Fuel Tank Pressure Sensor: Testing and Inspection

FUEL TANK PRESSURE SENSOR




DESCRIPTION
The Fuel Tank Pressure Sensor (FTPS) IS an integral part of the evaporative monitoring system. The ECM monitors the FTPS signal to detect vacuum decay and excess vacuum. The FTPS measures the difference between the air pressure Inside the fuel tank and outside air pressure to Check the purge control solenoid valve operation and for leak detection in the evaporative emission control system by monitoring pressure and vacuum levels in the fuel tank during the purge control solenoid valve operating cycles.

Circuit Diagram:

CIRCUIT DIAGRAM

SIGNAL WAVEFORM

HARNESS INSPECTION
Refer to DTC P0451, P0452, P0453 and P0454 troubleshooting procedures.