Operation CHARM: Car repair manuals for everyone.

Power Supply and Ground Circuit For Front Air Control

POWER SUPPLY AND GROUND CIRCUIT FOR FRONT AIR CONTROL

Description

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 motors, 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.

Component Function Check

COMPONENT INSPECTION
SYMPTOM: A/C system does not come on.

INSPECTION FLOW

Step 1-4:






Diagnosis Procedure

DIAGNOSIS PROCEDURE FOR A/C SYSTEM




SYMPTOM: A/C system does not come on.

Step 1-2: