Connect GDS to Data Link Connector (DLC).
Warm engine up to normal operating temperature.
Turn "OFF" electrical devices and A/C.
Monitor " A/C PRESSURE SENSOR " parameter on the GDS.
Specification : A/C "OFF" : 1200mV~1500mV
A/C " ON" : 1500mV~ 2400mV
Fig.1) Data at idle and aircon "OFF", Aircon pressure sensor output voltage is 1300mV.
Fig.2) Data at idle and aircon "ON". Aircon pressure sensor output voltage increases as aircon compressor operates.