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:

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 (front), mode door motor, intake door motor, blower motor and A/C compressor are then controlled. The front air control is unitized with control mechanisms. When the various switches and temperature dials are operated, data is input to the front air control.

Diagnostic Procedure For A/C System (step 1):

Diagnostic Procedure For A/C System (Step 2):

DIAGNOSTIC PROCEDURE FOR A/C SYSTEM
SYMPTOM: A/C system does not come on.