Fuel Tank Pressure Sensor Inspection
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.
- Ignition switch is turned "OFF" without engine running.
- Disconnect hose connecting FTPS to the Fuel Tank.
- Using a vacuum pump, apply vacuum to the hose connecting to FTPS.
- Measure FTPS output voltage between signal terminal of the FTPS harness connector and chassis ground.
Specification: Voltage increases proportionally with decreasing pressure
Pressure (kPa) Output Voltage (V) 6.666 4.5 0 2.5 -6.666 0.5 - Is voltage within the specification?
YES
- Check for cracks or damage in hose connecting canister and fuel pump. Repair or replace as necessary. - Check for open or short in FTPS harness. Repair as necessary. If it is okay, test with a new FTPS and check for proper operation. If problem is corrected, replace FTPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.