B0413 GMC - Temperature Control 1 Feedback Circuit
Tech notesDTC B0413 02 - Temperature Control 1 Feedback Circuit Short to Ground
DTC B0413 05 - Temperature Control 1 Feedback Circuit Short to Battery or Open
DTC B0413 61 - Temperature Control 1 Feedback Circuit Actuator Stuck Open
B0413 Gmc DescriptionThe Heating, Ventilation, and Air Conditioning (HVAC) control module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of an electric motor and a potentiometer. The module supplies a low reference and 5-volt reference source voltage to the potentiometer. The HVAC control module monitors the voltage drop across the potentiometer on the door position signal circuit. When the actuator shaft rotates, the voltage on the door position signal circuit changes. The control circuit uses either a 0, 2.5 or 5-volt signal to command the actuator movement. When the actuator is at rest, the control circuit value is 2.5 volts. A 0 or 5-volt control signal commands the actuator movement in opposite directions.
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