Check A/C Pressure Sensor
- IG "OFF". Connect the GDS.
- Connect the probe to A/C pressure sensor signal and select the oscilloscope in the menu.
- Check the waveform while turning A/C switch "ON" and "OFF" with engine running "ON" and "OFF".
Specification:
A/C PRESSURE SENSOR SPECIFICATIONSVoltage (V) 0.5 1.5 2.5 3.5 4.5 Pressure (KPa) 101.4 885.2 1669.9 2454.5 3239.1 Pressure (psi) 14.7 128.4 242.2 356 469.8 - 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.