Component Inspection

■ Check A/C pressure sensor 

1. IG "OFF". Connect the GDS.
2. Connect the probe to A/C pressure sensor signal and select the oscilloscope in the menu.
3. Check the waveform while turning A/C switch "ON" and "OFF" with engine running "ON" and "OFF".

   Specification: 

   Pressure (KPa)	101.4 (14.7 psi)	390.9 (57 psi)	1723.7 (250 psi)	3031.6 (439 psi)	3206.1 (465 psi)
   Voltage (V)	0.5	0.87	2.57	4.24	4.46

   Fig 1: Screen Display - A/C Pressure Sensor Switch ON And OFF With Engine Running ON And OFF

   Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured waveform of A/C pressure sensor normal?

   YES 

   • Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Substitute with a known - good A/C pressure sensor and check for proper operation. If the problem is corrected, replace A/C pressure sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.