Communication Line With Cooling Fan ECU

CIRCUIT DESCRIPTION

When the magnetic clutch relay is ON and the required outlet air temp. is below a predetermined value, the A/C Control assembly turns ON Tr 1 inside the ECU. (Terminal voltage at the CFAN terminal is almost 0 V). As a result, the cooling fan ECU increases the speed of the cooling fan as required and increases the cooling performance of the condenser.




WIRING DIAGRAM

Step 1:

Step 2:

Step 3:

INSPECTION PROCEDURE