATURE CONTROL (ATC)
REAR FAN SENSE CIRCUIT OPEN
AUTOMATIC TEMPERATURE CONTROL (ATC)
REAR FAN SENSE SUPPLY CIRCUIT SHORTED TO REAR FAN SENSE CIRCUIT
REAR FAN SENSE RETURN CIRCUIT OPEN
REAR BOOSTER FAN REAR CONTROL SWITCH
AUTOMATIC TEMPERATURE CONTROL (ATC)