Scan Tool Output Controls

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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 Selection(s)	Description
A/C Request	Output Control	The HVAC control module sends out a A/C request signal to turn on the A/C compressor when you select ON. The request signal should stay active until commanded OFF.
Blower Motor	Output Control	The HVAC control module commands the blower motor on to maximum speed when you select ON. The HVAC control module commands the blower motor to low speed when you select OFF.
Defrost Mode	Miscellaneous Test	IMPORTANT: You must exit the Defrost Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into defrost mode.
Heater Mode	Miscellaneous Test	IMPORTANT: You must exit the Heater Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into heater mode.
Left Mix Motor	HVAC Motors	The HVAC control module commands the left air temperature actuator towards 198 counts when you select ON. The HVAC control module commands the left air temperature actuator towards 0 counts when commanded OFF.
Recirculation Door	HVAC Motors	The HVAC control module commands the air inlet door to the recirculation position when you select ON. The HVAC control module commands the air inlet door to the ambient air position when you select OFF.
Right Mix Motor	HVAC Motors	The HVAC control module commands the right air temperature actuator towards 0 counts when you select ON. The HVAC control module commands the right air temperature actuator towards 195 counts when you select OFF.
Vent Mode	Miscellaneous Test	IMPORTANT: You must exit the Vent Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into vent mode.

PCM Scan Tool Output Controls

Scan Tool Output Control	Additional Menu Selection(s)	Description
A/C Relay	Engine Output Controls	The PCM energizes the A/C compressor clutch relay when you select ON. The A/C compressor clutch should remain engaged until commanded OFF.