September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Component Inspection

Check A/C pressure sensor

IG "OFF" and connect the GDS.
Connect the probe to A/C pressure sensor signal and select the oscilloscope in the menu.

Check the waveform with turning on and off a/c switch after engine start.

Specification:

PRESSURE SPECIFICATION

Pressure (kPa)	101.4	390.9	1723.7	3031.6	3206.1
Voltage (V)	0.5	0.87	2.57	4.24	4.46

Fig 1: Screen Display - A/C Pressure Sensor Waveform

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Measuring A/C Pressure Sensor Waveform

Courtesy of KIA MOTORS AMERICA, INC.

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.
  NOTE: There is a memory reset function on GDS that can erase optional parts automatically detected and memorized by PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others
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.