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Home >> Chevrolet >> 2006 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 587 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> Scan Tool Output Controls

Scan Tool Output Controls

WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
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 Recirc, 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 panel 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.
ECM Scan Tool Output Controls

Scan Tool Output Control Additional Menu Selections Description
A/C Relay Engine Output Controls The engine must be running and the ECM must receive an A/C request from the HVAC control module in order to enable the output control. The ECM de-energizes the A/C compressor clutch relay when you select OFF. The relay remains de-energized until you select ON.