A/C pressure transducer consists of piezoelectric element and it detects aircon refrigerant pressure. Piezoeletric type is more advantageous to obtain linear data of pressure than existing switch type. Thus, optimum control of aircon compressor and fan is realized and improved fuel efficiency follows with it.
P0532 is set when the voltage below 0.3V - minimum voltage of A/C pressure transducer signal - is detected for more than 0.6 sec.. This code is due to open in power circuit or short to ground in signal circuit of A/C pressure transducer.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● Voltage monitoring | ● A/C pressure transducer circuit ● A/C pressure transducer component | ||
Enable Conditions | ● Engine run | |||
Threshold Value | ● When output voltage is below the minimum value (below 300mV) | |||
Diagnostic Time | ● 600ms | |||
Fail Safe | Fuel Cut | NO | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
Output signal(voltage) changes in accordance with the amount of refrigerant and the change of weather. Check if normal pressure change occurs in accordance with aircon compressor operation at normal pressure range shown in "Specification".
