10624409-10624407-10624419-10624296-10624340-10624405-10624413

Component Location

General Description

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.

DTC Description

P0533 is set when the voltage above 4700mV - maximum voltage of A/C pressure transducer signal - is detected for more than 0.6 sec.. This code is due to open or short in signal or ground circuit of A/C pressure transducer.

DTC Detecting Condition

Item	Detecting Condition		Possible Cause
DTC Strategy	• Voltage monitoring		• A/C pressure transducer circuit • A/C pressure transducer component
Enable Conditions	• IG KEY "ON"
Threshold Value	• When output signal is above the maximum value (above 4700mV )
Diagnostic Time	• 600ms.
Fail Safe	Fuel cut	NO
	EGR Off	NO
	Fuel Limit	NO
	MIL	NO

Specification

Diagnostic Circuit Diagram

Signal Waveform

Fig.1) Waveform of A/C pressure transducer in accordance with aircon operation.(aircon compressor operation)

note

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".