EVAP System Leak Monitor
This monitor applies to DTCs P0442, P0451, P0452, P0453 and P0455. Following conditions must be met during test:
- Engine coolant temperature must be 113°F (45°C) or less.
- Engine must be turned off before test driving vehicle.
- Ambient temperature is 41-113°F (5-45°C).
- Selector lever is in "D" range.
This one trip monitor, takes about 8 minutes to complete. Remove all test equipment (except scan tool) from vehicle and install all components and connectors that were removed or disconnected during testing. Select throttle opening angle data. Find a flat surface (no hills) to run monitor. To run monitor, use illustration and perform following steps. See Fig 1. Step numbers in procedure will correspond to step numbers in illustration.
- Ensure engine coolant temperature and ambient temperature are as specified above and engine is off.
- Start engine and accelerate to 55-60 MPH.
- Travel for 3.5 minutes or more while keeping speed at 55-60 MPH.
- While keeping accelerator pedal opening degree constant, keep vehicle speed at 55-60 MPH for 2.5 minutes or more.
- Stop vehicle and turn ignition off.