Section 33 (A/C-Heater System - Manual): Description

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article in RESTRAINTS.

The manual A/C-heater system uses 3 rotary switches to control A/C-heater functions. The electric actuators quietly control blend-air, mode and air inlet/recirculate doors. Air is circulated through 5 different front outlets and one rear outlet.

When A/C switch is on, a signal is sent to Body Control Module (BCM). BCM requests A/C operation from Powertrain Control Module (PCM). Response is based on control knob positions and evaporator temperature being within parameters.

A/C-heater system can be checked without pressure gauges. A/C system functions can be checked using Chrysler's Diagnostic Readout Box (DRB). Vehicle A/C functional test can also be performed using built in self-diagnostics. See FUNCTIONAL TEST under TROUBLE SHOOTING. Pressure transducer replaces high pressure, low pressure and fan control switches. BCM drives and monitors control door positions based on information received from other vehicle systems, sensors and switches.