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Fuel Tank Pressure Sensor: Testing and Inspection

FUEL TANK PRESSURE SENSOR INSPECTION

NOTE:
- Perform the following test only when detected.

1. Inspect the fuel tank pressure sensor for damage and cracks.
2. Vacuum hose improper routing kinks or leaks.
3. If correct the above inspect, inspect as follows:

Open circuit
- Fuel tank pressure sensor connector terminal A and PCM connector 2A through common connector.
- Reference voltage circuit (Fuel tank pressure sensor connector terminal C and PCM connector terminal 21 through common connector.)




- Ground circuit (Fuel tank pressure sensor connector terminal B and PCM connector terminal 3F through common connector.)

Short circuit
- Fuel tank pressure sensor connector terminal A and PCM connector terminal 2A through common connector to ground.
- Fuel tank pressure sensor connector terminal C and PCM connector terminal 21 through common connector to ground.

4. Reconnect the fuel tank pressure sensor connector.
5. If correct the above open or short circuit, replace fuel tank pressure sensor.

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