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)

1

2

3

4

4.5

4.

Is the measured waveform of A/C pressure sensor normal?

▶ 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.

▶ 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.

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