Check A/C Pressure Sensor
- Ignition switch is turned "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:
Pressure (KPa) 101.4 390.9 1723.7 3031.6 3206.1 Voltage (V) 0.5 0.87 2.57 4.24 4.46 - Is the measured waveform of A/C pressure sensor normal?
YES
- Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM 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.