GM Service Manual Online
For 1990-2009 cars only

HVAC Control Module Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selections

Description

Air Inlet Door Position

HVAC Motors

When you select Outside, the HVAC control module commands the recirculation actuator toward the outside air position. When you select Recirculation, the HVAC control module commands the recirculation actuator toward the recirculation position.

Blower Motor

Miscellaneous Test

When you select ON, the HVAC control module commands the blower motor relay ON. When you select OFF, the HVAC control module commands the blower motor relay OFF.

Driver Temp Door Position

HVAC Motors

When you select Cold, the HVAC control module commands the driver air temperature actuator to the full cold position. When you select Hot, the HVAC control module commands the actuator to the full hot position.

Mode Door Position

HVAC Motors

When you select A/C, the HVAC control module commands the mode actuator to the face position. When you select Defrost, the HVAC control module commands the actuator to the defrost position.

Passenger Temp Door Position

HVAC Motors

When you select Cold, the HVAC control module commands the passenger air temperature actuator to the full cold position. When you select Hot, the HVAC control module commands the actuator to the full hot position.