Fuel Tank Pressure Sensor Inspection

WARNING: This page is about a different variant/trim than selected.

IG "ON" & Engine "OFF".
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)
-6.67	0.5
0	2.5
6.67	4.5

Is voltage within the specification?
YES
- Check for poor connection between ECM 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.