Check A/C Pressure Transducer
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
- Connect GDS and select Oscilloscope menu.
- Connect probe to signal line below:
Channel A (+): A/C Pressure Transducer signal line, (-): Ground
- After warming up, Check signal with A/C working.
Specification:
A: Approx. 1.3~1.5V (At Idle & A/C OFF)
B: Above 1.5V (At Idle & A/C ON)
- Is waveform within specification?
YES
- Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check A/C pressure sensor for contamination, deterioration, or damage. 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 then go to "VERIFICATION OF VEHICLE REPAIR " procedure.