Fuel Tank Pressure Sensor Component Test – Tiburon L4-18L (1997) Powertrain Management
HARNESS INSPECTION PROCEDURES
Check to look that fuel level is over 15%. If not, this inspection is not accurate.
The vehicle must running and at idle. (This is important.)
1. Prepare a voltmeter and connect it to FTP pins as shown.
2. After 20 min. idling, inspect the voltage.
System voltage: 5V
At accelerate: Max. 4.5 V, Min. 0.5 V
3. At idle, inspect that voltage fluctuates up to accelerate rpm up and down.
NOTE:
If voltage is not within spec. as procedures, there is leakage. Inspect the fuel tank and hoses toward canister and fuel neck. Repair or replace
defective parts.