Power Supply and Ground Circuit For Front Air Control

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 intake sensor, temperature dial, and various switches needed for air conditioner operation. The air mix door motor, mode door motor, intake door motor, blower motor and compressor are then controlled.

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.