Function Explanation (DTC Detection Outline)
WARNING: This page is about a different variant/trim than selected.
- The PCM closes the purge solenoid valve and CV solenoid valve while the vehicle is being driven and seals the fuel tank. Then, the evaporative gas in the fuel tank is inducted into the intake manifold and the pressure in the fuel tank is decreased by opening the purge solenoid valve, and the pressure change of the fuel tank is measured using the fuel tank pressure sensor. If the pressure in the fuel tank decreases below the target negative pressure for the specified period from the pressure measurement, the PCM determines that abnormal negative pressure in the fuel tank is being generated and stores a DTC.
PCM COMPONENT OPERATIONS
| Component No. | Refer to |
|---|---|
| 1 | Purge solenoid valve drive signal |
| 2 | CV solenoid valve drive signal |
| 3 | On (open) |
| 4 | Off (close) |
| 5 | On (close) |
| 6 | Off (open) |
| 7 | Barometric pressure |
| 8 | Target pressure |
| 9 | In fuel tank |
| 10 | Pressure measurement begins |
| 11 | Sealed |
| 12 | Vacuum |
| 13 | Malfunction determination time |
| 14 | P0496-00: recorded |
| 15 | Vacuum maintained |
| 16 | Normal |
| 17 | Malfunction |
| 18 | Time |