Programmer Description. Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Programmer Description

The heater and A/C programmer contains a microprocessor that controls the electronic A/C system. The programmer receives electrical signals from the following components:

•	The heater

•	The A/C control

•	The sun load sensors

•	The ambient temperature sensor

•	The inside temperature sensor

•	The blower control module

•	The powertrain control module

•	The mode selector switch

•	The actuators

A microprocessor in the programmer processes the signals. The microprocessor then sends commands to the system components that control the following elements:

•	The A/C compressor clutch operation

•	The air intake location

•	The air discharge location

•	The air discharge temperature

•	The blower speed

The heater and A/C programmer also performs self-diagnosis functions for the electronic A/C system. When the system diagnostic mode is activated through a scan tool, these faults are displayed as a numeric diagnostic trouble code (DTC).