Automatic Air Conditioner

Power Supply and Ground Circuit for Front Air Control

SYMPTOM:
- A/C system does not come on.




INSPECTION FLOW

COMPONENT DESCRIPTION




FRONT AIR CONTROL
The front air control has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The air mix door motor, mode door motor, intake door motor, blower motor and compressor are then controlled.

Signals from various switches and Potentio Temperature Control (PTC) are directly entered into front air control.

POTENTIO TEMPERATURE CONTROL (PTC)
The PTC is built into the front air control.

Diagnostic Procedure:

DIAGNOSTIC PROCEDURE

SYMPTOM:
- A/C system does not come on.