Fuel Tank Pressure Sensor: Testing and Inspection

FUEL TANK PRESSURE (FTP) SENSOR INSPECTION

NOTE: Perform the following test only when directed.

1. Inspect the FTP sensor for damage and cracks.
2. Inspect the vacuum hose for improper routing, kinks or leaks.
- If the above are okay, perform the "Circuit Open/Short Inspection".

3. Reconnect the FTP sensor connector.
- If the above open or short circuit are correct, replace FTP sensor.

Circuit Open/Short Inspection




Open circuit
- If there is no continuity, the circuit is open. Repair or replace the harness.
- FTP sensor connector terminal A and PCM connector 4AB through common connector.
- Reference voltage circuit (FTP sensor connector terminal C and PCM connector terminal 4L through common connector.)
- GND circuit (FTP sensor connector terminal B and PCM connector terminal 40 through common connector.)

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the harness.
- FTP sensor connector terminal A and PCM connector terminal 4AB through common connector to GND.
- FTP sensor connector terminal C and PCM connector terminal 4L through common connector to GND.