Fuel Tank Pressure Sensor Inspection
- Ignition "ON" & Engine "OFF".
- Disconnect the hose connecting fuel pump and FTPS.
- Install vacuum pump in the hose at fuel pump side.
- Apply vacuum pressure 3.75 cmHg (50 hPa) and 1.50 cmHg (20 hPa), and measure FTPS output voltage.
Specification : Voltage value will vary depending on variation in vacuum pressure
- Is voltage within the 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 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 OK, test with a new FTPS and check for proper operation. If problem is corrected, replace FTPS and go to VERIFICATION OF VEHICLE REPAIR procedure