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Home >> Lexus >> 1995 >> SC 300 L6-3.0L (2JZ-GE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Component Tests and General Diagnostics >> Communication Line With Cooling Fan ECU

Communication Line With Cooling Fan ECU

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 Tr1 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.

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