Detection Condition

PCM measures the fuel tank pressure (FTP2), which is the vacuum when a specified period has passed after EVAP system is sealed. PCM determines the pressure difference between FTP1 and FTP2. If pressure differential exceeds the threshold, PCM determines that the EVAP system has a small leak. this monitor can activate when the PCM determines that the Constantly Leak Detected test results are passed. Monitoring conditions are; Fuel tank pressure (FTP1 and FTP2) -2.65 kPa.